14 Best ASO Tools for App Store Optimization in 2025

App Store Optimization (ASO) is essentially SEO for apps; it’s the process of improving your app’s visibility in the Apple App Store or Google Play Store and increasing conversion rates so that more people find and install your app.

A well-optimized app store listing means that when users search for an app like yours, they’re more likely to find it, and once they do, they’re more likely to download it. 

ASO drives organic (free) installs continuously, reducing reliance on costly ads. But achieving this optimization is tough without the right tools.

In this article, we’ll explain why ASO tools are essential and break down what they do in terms of keyword research, competitor analysis, and conversion optimization. 

We’ll also guide you on choosing the right tool for your needs and discuss how these tools fit into a broader ASO strategy. If you want more tactics, you can check our app store optimization guide.

Why You Need ASO Tools

ASO tools help improve your app’s visibility, rankings, and downloads by providing data-driven insights and automation. Manually tracking keywords or competitor moves is nearly impossible at scale, good ASO platforms do the heavy lifting for you. 

They enable you to discover high-traffic search terms, track your app’s performance, analyze competitors, and optimize your app listing for maximum conversions. In short, ASO tools amplify your efforts in the key areas of app store optimization.

Keyword Research & Tracking

A solid keyword strategy is the foundation of ASO. The vast majority of users discover new apps through app store search. In fact, around 70% of App Store visitors use search to find new apps, and 65% of downloads occur right after a search. If your app isn’t showing up for relevant searches, you’re missing out on a huge audience. ASO tools make keyword research and tracking much easier and more effective:

• Discovering high-value keywords: Modern ASO tools provide data on search volumes and keyword difficulty, so you can identify terms that many people search for but where competition isn’t too fierce.
• Multi-language support: ASO tools can expand your keyword list across different locales. They help you find and translate keywords for multiple languages, which is crucial if you’re targeting global markets.
• Tracking rankings over time: It’s not enough to pick keywords; you need to monitor how your app ranks for them. ASO platforms automatically track your keyword rankings daily or weekly, often across many countries and devices.

Competitor Analysis

Competitor analysis features in ASO tools let you learn from the market leaders and identify opportunities to outperform them. A good ASO tool can show you exactly which keywords your competitors rank for, how their app store pages look, and even estimates of their downloads or revenue.

• Competitor keyword spying: All of your rivals’ app store metadata is public, and many tools take advantage of this. You can “spy” on competitors’ ASO strategies, see the keywords they rank highly for, track how their rankings change, and find gaps you can exploit.
• Analyzing store listings and assets: Some ASO platforms allow you to peek at competitors’ creative assets and listing changes. You can monitor when competitors update their app title, description, icon, or screenshots. Advanced tools even log historical changes or A/B tests competitors run.
• Market intelligence data: Premium ASO intelligence platforms like data.ai and Sensor Tower provide broad market data such as download and revenue estimates for apps in your category.

Conversion Rate Optimization

Getting users to find your app is step one; getting them to install it is step two. That’s why conversion rate optimization is a core part of ASO. Conversion in this context means the percentage of people who, after viewing your app store page, actually download the app. Even if you have great keywords and visibility, a low conversion rate will choke your growth. ASO tools can help boost conversion through A/B testing and performance analytics.

Recommended Premium ASO Tools

The following tools are top-tier ASO solutions favored by larger teams, agencies, and serious app publishers. These premium platforms come with comprehensive feature sets and correspondingly higher price tags. 

They are ideal for companies that need deep data and are running major ASO campaigns. If you’re a solo developer or small startup on a tight budget, feel free to skip ahead to the affordable tools section.

1. AppTweak

AppTweak is a popular all-in-one ASO platform known for its powerful keyword tools and competitive intelligence. Key features of AppTweak include multi-language keyword research, allowing you to discover keywords in over 100 countries and translate suggestions into any language.  This is great for localization efforts. It also provides robust competitor tracking, you can monitor your competitors’ keywords, rankings, and even see when they run A/B tests or Apple App Store promotional content.

