Free ASO Tool for iOS
Score any App Store keyword in seconds.
The free ASO research tool indie iOS devs use to find winnable keywords, grade their listing, and watch their rankings. $9.99 one-time unlock — no subscription, ever.
★ Top 3 in App Store for "ASO tool" No account required iPhone & iPad
Every Tool You Need
Research smarter at every stage.
From initial keyword discovery to grading your listing and finding competitor gaps — all in one place.
Find winnable keywords, faster.
The latest release is faster across the board and pings you the moment a tracked keyword moves — on top of winnable suggestions, instant setup, and competitor intelligence.
New
Get pinged when your rank moves
Keyword Scout now refreshes your tracked rankings in the background and notifies you the moment a keyword moves — up or down — so you know your metadata is working without opening the app to check.
Improved
Faster, top to bottom
Keyword research, app reports, ranking checks, and market research all come back noticeably quicker — and the waits you'd hit when Apple rate-limited the app are essentially gone.
New
Suggestions you can actually win
Long-tail keyword ideas are scored the moment you open the app and sorted so the winnable ones come first — no more tapping into a wall of "avoid" terms.
New
Set up your app in seconds
Track your app and Keyword Scout pulls in your keywords, competitors, and a listing grade automatically — a populated workspace with zero manual setup.
New
Find my competitors
Automatically discover the apps fighting for your keywords, then see exactly where their grip is weak and which terms they forgot to defend.
New
Keyword competitiveness in the grader
The Listing Grader now shows how winnable your chosen keywords are right alongside your structure score — so a good grade never hides a tough keyword set.
New
Add any app, any country
Apps published in a single country's App Store now load correctly — just paste the App Store link or search by name, wherever in the world it's live.
Improved
A daily market Pulse
Pulse now refreshes once a day in the background — open it to a fresh read on your category, competitor moves, and trending terms with no manual refresh.
Features
Everything you need to find the right keywords.
No guesswork. No subscriptions. Just data.
🔍
Instant Keyword Search
Search any keyword and instantly see a difficulty score, saturation rating, and the top ranking apps. Know if a keyword is worth your time before committing to it.
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Bulk Search Pro
Paste up to 20 keywords at once with character counts shown inline. Compare scores side by side and cut the losers fast — no searching one by one.
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175+ Country Markets Pro
Compare keyword competition across every App Store market. Find where your keyword has an opening and see the highest and lowest competition countries at a glance.
✨
AI-Optimized ASO Pro
Generate an AI-optimized title, subtitle, and keyword field built around your best keywords. Pro-only — unlock once and generate as many times as you need.
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Listing Grader
Paste your app name, subtitle, and keywords and get a scored audit — title, subtitle, and keyword field graded separately. 1 free grade, unlimited with Pro.
🎯
Competitor Intelligence Pro
See what users complain about in competing apps. Surfaces recurring pain points, unresolved gaps, and a coverage matrix — so you can position your app where competitors fall short.
💬
AI Review Responses Pro
Draft replies to your App Store reviews with one tap. See the review, tap generate, and get a professional response ready to copy — no blank-page paralysis.
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Keyword Suggestions
Get related keyword ideas with difficulty and saturation scores alongside every search. Free users get a preview — Pro unlocks the full list.
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App Tracker
Add your apps and check keyword rankings. Free users track 1 app and see the current rank. Pro users get full ranking history with trend charts, sparklines, and unlimited apps.
🔔
Ranking Alerts Pro
Get notified when a keyword ranking shifts significantly. Stay on top of movement without having to check manually every day.
🔗
Compound Keyword Analyzer Pro
Apple automatically combines words across your title, subtitle, and keyword field. Discover which compound search terms you're indexed for — and which ones you're one word away from unlocking.
📈
Explore Trending Keywords
Browse trending keywords across Productivity, Health, Games, Finance, and more. Filter to your category and spot opportunities — terms gaining momentum that aren't yet locked up by major apps.
Built for iPad Too
Full-screen power on any device.
Keyword Scout is optimized for iPad — spread out your research with a larger canvas and multi-column layouts designed for bigger screens.
Pricing
Free to start. One-time to unlock everything.
No subscription. No account required. Pay once, use forever.
💡
Tools like Sensor Tower, AppFollow, and AppTweak charge $50–$500 per month for ASO data. Keyword Scout gives you the same core intelligence for $9.99 once — or nothing at all if you stay on Free.
Free
$0
Always free, no account needed
- ✓ 10 keyword searches per day
- ✓ Top 3 ranking apps per keyword
- ✓ Related keyword suggestions (preview)
- ✓ US market comparison (4 markets shown)
- ✓ Explore trending keywords — all categories
- ✓ Track 1 app — current ranking only
- ✓ 1 free listing grade
Best Value
Pro
$9.99 one-time
Pay once, everything unlocked forever
- ✓ Everything in Free, plus:
- ✓ Unlimited keyword searches
- ✓ Bulk search — up to 20 keywords at once
- ✓ All 10 ranking apps per keyword
- ✓ Market comparison across 175+ countries
- ✓ AI-optimized title, subtitle & keywords
- ✓ Unlimited listing grades
- ✓ Competitor intelligence & pain point analysis
- ✓ AI review response generator
- ✓ Track unlimited apps with ranking history & charts
- ✓ Compound keyword analyzer & unlock suggestions
- ✓ Concept app research mode
Comparison
How Keyword Scout compares.
