The best free ASO tools in 2026 (and where they fall short)

If you're starting an indie app from scratch in 2026, you don't actually need to pay anything for ASO. The free tier of available tools — open-source scrapers, free APIs, public autocomplete endpoints — is meaningfully more capable than what existed even three years ago.

This post is the honest map of what's actually free, what works, where the limits are, and when (and why) you might want to upgrade to a paid tool.

We make ASO Pilot, which has a free tier (more on that at the end). But the tools below are genuinely useful regardless of whether you ever pay anyone for ASO.

The fundamentals: what every free tool can do

The basic ASO loop you can run for free:

1. Find candidate keywords — usually via autocomplete scraping in your target country
2. Estimate competition — by looking at the top 10 results for each keyword
3. Track your ranks — by querying search results periodically and finding your app's position
4. Audit your existing metadata — by reading your live App Store listing and applying ASO best practices manually

All four are doable for $0 with public APIs and a Saturday afternoon.

Tool 1: google-play-scraper (npm)

github.com/facundoolano/google-play-scraper

Open-source Node.js library that scrapes Google Play Store data. Active maintenance, well-tested, used in production by many smaller ASO tools (us included).

What it does:

• Search Play Store by keyword in any country
• Get app details (title, descriptions, ratings, install count, reviews)
• Get autocomplete suggestions per country
• List similar apps, top apps in a category

What you can build with it:

• Daily rank checker for your own app across keywords (just search and find your app's position)
• Competitor metadata change monitor (scrape competitor pages, diff against last week)
• Category trend tracker (top apps in your category over time)

Limits:

• Rate limits aren't documented but exist; throttle your requests
• HTML structure changes occasionally break the scraper; updates land within a few days usually
• Doesn't work for iOS (different library needed for that)

This is genuinely the backbone of free Play Store ASO. Paid tools mostly add a UI on top of similar scraping.

Tool 2: iTunes Search API (Apple, official)

https://itunes.apple.com/search

Apple's official, public, free, no-API-key search API. Designed for affiliate/discovery purposes, but works fine for ASO.

What it does:

• Search by keyword in any country (country=US, country=ES, etc.)
• Get full app details (title, description, ratings, category)
• Filter by entity type (software for apps)
• Returns up to 200 results per query

What you can build with it:

• iOS rank checker (search → find your app → record position)
• iOS category competitor list
• iOS metadata audit input

Limits:

• Doesn't return subtitle or keywords field (Apple doesn't expose these publicly anywhere)
• No autocomplete (use the unofficial endpoint below for that)
• 20 requests per minute soft limit; throttle accordingly
• "Lite" data — useful for ASO ranking work, not a full intelligence platform

Tool 3: Apple search hints (unofficial)

https://search.itunes.apple.com/WebObjects/MZSearchHints.woa/wa/hints?clientApplication=Software&term={query}&country={country}

The undocumented endpoint that powers App Store autocomplete. Free, public, returns JSON, works per country.

What it does:

• Returns autocomplete suggestions for a seed term in a country

Why this matters: autocomplete is the honest demand signal for ASO. The store only suggests terms that real users in that country actually type. If a keyword shows up in autocomplete, there's demand. If it doesn't, you're guessing.

We use this endpoint in ASO Pilot as the primary input to our keyword "demand" score, replacing the modelled scores most other tools use.

Limits:

• Undocumented (Apple could change or remove it without warning, though it's been stable for years)
• Rate limits exist, throttle
• Returns at most ~10 suggestions per query
• You need to seed thoughtfully — querying just "yoga" gives generic results, querying "yoga sleep" gives more specific suggestions

Tool 4: AppFigures Explorer (free tier)

appfigures.com/tools

AppFigures has a paid intelligence platform, but they also publish a few free tools. The keyword tool lets you check your app's metadata against keyword opportunities, no signup required for basic queries.

What it does:

• Look up keyword popularity scores per country (modelled, not SDK-sourced)
• Check what your app is currently ranking for
• See related keywords for a seed term

Limits:

• Free tier is heavily rate-limited
• Modelled popularity scores, not real volume
• Mostly a teaser for the paid product

Worth using occasionally for sanity-checking your own keyword research.

Tool 5: Sensor Tower's free Store Intelligence (formerly priori data)

sensortower.com/free-tools

SensorTower (the enterprise platform) publishes some basic free tools — top charts per country, keyword search, category leaders.

What you can do for free:

• See top apps in any category in any country
• Check basic keyword popularity (rough buckets, not numerical)
• Browse category trends

Limits:

• Most useful data is paywalled
• Free tier is a marketing funnel for the enterprise product

Worth bookmarking for occasional category research, not a daily-use tool.

