There is no single best ASO tool for everyone. The right choice depends on your budget, whether you are iOS-only or also on Google Play, and how deep you want to go into competitor research, market intelligence, reviews, Apple Ads, and reporting.
If you are an indie iOS developer or a small business building apps, our pick is Astro. It is simple to start with, the pricing is excellent, updates ship frequently, and the new MCP server makes it interesting for AI-assisted keyword research workflows.
This comparison is based on official pricing and product pages checked in 2026. Pricing changes often, so treat this as a snapshot and check each tool before buying.
Quick answer
If you want the short version:
- Best for indie developers and small businesses: Astro
- Best all-around ASO + analytics tool: Appfigures
- Best for larger ASO teams: AppTweak
- Best if you also care about Apple Ads: MobileAction or SplitMetrics Acquire
- Best for store listing workflows and review management: App Radar by SplitMetrics
For most people reading this site, Astro is the best starting point. It does not try to be everything. It helps you find keywords, track rankings, inspect competitors, and move faster without paying hundreds per month.
Astro ASO keyword research dashboard
Top ASO tools compared
Here is the practical comparison. I am focusing on tools that are common in ASO, keyword research, app intelligence, or Apple Ads workflows.
| Tool | Starting price | Best for | Main tradeoff |
|---|---|---|---|
| Astro | $108/year ($9/mo equivalent) | Small iOS teams and indie developers | Mac/iOS-focused, not a broad enterprise suite |
| Appfigures | $44.99/mo Monitor, $149.99/mo Optimize (monthly billing) | ASO + analytics + app intelligence | Gets expensive when you need deeper ASO/intelligence features |
| AppTweak | $79/mo Essential | Serious ASO teams and agencies | More platform than many small app teams need |
| MobileAction | $15/mo Lite, $69/mo Basic, $239/mo Pro | ASO + Apple Ads + paid keyword intelligence | Feature set can be heavier than needed for simple ASO |
| App Radar by SplitMetrics | €69/mo Essentials | Store listing workflows, reviews, multi-app teams | Less affordable than Astro or basic keyword trackers |
| Asodesk | Official page shows ASO plans from about $47/mo under annual/offer pricing | ASO, reviews, analytics, competitor research | Pricing page is harder to compare cleanly |
| SplitMetrics Acquire | Custom pricing | Apple Ads automation, ASO, A/B testing, growth teams | Best fit for paid acquisition teams, not basic keyword research |
The big takeaway: top ASO tools are not interchangeable. Some are keyword research tools, some are analytics platforms, some are store listing workflow tools, and some are Apple Ads systems with ASO features attached.
One naming note: App Radar is now App Radar by SplitMetrics. SplitMetrics acquired App Radar, but the products are still easiest to think about separately: App Radar is the ASO/store listing product, while SplitMetrics Acquire is focused on Apple Ads and paid acquisition workflows.
How to choose an ASO tool
Before comparing pricing, decide what job you actually need the tool to do.
For most indie developers and small businesses, the essentials are:
- Keyword popularity and difficulty
- Keyword rank tracking
- Competitor keyword discovery
- App Store country support
- A workflow that is fast enough to use regularly
For growth teams, the list gets longer:
- Download and revenue estimates
- Competitor benchmarks
- Review management
- Store listing workflows
- Apple Ads data
- Reports, alerts, APIs, and team seats
The mistake is buying the biggest tool because it looks more serious. If you are still validating small app ideas, speed and clarity matter more than enterprise dashboards.
Astro
Astro is our pick for indie iOS developers and small businesses.
It costs $108/year, shown as $9/month billed annually. Astro says the plan includes unlimited keyword tracking, popularity and difficulty data, keyword suggestions, complete rankings/charts, ratings analysis, competitor keyword extraction, keyword translations, and support for more than 60 countries.
What makes Astro stand out:
- Simple pricing: One annual subscription, no complicated plan matrix.
- Good beginner experience: You can start researching without learning a giant platform.
- Strong value: $108/year is much easier to justify than $79-$299/month tools when you are testing small apps.
- MCP server: Astro now has a built-in MCP server in beta, which can expose local Astro data to AI assistants like Claude, Cursor, and VS Code Copilot.
- Frequent updates: The release notes show active product work, including MCP additions and fixes in 2026.
The MCP part is genuinely interesting. It means you can start asking an AI assistant to inspect rankings, compare keyword movement, or help automate parts of keyword research around your Astro data.
The tradeoff: Astro is not trying to be a broad enterprise suite. If you need Android-heavy workflows, enterprise reporting, paid acquisition intelligence, or large-team permissions, you may outgrow it.
Astro ASO keyword research
Appfigures
Appfigures is a strong all-around option if you want ASO, analytics, app intelligence, reviews, and market data in one place.
For ASO, the relevant public plans are:
- Monitor: $44.99/month monthly, or $35.99/month on annual billing. Includes 100 keywords and daily keyword rank updates.
- Optimize: $149.99/month monthly, or $119.99/month on annual billing. Includes 500 keywords, competitor keyword tracking, real-time keyword analysis, smart keyword suggestions, and hourly rank updates.
