Free ASO Tools for App Growth

Check your App Store app name against the 30-character limit as you type.

Analyze keyword frequency in any app description and spot over-optimization.

Validate your App Store subtitle against the 30-character limit in real time.

Fit the maximum keywords into Apple’s hidden 100-character field.

Keep your App Store promotional text within the 170-character limit.

Track your App Store description length against the 4,000-character limit.

Check your Android app title against Google Play’s 30-character limit and naming policy.

Make every one of Google Play’s 80 short-description characters count.

Balance length and keyword density in your 4,000-character Play description.

Validate every App Store and Google Play text field against its limit in one screen.

Automatically strip duplicates, wasted spaces, and title overlaps from your 100-character keyword field.

Strip the stop words Apple ignores and reclaim keyword field characters.

Generate every combination of two keyword lists for ASO and Apple Ads research.

Merge keyword lists from every source and strip the duplicates in one pass.

Convert app names and metadata between Title Case, Sentence case, UPPER, and lower.

Preview how your description’s line breaks, bullets, and emoji actually render on the stores.

Detect emoji, symbols, and invisible characters that put your metadata at rejection risk.

Compare two versions of any metadata text with a word-level diff.

Turn a bug fix or feature into polished ‘What’s New’ text in seconds.

Start from a proven store description skeleton instead of a blank page.

Look up any keyword’s real App Store popularity score on Apple’s 5–100 scale.

Estimate how hard it is to rank for any App Store keyword before you spend metadata space on it.

See the live search suggestions the App Store shows for any seed term — the queries users actually type.

Expand any seed keyword into the related terms App Store users search around it.

Search any keyword like a user would and see exactly where your app ranks in the results.

Pull the keywords any competitor is targeting straight out of their visible App Store metadata.

Combine your seed keywords with proven modifiers and question patterns to generate long-tail candidates instantly.

Put two or more keywords head-to-head on Apple’s popularity scale and pick the one with real demand.

Browse the searches trending on the App Store right now, in any country.

Check one keyword’s popularity across many App Store countries in a single query.

Describe your app and let AI generate keyword ideas you can validate against live App Store data.

Translate keywords by search intent, not dictionary meaning — get the terms locals actually type.

Split any keyword list into branded and generic terms in one pass.

Mock up exactly how your icon, title, and subtitle will look in App Store search results.

Search any app and get an instant ASO score with concrete fixes for title, subtitle, description, and keywords.

Look up the full public App Store metadata of any app — title, subtitle, description, category, and ratings in one view.

Put two App Store apps side by side and compare their metadata, ratings, categories, and update cadence.

Discover the apps Apple links to any app through its “customers also bought” recommendation graph.

See every app a developer has published on the App Store, with ratings and categories at a glance.

Browse App Store top charts — free, paid, and grossing — for any country and category.

Check where any app ranks in its App Store category charts, in any country.

Find any app’s numeric App Store ID from its name or URL in seconds.

Check which country storefronts an app is available in — and which markets it is missing from.

Build clean, trackable App Store and Google Play links with campaign parameters — no guesswork on the URL format.

Generate a download QR code for your app — rendered entirely in your browser, nothing uploaded anywhere.

Generate the apple-itunes-app meta tag that shows a native App Store banner on your website in Safari.

Generate correct HTML for the official “Download on the App Store” and “Get it on Google Play” badges.

Look up any app’s current version, release date, and full release notes without opening the store.

Browse the latest App Store reviews for any app, in any country, without leaving your browser.

Let AI classify an app’s recent reviews as positive, negative, or neutral — and tell you why.

Paste any app review and get a professional, on-tone developer response drafted by AI in seconds.

Calculate exactly how many new 5-star reviews you need to reach your target average rating.

Mine app reviews for the exact words real users use — then put them in your metadata.

See the star-by-star histogram behind any app’s average rating.

Fill-in-the-blank developer responses for bug reports, feature requests, negative and positive reviews, and refund requests.

Surface an app’s most quotable, helpful positive reviews — ready for your website, ads, and screenshots.

Look up every required screenshot resolution for the App Store and Google Play in 2026.

Upload one 1024×1024 icon and download every required iOS and Android size instantly.

