sonarApp Store Optimization Insights
Data-driven research, practical guides, and strategies for ranking higher on the App Store and Google Play.
Apple Search Ads Bidding: CPT, CPA & How to Set Bids
Learn how Apple Search Ads bidding works — CPT vs CPA goals, how to set competitive bids, and how keyword data prevents overspending on every tap.
App Store character limits: subtitle, keywords
The App Store subtitle limit is 30 characters, title 30, keywords 100, description 4,000. Every iOS and Google Play character limit in one table.
Free ASO Keyword Tools: What They Do & Trust
Not every free ASO keyword tool gives you reliable data. Learn what each tool actually measures, where the numbers break down, and which ones to trust.
ASO Agency, Tool, or DIY? A Cost-Benefit Guide
Choosing between app store optimization services? This honest framework compares agencies, tools, and DIY ASO — with costs, time, and decision criteria.
How to name an app: rules, availability, ranking data
How to name an app you can rank with and own: 63% of top-10 App Store names contain the searched phrase. Plus store, trademark and domain checks.
App Store screenshot sizes (iPhone, iPad, Play)
Exact App Store screenshot sizes in pixels for every iPhone and iPad display class, plus Google Play specs, formats and upload limits — in one place.
Play Integrity API verdicts: when to enforce
Play Integrity API verdicts explained — basic, device and strong integrity — and when your Android app should enforce the check or skip it.
Play Store categories and tags: the full list
Every Google Play category for apps and games, plus how Play Store tags work — pick the right category and 5 tags for your Android app.
How Play Store ranking works: factors iOS lacks
How Google Play ranks apps: query match first, then installs, ratings, vitals and backlinks. Plus the seven ranking factors iOS doesn't have.
Google Play Pre-Registration: Still Worth It?
Google Play pre-registration can seed day-one installs that boost early ASO rankings. Here is when it works, when to skip it, and how to maximize impact.
Play Console Search Analytics: Read the Data
Play Console search analytics can mislead you if you read them wrong. Learn what each metric actually measures, where the gaps are, and how to act on the data.
App Store A/B Testing: PPO and Play Experiments
A/B test your store listing with Apple's product page optimization and Google Play experiments: what each can test, the limits, and how to read results.
Android App Bundle vs APK: key AAB differences
AAB vs APK: how an Android App Bundle differs from an APK in size, signing and sideloading — and why Google Play has required AAB since 2021.
Google Play Long Description: Keyword Structure
Learn how to structure your Google Play ASO long description for optimal keyword density — with character limits, placement rules, and real ranking data.
iOS Universal App: iPad Differentiation Guide
Learn how to architect an iOS universal app for iPad differentiation. Covers adaptive layouts, split views, ASO metadata, and iPad-specific keyword strategy.
TestFlight Beta Testing for ASO Metadata
Learn how to use TestFlight beta testing to validate App Store metadata before launch. A step-by-step strategy for titles, subtitles, keywords, and screenshots.
iOS Widget Extensions: Discovery and ASO Impact
iOS widget extensions create a persistent presence on home screens. Learn how widgets affect App Store discovery, retention signals, and ASO strategy.
StoreKit 2 Migration Checklist for iOS Devs
A step-by-step StoreKit 2 migration checklist covering async/await APIs, server-side changes, receipt removal, testing, and ASO impact for iOS developers.