Skip to content
Tech Dev NotesTech Dev Notes
Apps

Every app in the catalog, its developer, and a lookup for any other app.

  • App directoryTracked apps on iOS and Android, by category
  • Find any appLive App Store and Google Play lookup
  • DevelopersPublishers and their apps
  • Compare appsHead to head ratings, ranks, versions
Charts

Live store top charts, plus ranks and movers for the apps we track.

  • App Store chartsLive top free, paid, grossing on iPhone
  • Google Play chartsLive top charts on Android
  • Tracked appsAI and top apps: ranks and weekly movers
Screens

Real in-app screens, store listing screenshots, and launcher icons.

  • In-app screensReal-device iOS and Android UI
  • Store screenshotsApp Store and Google Play listings
  • App iconsAdaptive, monochrome, themed
Tech stacks

SDKs, frameworks and APIs detected in shipped app builds.

  • Tech stacks by appAnalyzed iOS and Android builds
  • TechnologiesEvery detected SDK and framework
Notes

Articles.

  • BlogArticles and guides
Labs

X feature flags, Grok companions, and Grokipedia.

  • X feature flagsFeature switches in X web
  • Grok companionsAni, Mika, Rudi, Valentine
  • GrokipediaRandom article and index
/
Try asking
?Top climbers on the App Store this weekAsk
?Where does ChatGPT rank?Ask
?Which apps use RevenueCat?Ask
?Highest rated apps on Google PlayAsk
?Largest iOS appsAsk
?Most used SDKs on AndroidAsk

Status

System status.

Live signals from the production health endpoint. This page is informational and not a third-party status host.

Overall: Operational

Components

  • Website

    build 7fef1a1

    OK

  • App data freshness

    collecting on schedule

    OK

  • Object storage

    reachable

    OK

  • Backups

    unknown

    Attention

  • Scheduled jobs

    running

    OK

  • Store charts

    refreshed by the latest run

    OK

Machine-readable: /api/health

Apps
  • App directory
  • Find any app
  • Developers
  • Compare apps
Charts
  • App Store charts
  • Google Play charts
  • Tracked apps
Screens and icons
  • In-app screens
  • Store screenshots
  • App icons
Tech stacks
  • Tech stacks by app
  • Technologies
Notes
  • Blog
Labs
  • X feature flags
  • Grok companions
  • Grokipedia

Tech Dev Notes © 2026

RSSAboutPublic APIStatusSecurityPrivacyTermsSite map@techdevnotes