Every iOS and Android icon dimension in one table — store, launcher, and adaptive specs.

The exact 1024×500 spec for Google Play’s feature graphic, plus design rules that convert.

Every rule for iOS App Preview videos and Google Play promo videos in one reference.

Check screenshot headlines and captions against readability-based length guidelines.

Analyze your icon’s contrast and visual complexity to make sure it stands out in the store.

Plan the sequence of your store screenshots so the first three do the selling.

Drop a screenshot into a device-style frame and see it at real store thumbnail size.

Pull the exact dominant colors out of any app icon for brand-consistent store assets.

See your app icon at every real display size, from 29 px settings rows to the 1024 px store master.

Generate consistent, sortable file names for screenshot and icon sets across locales and devices.

Translate an expected organic download uplift into incremental monthly revenue.

Compute CPT, CPA, and tap-to-install rate from your Apple Search Ads spend.

Calculate return on ad spend and the break-even ROAS your margin requires.

Estimate customer lifetime value from ARPU and churn or average lifetime.

Calculate average revenue per user — and see how ARPU differs from ARPPU.

Calculate subscriber churn and convert between monthly and annual rates correctly.

Compute D1, D7, and D30 retention from your cohort numbers and compare to benchmarks.

Turn impressions, page views, and installs into the funnel rates Apple grades you on.

See what Apple actually takes — 30%, 15% Small Business, or 15% after year one.

Project net subscription revenue over time with commission and churn decay built in.

Calculate your free-to-paid conversion rate and benchmark it against the 1–5% norm.

Compare CPI against LTV to get payback period and your maximum profitable CPI.

Run a two-proportion z-test on your A/B results to see if the winner is real.

Find how many visitors per variant your test needs at 80% power and 95% confidence.

Compute effective CPM from ad revenue and impressions, and project earnings at scale.

Convert between install targets, CPI, and budget for any user acquisition plan.

Generate a store-ready privacy policy for your iOS or Android app in minutes.

Draft clear terms of service for your mobile app covering accounts, purchases, and acceptable use.

Create a custom end user license agreement for your app — or learn when Apple’s default EULA is enough.

Lint your app metadata for the phrases and patterns that trigger App Store rejections.

Walk through Apple’s age rating questionnaire before you answer it for real in App Store Connect.

Work out your App Store privacy label — tracking, linked, and not-linked data — before you fill in App Store Connect.

Run through every App Store submission requirement before you press “Submit for Review”.

Everything to nail before, during, and after your app launch — in one interactive checklist.

Check your app against the GDPR and COPPA requirements that apply to mobile developers.

Prepare Google Play’s Data safety form — collection, sharing, and security practices — without guessing.

Work out the maximum cost-per-tap you can bid while staying under your target CPA.

Turn your search terms report into a clean negative keyword list that stops wasted spend.

Turn an install goal into the daily and monthly Apple Ads budget needed to hit it.

Paste keywords once and get formatted exact and broad match lists ready for bulk import.

Plan which custom product pages to build, for which keyword themes, before you brief a designer.

Compare your tap-through and conversion rates against typical Apple Search Ads ranges.

Paste two campaign keyword lists and instantly see the overlaps causing self-competition.

Split your acquisition budget across channels by CPI and volume caps to see blended CPI and projected installs.

Search any iOS app and instantly see which App Store languages its listing supports.

App Store metadata character limits for every localization, in one reference table.

Every App Store storefront country code with its primary language, in one searchable table.

Turn your keywords into the terms native users actually search — not literal translations.

Score languages by market size, competition, and cost to decide what to localize first.

Detect direction issues, bidi control characters, and mixed-direction problems in RTL metadata.

See how Apple’s price points map to local currencies and taxes across major storefronts.

Validate your apple-app-site-association file before broken universal links reach users.

Break any universal link or URL scheme into its parts and catch the mistakes that stop it from opening your app.

Decode App Store Connect API tokens in your browser to debug 401 errors — the token never leaves your device.

Look up any app’s numeric App Store ID from its bundle ID — or go the other way — in one search.

Pick the right day to submit and release your app update, with review times and rollout curves accounted for.

Parse any version number, understand what each part means, and get the right next version suggested.