In addition, AppTweak offers creative optimization insights: it can alert you to competitors’ A/B tests on product pages and help visualize different versions they tested. While AppTweak itself doesn’t run your A/B tests, it gives you intelligence on what others are testing, which is extremely useful.

Uniquely, AppTweak has Apple Search Ads integration, so you can connect your Apple Search Ads data and manage or analyze ad performance alongside organic ASO metrics. This integration bridges paid and organic acquisition, letting you see, for example, which keywords are valuable both in search ads and organically.

2. Sensor Tower

Sensor Tower is another industry-leading ASO and app analytics platform, often mentioned in the same breath as App Annie. In fact, as noted, Sensor Tower has merged with data.ai as of 2024, creating a powerhouse company, though Sensor Tower’s own toolset remains available standalone. Sensor Tower’s feature set covers ASO fundamentals like keyword tracking, category rankings, and review analysis, as well as robust advertising intelligence.

A standout feature is its Ad Intelligence module, which lets you see what ads other apps are running, on which networks, and even view the ad creatives. This is incredibly useful if you want to gauge a competitor’s user acquisition strategy beyond organic search.

For ASO specifically, Sensor Tower provides extensive store data trends. You can view historical charts of an app’s rank over time, see share of voice for keywords, and get suggestions for keywords to target. It also has a top charts and category rankings explorer, useful for tracking overall market movers.

Many companies use Sensor Tower to get download and revenue estimates similar to data.ai; these figures help validate the success of ASO or paid campaigns. Sensor Tower is known for data accuracy and has been a go-to for app market researchers.

3. MobileAction

MobileAction is a comprehensive ASO platform that has positioned itself as a slightly more accessible alternative to the top enterprise tools. It offers a wide range of features from keyword research and tracking to market insights and even an ad library.

MobileAction’s focus is on keyword optimization and market insights: you get all the standard ASO tools like keyword suggestions, difficulty scores, competitor keyword analysis, and app performance tracking. Additionally, MobileAction provides features for competitor spying and some market trend data.

One notable aspect is MobileAction’s effort to cater to different user segments through pricing tiers. They have Basic and Pro plans that cover ASO needs for individuals or growing teams. For instance, the ASO Basic plan starts around $69/month and allows tracking ~500 keywords, a few apps, and competitors, which is good for a small team. The Pro plan (around $239/month) expands those limits for larger needs.

4. SplitMetrics

SplitMetrics is a slightly different entry on this list; it’s a specialized platform primarily focusing on conversion rate optimization through A/B testing for app store assets. SplitMetrics made its name as an A/B testing tool for iOS App Store pages even before Apple introduced native A/B testing. It essentially allows you to create live A/B experiments for things like app icons, screenshots, app previews, and even app descriptions or titles.

By directing a portion of real user traffic to different page variants via ads or web redirection, SplitMetrics can determine which variant yields more installs. This is invaluable for optimizing creative elements of your app listing.

Key features of SplitMetrics, specifically their product SplitMetrics Optimize, include the ability to test multiple variations of icons, screenshots, and videos and get statistically significant results on which version converts best. For example, you could test whether a red icon or a blue icon gets more users to download, or whether screenshot set A outperforms set B. 

The platform provides detailed analytics on user behavior during the tests too. This includes how far users scroll in your screenshot gallery or how long they view your video, helping you glean insights on what catches attention. 

SplitMetrics also provides benchmark data and best practices drawn from many experiments, so you have some guidance on what usually works. For instance, maybe showing an in-app screenshot with a human face in it tends to increase conversion.

Beyond A/B testing, SplitMetrics has expanded to a suite that includes Apple Search Ads automation and recently acquired App Radar (another ASO tool). But at its core, if you see the name SplitMetrics, think conversion optimization. It’s particularly popular among iOS marketers and game publishers who rely on razor-sharp conversion improvements to lower their cost per install.

