Mobile — App Store Optimization (ASO)

ASO is mostly paid SaaS territory — Sensor Tower / data.ai dominate the enterprise tier. Free / generous tiers exist for indie projects. For paid acquisition / install attribution see Mobile — Analytics & Attribution.

Keyword tracking + competitor analysis

• AppFollow — paid + small free tier; review monitoring + keyword tracking + reply automation.
• Sensor Tower — paid; enterprise-tier ASO + market intelligence.
• data.ai (formerly App Annie) — paid; the other enterprise giant.
• MobileAction — paid; ASO + Search Ads management.
• AppRadar — paid + free tier; Berlin-based; competitive pricing.
• Storemaven — paid; creative testing and optimization.
• AppTweak — paid; ASO with competitive intelligence.

Creative / screenshot A/B testing

• ★ Apple App Store Product Page Optimization — Apple's built-in A/B testing for screenshots, icons, preview videos. Free with Developer Program. Use this first.
• ★ Google Play Custom Listings + Store Listing Experiments — Play's built-in A/B testing.
• SplitMetrics — paid; pre-store creative testing via ad networks.
• Storemaven — paid; same idea.

Review monitoring + reply

• ★ App Store Connect API + Google Play Developer API — DIY review pulling; free.
• AppFollow — popular hosted option; paid + small free tier.
• ReviewBot — Slack-integrated; paid.
• Apptentive — in-app review prompting + sentiment; paid.
• Helpshift Reviews — paid.

Localization for ASO

• ★ App Store Connect supports up to ~40 locales; Google Play similar.
• Crowdin / Lokalise / POEditor / Phrase — translation management; see Mobile — Localization.
• Tolgee — open-source TMS; free self-host.

Asset / screenshot generation

• fastlane snapshot + fastlane frameit — automated screenshots in device frames.
• Screenshots Pro, PreviewBox — paid generators.
• Figma + plugin — manual but flexible.
• Rotato — paid; 3D device mockups.

Indexed deep links / app indexing

• Apple App Site Association + assetlinks.json — for Universal / App Links indexing.
• Schema.org SoftwareApplication — web SEO surfaces app metadata.
• See Mobile — Analytics & Attribution for deep-link providers.

Honest take

• For indie / small teams in 2026: Apple's and Google's built-in A/B testing + AppFollow free tier + DIY API pulling will cover the basics.
• Mid-tier: AppRadar is the most reasonable price/feature.
• Enterprise: Sensor Tower / data.ai because that's where the data depth lives.
• The honest truth: ASO tools mostly tell you what to test; you still have to decide what changes to ship. Start with built-in A/B testing.

Pick this if…

• Indie default: Apple PPO + Play Store Listing Experiments + manual keyword tracking; AppFollow free tier for review notifications.
• Mid-tier ASO: AppRadar.
• Enterprise market intel: Sensor Tower or data.ai.
• Creative pre-launch testing: SplitMetrics or Storemaven.
• Just review monitoring: AppFollow free or your own App Store Connect API script.