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Sonar//Free Tools

Free ASO Tools

No sign-up required. Audit your app listing and discover keyword opportunities — completely free.

01

ASO Score Checker

Paste any App Store or Google Play URL and get a free audit of your listing. Checks title length, description, screenshots, ratings, and more against ASO best practices.

Check your score
02

Keyword Generator

Enter an app description or store URL and get keyword suggestions ranked by difficulty, popularity, and opportunity. Export results as CSV.

Generate keywords
03

App Rank Tracker

Paste your app URL and any keywords to see exactly where you rank on the App Store or Google Play, in any country. Live results, export as CSV.

Check rankings

Research

Browse real keyword data and category insights — updated regularly with fresh scraper data.

04

Keyword Difficulty

Browse difficulty scores for hundreds of keywords. Each page shows the top 10 ranking apps, competition analysis, and actionable ASO tips.

Browse keywords
05

ASO Guides by Category

Category-specific ASO strategies for 20+ app categories. Keyword opportunities, difficulty analysis, and optimization tips for indie developers.

Browse guides
06

Country ASO Guides

Market-specific ASO strategies for 40+ countries. Localization tips, language insights, sample keyword difficulty, and store availability.

Browse countries
07

App Comparisons

Side-by-side app comparisons with real data. Ratings, reviews, keyword overlap, ASO scores, and head-to-head analysis.

Browse comparisons

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From the Blog

  • ASO Agency, Tool, or DIY? A Cost-Benefit GuideJun 15 · 12 min
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