Affordable ASO Tools for Indie Developers

Not everyone has a big budget for ASO. Fortunately, there are several cost-effective tools tailored to indie developers and small studios. These options come at a fraction of the cost of enterprise platforms; some are even free, while still providing very useful ASO capabilities. 

If you’re a solo app creator or a small team looking to improve ASO without spending much, the tools below are for you.

5. AppVector.io

AppVector is an affordable ASO platform that offers a lot of bang for the buck. It’s designed to let you monitor your app’s performance and keyword rankings and compare against competitors, all in one simple interface. The standout feature of AppVector is its pricing; they introduced a Lite plan for just $9 per month, aimed squarely at indie developers.

This $9/mo plan allows you to track around 50 keywords and includes multiple features of the platform. Higher-tier plans with more keywords and apps are also available at higher costs, but even those are reasonably priced relative to big ASO tools.

Despite the low price, AppVector provides competitor monitoring and robust keyword tracking with historical data. AppVector is a great choice for developers who want an entry-level ASO tool that’s easy on the wallet. For example, if you have one or two apps and just want to ensure you’re tracking your keywords and not missing any opportunities your competitors are using, AppVector can do that without requiring a large investment.

6. GrowASO.com

GrowASO offers one of the cheapest ASO solutions on the market. GrowASO’s basic plan costs only $39 per year and this plan allows for unlimited keyword tracking and research. The philosophy here is “no frills, just results.” GrowASO provides a toolset for tracking your app’s keyword rankings and researching new keywords, without a lot of flashy extras. The interface is minimalist, and it focuses on core functions like rank tracking across different countries, keyword suggestion lists, and basic competitor rank comparisons.

Because of its ultra-low price, GrowASO is extremely appealing for hobby developers or anyone for whom even $10/month is a stretch. At roughly $3.25 per month, it’s almost a no-brainer to give it a try if you need to keep tabs on keywords. One user mentioned that GrowASO’s basic offering is “unlimited keyword rank tracking and research,” and even their premium plan is under $10/month. That indicates even the top tier is affordable.

Of course, at such a low price, expect a simpler experience. GrowASO may not have advanced features like fancy visualizations, competitor download estimates, or API integrations. It’s likely a small operation focusing on one thing: let you track and find keywords cheaply. This is perfectly fine for many indies. If you just want to make sure you’re not missing important keywords and see how you’re ranking over time, GrowASO can handle that.

GrowASO best suits indie developers on a shoestring budget or perhaps students/learners who want to experiment with ASO. It’s also useful as an add-on tool; if you mainly use a free tool but that free tier limits keywords, you could supplement with GrowASO to track more keywords.

7. AstroASO

Astro, found at TryAstro.app, is an ASO tool built specifically for Apple’s App Store (iOS) and comes as a native macOS application. It has gained popularity among indie iOS developers for its simple yet powerful approach to ASO. Astro provides everything you need to make your app more visible on the App Store, without the bloat that some larger tools have.

Key features of Astro include unlimited keyword tracking. It pulls keyword popularity data directly from Apple Search Ads and calculates difficulty scores to help you pick the right keywords.

Astro also automatically finds which keywords your app is ranking for and can show you your competitors’ keywords as well. It supports over 60 App Store locales, and even integrates with the DeepL translation API so you can hover on any foreign keyword and see the English translation instantly

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One of Astro’s philosophies is “no limits, no extra fees.” It’s sold as a fixed-price annual subscription. The cost is $108 per year for a single Mac license, which works out to just $9 per month.

8. ASO.dev

ASO.dev is an all-in-one ASO platform that packs a surprising number of features geared toward iOS developers. The tool offers multi-language support and real-time tips for optimizing your App Store presence. 

With ASO.dev, you can do things like bulk-edit and localize metadata, manage your keyword lists across dozens of locales, and even handle pricing and in-app purchase configurations. Tasks that usually require tedious work in App Store Connect are made easier here.

With such breadth, ASO.dev can sound like an enterprise tool, but it’s actually marketed to indie developers and small companies as well. The pricing reportedly starts around $18/month for basic plans, making it relatively affordable. 