Tool 6: Mobile Action (free tier)

mobileaction.co

Mid-tier ASO tool with a real free tier — track up to 5 keywords for free. Limited functionality but a usable rank-tracker substitute if you don't want to build your own.

What you can do for free:

• Track 5 keywords per app
• See basic competitor metadata
• Get keyword suggestions per country

Limits:

• 5 keywords is too few for serious ASO across multiple markets
• Free tier is intentionally underpowered to upsell

Tool 7: Your own Apple/Google search results, manually

The most underrated free tool: open the App Store website in any country (URL pattern: apps.apple.com/{country}/), search a keyword, look at the top 10 results.

What you learn:

• What apps the store thinks are most relevant to that query (ranking signal)
• How established competitors describe themselves (metadata patterns)
• Whether the query is dominated by a few players (high difficulty) or spread across many (lower difficulty)
• What screenshots and icons convert in this category

This is data SensorTower would charge you $1,000/month for, available for free if you're willing to spend 15 minutes per market clicking through. For a single-app indie dev shipping to 3 markets, this is enough.

Tool 8: ASO Pilot (yes, us — free tier)

aso-pilot.app

Full disclosure obviously. Our free tier:

• 1 analysis per month
• 3 markets per analysis
• Full per-market metadata generation (title, subtitle, keywords field, descriptions)
• Audit with prescriptive before → after suggestions
• Autocomplete-verified keyword demand
• Weekly Pulse digest (emailed) for any existing-mode analysis

What it adds over the DIY approach:

• All of the above tools, integrated into one workflow
• AI-generated metadata that respects platform constraints (no duplicate iOS tokens, no Play spam density)
• Localization to 16 markets that uses locally-correct vocabulary, not translation
• Prescriptive fixes you can copy directly into App Store Connect

Limits of the free tier:

• 1 analysis/month means you can't iterate quickly without upgrading
• 3 markets is enough for most indie launches but limiting if you ship to 5+ countries

When to graduate from free tools to paid

If any of these describe you, free tools alone start to limit you:

• You ship in 5+ markets and re-write metadata quarterly. The manual labor across markets becomes the bottleneck. A tool that generates per-market metadata pays for itself in time saved.
• You want continuous monitoring without writing your own scrapers. Building a daily rank tracker is a few days of work. Maintaining it (when scrapers break, when stores change HTML) is forever. Paying $20–$50/month for someone else to maintain that infrastructure is rational.
• You need prescriptive optimization recommendations. Free tools (and most paid tools) tell you what's wrong. They don't write the fix. If you'd rather copy-paste a proposed edit than think through every fix yourself, prescriptive tooling earns its price.
• You're managing 3+ apps. Per-app overhead compounds fast. Tooling reduces it.

When free tools are genuinely enough

Conversely, if all of these apply, you might not need to pay anyone:

• You ship one app
• Your primary market is your home country plus one secondary market
• You're doing ASO quarterly, not weekly
• You enjoy (or don't mind) writing your own scrapers and analysis pipelines
• Your time is cheap relative to your tooling budget

Plenty of indie devs in this category never pay for ASO and rank fine. Free tools + 4 hours per quarter of focused work + waiting 2-3 weeks between iterations = real results.

The cheapest viable workflow (if you're going pure free)

1. Tool 3 (Apple autocomplete) to find candidate keywords per country
2. Tool 1 (google-play-scraper) to do the same for Play
3. Tool 7 (manual search) to validate competition and learn metadata patterns
4. Tool 2 (iTunes Search) to track your iOS rank weekly
5. Tool 1 (google-play-scraper) to track your Play rank weekly
6. A spreadsheet to keep it organised
7. Patience to wait 2–3 weeks between metadata changes

That's it. No subscription required. About 4–6 hours of setup, 2 hours per week of maintenance.

The cheapest viable workflow (if you'd pay $0–$50/month)

1. Tool 8 (ASO Pilot) for keyword research, metadata generation, audit, and weekly Pulse — handles steps 1–6 above plus more
2. Tool 7 (manual search) for occasional sanity checks
3. About 30 minutes per week of attention

The marginal $49/month buys you back ~6 hours of weekly work and gives you better localization than DIY. For most indie devs whose hourly rate is above $10, that's a positive ROI before you count the rank improvements.

Bottom line

Free ASO tooling in 2026 is good enough that no indie dev has an excuse to skip ASO entirely. The bar to "doing ASO at all" is essentially zero now.

The bar to "doing ASO well across multiple markets without burning weekends on scrapers" is around $50/month. Below that, you're trading time for money. Above that — for indie devs and small studios — you're likely overpaying for features built for agencies.

If you want to skip the DIY phase, ASO Pilot's free tier covers the core ASO loop end-to-end. If you'd rather build it yourself, the seven tools above are how.