A native, one-time alternative to the subscription ASO tools — built for indie iOS developers, not enterprise marketing teams.
| Keyword Scout | Typical ASO tools (AppTweak, Sensor Tower, AppFollow…) |
|
|---|---|---|
| Price | One-time $9.99 — or free forever | $24–$100+ / month |
| Platform | Native iPhone & iPad | Web or Mac dashboard |
| Account | None — no sign-up, no email | Required |
| Your data | Stays on your device | Stored on their servers |
| Built for | Indie iOS developers | Enterprise marketing teams |
| Difficulty & saturation scoring | Instant, on every search | Yes (paid tiers) |
| 175+ country markets | Included with Pro | Higher-tier plans |
Looking for a free AppTweak or Sensor Tower alternative without a monthly subscription? Keyword Scout covers the core ASO research workflow — keyword scoring, competitor analysis, and listing grading — for a one-time price, right on your phone.
FAQ
Common questions.
Short answers. If yours isn't here, the privacy section below probably covers it — or tap the App Store link to read more.
What is Keyword Scout?
Keyword Scout is a native iOS app for App Store keyword research and ASO. Type any keyword and get a difficulty and saturation score in seconds, see the apps competing for it, grade your own listing, and watch how your rankings change over time. Built for indie iOS developers.
How much does Keyword Scout cost?
Free to download and use. Pro features unlock with a one-time $9.99 purchase — no subscription, no recurring fees. Free tier includes 5 keyword searches per day; Pro is unlimited and adds bulk keyword scoring, 175-country market comparison, listing optimizer, and competitor intelligence.
Is Keyword Scout a free ASO tool?
Yes. The core keyword research is free — score any App Store keyword for difficulty and saturation, see top competitors, and read related keyword suggestions, all without paying. Free tier is rate-limited to 5 searches per day. Pro removes the limit and adds advanced features for a one-time $9.99 unlock.
How is Keyword Scout different from AppFollow, Sensor Tower, or AppSprint?
Three differences. First, Keyword Scout runs natively on iPhone and iPad — every other ASO tool is web-only or Mac-only. Second, pricing is one-time $9.99 instead of monthly subscription ($24-100/month). Third, the audience is indie iOS developers, not enterprise marketing teams, so the workflow is designed for solo builders doing their own research.
Is there a free alternative to AppTweak or Sensor Tower?
Keyword Scout is a free-to-start, native iOS alternative to AppTweak and Sensor Tower. Score any App Store keyword for difficulty and saturation, analyze competitors, and grade your listing for free; Pro unlocks unlimited use for a one-time $9.99 instead of a monthly subscription. It's aimed at indie developers doing their own ASO rather than enterprise marketing teams.
Is there an ASO tool with no subscription?
Yes. Keyword Scout is a one-time $9.99 purchase with no recurring fees — plus a free tier you can use forever. Most ASO tools (AppTweak, Sensor Tower, AppFollow, Mobile Action) charge $24–$100+ per month. Keyword Scout gives you keyword scoring, bulk search, 175-country comparison, competitor intelligence, and a listing optimizer for a single payment.
Can I do App Store keyword research on iPhone?
Yes. Keyword Scout is built natively for iPhone and iPad. Most ASO tools require sitting at a desktop or signing into a web dashboard, but Keyword Scout lets you research keywords, grade your listing, and check competitor rankings directly from your phone — useful when ideas hit between meetings.
Does Keyword Scout require an account?
No account required. No email, no sign-up. All your data — saved keywords, tracked apps, ranking history — stays on your device using Apple's SwiftData framework. Nothing is sent to any server.
What's the difference between difficulty and saturation scores?
Difficulty measures how strong the top-ranking apps are for a keyword — based on review counts and ratings. A high difficulty means established apps dominate and ranking against them is hard. Saturation measures how many apps already use the keyword in their title or subtitle. High saturation means the keyword is structurally claimed; low saturation means the space is open even if difficulty is high.
Which countries does Keyword Scout support?
All 175+ App Store markets. Pro users can compare keyword performance across any country, helping find markets where a keyword has lower competition or higher demand than in the US. Free users can search any single market.
Privacy
Your data stays on your device.
Keyword Scout was built with a simple rule: don't collect what you don't need.
🔒
No data collection
Keyword Scout does not collect, store, or transmit any personal information — ever.
📱
Stored locally
All data you create — saved keywords, tracked apps, ranking history — is stored on your device using Apple's SwiftData framework.
🌐
Public API only
Keyword searches query Apple's public iTunes Search API solely to retrieve App Store data. No user identifiers are included in those requests.
🚫
No advertising or profiling
No advertising frameworks, no crash reporting, no user profiling. Anonymous event counts (e.g. "a search happened") are sent via TelemetryDeck — no personal data, no identifiers. Purchases are handled entirely by Apple via StoreKit.
Keyword Scout does not collect, store, or transmit any personal information. All data you create — saved keywords, tracked apps, ranking history — is stored locally on your device using Apple's SwiftData framework and is never sent to any server or shared with any third party. Keyword searches query Apple's public iTunes Search API solely to retrieve App Store data; no user identifiers are included in those requests. In-app purchases are processed entirely by Apple via StoreKit. Anonymous usage signals (event counts only — no personal data, no device identifiers) are reported via TelemetryDeck solely to understand which features are used. Keyword Scout uses no advertising frameworks and no crash reporting tools.