9. Asolytics.pro

Asolytics is an AI-powered ASO platform that provides a suite of tools for both App Store and Google Play optimization. It’s a bit newer on the scene but offers a professional set of features at competitive prices. Asolytics emphasizes keyword research, competitor insights, and a built-in metadata editor,  basically covering the main workflow of ASO from discovery to implementation. 

For example, it has an AI-driven “Collect Semantic Core” feature where their algorithms help you quickly gather the best relevant keywords for your app. It can suggest effective keywords in your niche by analyzing app performance and even find related terms you might not have thought of.

Asolytics is relatively affordable compared to big players, though pricier than the indie-only tools. Their plans start at $59/month and allow a few apps and up to 5000 keywords, based on the snippet around that price. The next tier is Pro at $199/month for agencies or larger outfits needing more apps and keywords. 

10. ASO Studio

ASO Studio is a tool and service combo that emerged from experienced ASO consultants. It’s both an ASO toolset and a managed service (they offer to do ASO for you), but here we’ll focus on the tool features that indie users can utilize themselves. ASO Studio’s platform is notable for a few things: multi-language keyword management, review reply automation, and price localization support.

The tool offers a 14-day free trial, but pricing details are not publicly obvious. Given the unique features, it might have a subscription in a moderate range. The company also offers managed ASO services, but the self-service tool is what indie devs would use if going solo.

ASO Studio is best for developers or small companies that are launching apps in multiple countries and need an efficient way to manage it all. 

11. ASOSuite.com

ASOSuite is a minimalist ASO tool that focuses on the core need of rank tracking at an affordable cost. True to its name, it offers a suite of basic features to boost your downloads and revenue by analyzing your app’s performance on the store. However, it keeps things simple and easy to use, without a lot of extraneous features.

The primary function of ASOSuite is as a keyword ranking tracker. You input the keywords you care about and the tool will regularly check how your app ranks for those keywords in the app stores.

One very appealing aspect is that ASOSuite offers a free tier for up to 20 keywords. That means you can track 20 keywords at no cost, which might be enough for a single small app’s main keywords. For many indies, that free allotment covers the basics. If you need to track more keywords or more apps, ASOSuite likely has a paid plan that allows a higher limit, and that plan is designed to be budget-friendly.

12. Komori

Kōmori is a unique entry in the ASO tools space built for iOS developers, available as a macOS app. Komori is particularly attractive because it’s designed to demystify ASO for those who aren’t experts, focusing on the features that really matter without the clutter.

Komori’s features cover the key ASO areas an indie dev needs: it helps you find the right keywords, spy on competitors’ ASO strategies, and track your app’s performance in real time. Specifically, it will suggest keywords that could help your app rise in the ranks, including showing you metrics like search volume and difficulty for each.

If you want the full functionality, the paid options are very indie-friendly: roughly $8.99/month or $74.99/year, and even a one-time lifetime purchase option around $189. Considering that many other tools charge that monthly, Komori is a great deal.

14. AppFollow.io

AppFollow is a well-established ASO and app management platform that offers a mix of free and paid features, making it quite attractive to indie developers. It’s like a multi-tool: it does keyword tracking, monitors app reviews, tracks updates, and integrates with various team collaboration tools.

One of the biggest perks is that AppFollow has a free plan that’s quite generous. On the free tier, you can track two apps and up to 1000 keywords for all countries combined.

You can also invite up to 5 team members to collaborate on that free account. With AppFollow’s free plan, you not only track keywords, but you can also set up integrations to Slack, Discord, email, etc., to get your app’s reviews and updates delivered to you.

Beyond the free plan, AppFollow offers paid plans like Starter, Pro, etc. The paid plans start around the $100+ per month range.

Choosing the Right App Store Optimization Tool

We’ve covered many tools,  from the priciest enterprise platforms to the scrappy indie-friendly apps. How do you decide which ASO tool is right for you? The choice will ultimately depend on your specific situation: your budget, your focus/goals, and any additional features you might need beyond plain ASO. Below are some guidelines to help you pick the optimal tool for your needs.