- Boost/Grow: Higher tiers add more keywords, premium competitors, download/revenue estimates, Apple Ads Intelligence, and broader market features.
This is probably the better pick if you want to validate whether competitors are actually making money, inspect broader market data, and keep performance analytics in the same product.
Appfigures Keyword Inspector
AppTweak
AppTweak is one of the most established ASO platforms. It is better suited to teams that want a fuller ASO suite: keyword research, competitor analysis, reporting, market intelligence, review management, and API options.
Public pricing starts at:
- Essential: $79/month
- Grow: $299/month
- Grow Plus: $549/month
- Enterprise: custom
AppTweak is probably not the first tool I would buy for one small iOS app. It makes more sense once ASO is a repeatable channel and you need more structure, reporting, and team workflows.
AppTweak ASO dashboard
MobileAction
MobileAction is useful if you want ASO and Apple Ads intelligence closer together.
Its public ASO Intelligence plans are:
- Lite: $15/month monthly, or $12.50/month billed yearly. Includes 100 keywords, 5 apps, 3 competitors per app, and basic ASO tools.
- Basic: $69/month monthly, or $59/month billed yearly. Includes 500 keywords and deeper competitor insights.
- Pro: $239/month monthly, or $199/month billed yearly. Includes 1,500 keywords, more apps, more competitors, paid/organic keyword features, localization performance, and more.
- Enterprise: custom.
The strongest reason to choose MobileAction is that your ASO work is connected to paid keyword and Apple Ads research. If you only need simple iOS keyword research, it can feel like more product than you need.
MobileAction ASO Intelligence
App Radar by SplitMetrics
App Radar by SplitMetrics is more workflow-oriented. It covers keyword research/tracking, app store listing management, review features, competitors, creative trends, and team workflows.
This is the ASO product in the SplitMetrics family. If you see “App Radar by SplitMetrics” on their website, that is the same product we are talking about here.
Public pricing starts at:
- Essentials: €69/month monthly, or €58/month billed annually. Includes 2 apps and 500 keywords.
- Growth: €169/month monthly, or €141/month billed annually. Includes 10 apps, 1,500 keywords, and more workflow/review features.
- Scale: €299/month monthly, or €250/month billed annually. Includes 15 apps and 3,000 keywords.
App Radar by SplitMetrics is worth considering when your ASO work is less about one keyword list and more about managing listings, reviews, localizations, and repeatable workflows.
App Radar by SplitMetrics keyword tracking
Asodesk
Asodesk covers ASO, reviews, analytics, competitor research, store console workflows, top charts, app monitoring, and keyword boosting.
The official pricing page is harder to compare cleanly because it includes different products, offers, monthly/annual views, and add-ons. At the time of research, it showed ASO plan pricing from about $47/month under the annual/offer view, with higher tiers and Enterprise/custom options.
Asodesk is a better fit if you want a broader ASO and review-management suite. For a simple small-business keyword workflow, I would still start with something lighter.
Asodesk keyword auto-suggestions
SplitMetrics Acquire
SplitMetrics Acquire is strongest when ASO sits next to paid acquisition, Apple Ads automation, custom product pages, and mobile A/B testing.
The SplitMetrics Acquire pricing page is structured around products like managing Apple Ads, improving/scaling ASO, running mobile A/B tests, and working with a growth agency. The page does not show a simple public monthly price for the ASO product.
This is a strong option for growth teams with real ad spend. If you want SplitMetrics for ASO listing work specifically, look at App Radar by SplitMetrics instead. SplitMetrics Acquire is probably not the first tool to buy if your immediate question is "which keyword should I put in my app title?"
SplitMetrics Acquire dashboard
Honorable mention: Sensor Tower
Sensor Tower is worth knowing about, but I would not put it in the main ASO tool list for this article.
It is not really an ASO keyword tool for small businesses or indie developers. It is an enterprise intelligence platform for app, web, ad, gaming, and market data. Sensor Tower also does not publish a simple self-serve price on its demo page. It says pricing is customized for each customer.
That said, Sensor Tower can still be useful during ASO research. On the free version, you can check an app's estimated revenue, which helps when combined with keyword research. If a keyword looks easy to rank for, but the top apps appear to make no money, that niche might not be worth building.
Use it as a validation layer, not as your main ASO workflow.
Sensor Tower app analysis
Final pick
So, what is the best ASO tool?
For most indie iOS developers and small businesses, Astro is the best ASO tool to start with.
It is not the biggest platform, but that is the point. It gives you the core ASO workflow at a price that makes sense:
- Find keywords
- Check popularity and difficulty
- Track rankings
- Inspect competitors
- Work across many App Store countries
- Use the MCP server to bring AI into the workflow
If you later need download estimates, revenue estimates, team reporting, Apple Ads intelligence, review management, or enterprise market data, then Appfigures, AppTweak, MobileAction, App Radar by SplitMetrics, Asodesk, SplitMetrics Acquire, or a broader intelligence platform may be a better fit.
But if you are trying to ship small iOS apps, validate niches, and improve organic rankings without spending hundreds every month, start with Astro.
After picking a tool, the next step is learning the process. Read the guide on how to search keywords for app store optimization for the actual workflow.