Choosing based on budget

Your budget is often the quickest filter. ASO tools range from free to thousands of dollars per month, so let’s break it down:

• $0 to $20 per month: You’ll be looking at free tools or ultra-cheap options. Great picks here include AppFollow’s free plan, ASOSuite, and free features of Komori or Astro. If you can spare up to $10 or $20, consider Astro ($9/mo effective) or AppVector Lite ($9/mo) for more robust tracking on a shoestring.
• Around $20 to $100 per month: In this range, you can afford one of the dedicated indie tools or a basic plan of a larger tool. ASO.dev starts at ~$18/mo for a comprehensive iOS solution, GrowASO at ~$3/mo is almost negligible cost for unlimited keywords, and Komori at ~$8.99/mo is a solid all-arounder for iOS.
• $100 to $500 per month (Growing company budget): This opens up higher tiers of MobileAction, AppFollow, Asolytics, or even AppTweak’s entry plan ($79/mo). In this bracket, you should expect strong data and perhaps cross-team usage where product, marketing, and devs all benefit.
• Enterprise budget (>$500/mo up to thousands): You have the luxury to consider the premium intelligence platforms like Sensor Tower, data.ai (App Annie), or a full AppTweak Scale plan. These will give you the richest data and services. Only go this route if you truly need the advanced market data and have multiple apps or a large marketing push where such insight yields ROI. 

Choosing based on focus

What aspect of ASO is most critical to you? Different tools specialize in different areas of optimization. Choose a tool that aligns with your primary ASO goals:

• If keyword research and tracking are your main focus: Look at tools known for keyword prowess. AppTweak is excellent for extensive keyword research and competitive keyword tracking. MobileAction and Asolytics also offer strong keyword tracking with plenty of suggestions and difficulty metrics. For a budget option with a keyword focus, Astro or Komori are tailored for finding and tracking keywords effectively with iOS.

• If competitor analysis is your priority: You’ll want tools that provide competitive insights beyond just keyword overlap. Sensor Tower and data.ai are top-tier for broad competitor intelligence. If those are out of reach, MobileAction gives competitor keyword tracking and an ad intelligence feature to see competitors’ ads. ASO.dev and Asolytics allow you to spy on competitor keywords and metadata changes quite well too. Also, Komori explicitly highlights competitor spying in a simple way.

• If conversion rate optimization (CRO) is your focus: If you believe your main gains will come from improving your app page’s conversion, you need tools for A/B testing and creative optimization. SplitMetrics is the specialist here; it’s all about A/B testing icons, screenshots, etc., to scientifically boost conversion. SplitMetrics or alternatives like Storemaven or even Google Play’s built-in experiments should be on your radar.

• If ratings & user sentiment are a focus: Perhaps your strategy is to improve star ratings and leverage user feedback as part of ASO. In that case, AppFollow or ASO Studio are excellent because they facilitate review monitoring and replying. AppFollow can aggregate and even auto-translate reviews for you to respond; ASO Studio takes it further with reply-in-your-language auto translation features.

• If Apple Search Ads integration is a focus: Some apps like to unify their organic and paid search strategy. If that’s you, consider AppTweak, SplitMetrics Acquire, or MobileAction, which offers Apple Search Ads intelligence and even an Apple Ads training/certification module. Having ASA data in your ASO tool can help you pick keywords that are effective in paid and organic both.

Know that you can also mix and match. For example, you might use AppTweak for keywords + competitor analysis, but also use SplitMetrics for CRO experiments. Or use a free AppFollow for reviews alongside Astro for keyword tracking. It’s common for ASO practitioners to use multiple tools to cover all bases, selecting each for its strength.

Choosing based on additional features

Beyond the core ASO features, sometimes a tool offers that one extra thing that can make your life easier. Consider any additional needs you have:

• Team collaboration and reporting: If you have a team that needs to share ASO data or you need to report up to management, look at tools with good reporting dashboards or export features. AppTweak has a “Reporting Studio” where you can build custom dashboards and reports combining ASO data with analytic. AppFollow allows multiple team members and Slack integration on its free plan, which is great for collaboration.
  
• API Access and Automation: Are you a data nerd who wants to pull ASO metrics into your own system or automate queries? Many premium tools offer APIs. Sensor Tower, data.ai, AppTweak, AppFollow all have API access. If you want to incorporate ASO data into your own app or internal dashboard, ensure the tool provides an API or at least CSV export.
  
• Integrated app management features: Tools like ASO.dev go beyond ASO into things like managing in-app purchases and subscriptions and uploading screenshots in bulk. If you find App Store Connect a chore, an ASO tool that also streamlines those tasks could kill two birds with one stone. ‍
• Localization support: If you have apps in many languages, lean towards tools that specialize in localization. ASO Studio and ASO.dev both have strong localization features. AppTweak and AppFollow also support multiple languages for keywords. But some simpler tools might only focus on one store or one language at a time. Make sure the tool aligns with your localization needs.‍
• Customer support and learning resources: If you’re newer to ASO, you might want a tool that comes with good customer support, an academy, or lots of guides. For example, AppTweak and Asolytics have ASO academies/blogs. AppFollow has webinars and documentation.

Beyond Tools — The Full ASO Strategy

While tools are incredibly helpful, it’s important to remember that tools alone don’t guarantee success. The best results come when you combine the insights from tools with a solid understanding of your market and a willingness to iterate.

Think of ASO tools as your assistants, but you still need to be the strategist. A tool can tell you what keywords are trending or what your conversion rate is, but you must decide how to act on that information. For example, an ASO tool might reveal that a competitor’s new screenshots are really resonating with users;  it’s then on you to consider updating your own creatives or risk falling behind.

Also, consider the limitations of ASO in the bigger picture. One experienced developer pointed out that after you’ve optimized all your keywords (the “low-hanging fruit”), everyone in your niche might have done the same, and you reach a point of diminishing returns.

What comes next? It becomes crucial to shift focus to conversion rate optimization and other channels. In other words, ASO is one pillar of a larger growth strategy. Beyond tools and keyword tweaks, remember to:

• Build a great product: User retention, ratings, and word-of-mouth are influenced by how good your app is. No ASO hack substitutes for a quality app that people find valuable.
  
• Encourage happy users to leave reviews: This boosts your rating, which in turn improves ASO conversion. Maybe integrate a smart review prompt in your app.
  
• Keep an eye on analytics: Monitor not just the ASO metrics but also your in-app analytics. Are the users you’re acquiring via organic search sticking around? If not, maybe you’re attracting the wrong audience or the app needs improvement.
  
• Leverage other marketing efforts: Social media, content marketing, cross-promotion, etc., can all funnel users to your app listing. And as App Store algorithms have evolved, strong engagement metrics can actually improve your search rankings.

Final Thoughts

App Store Optimization in 2025 is both an art and a science. We have an impressive array of ASO tools at our disposal,  from enterprise-grade platforms that provide a 360° view of the app market to nimble, affordable apps made by indie devs for indie devs. The “best” ASO tool ultimately depends on your needs: your budget, your platform (iOS/Android), the size of your app portfolio, and what part of ASO you’re focusing on.

If you’re a solo developer or small startup, rest assured you don’t need to spend a fortune to do effective ASO. You can start with free or low-cost tools like AppFollow, AppVector, or Komori to cover the basics. 

Remember, the tool is only as good as how you use it. Continuously test, learn, and iterate. Finally, integrate your ASO work with your overall app growth strategy. The tools and tactics discussed here are meant to empower you. Choose the right tools for your situation, apply the best practices, and don’t be afraid to experiment. For further reading, you can check out our guide on the best mobile app marketing strategies or our top user acquisition strategies for mobile apps article.