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Tech Dev Notes
Apps

Every tracked app, 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 charts, tracked app standings, and this week's movers.

  • App Store chartsLive top free, paid, grossing on iPhone
  • Google Play chartsLive top charts on Android
  • Tracked rankingsTracked apps across markets
  • MoversBiggest rises and drops this week
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 and xAI side projects.

  • BlogArticles and guides
  • X feature flagsFeature switches in X web
  • Grok companionsAni, Mika, Rudi, Valentine
  • GrokipediaRandom article and index
Apps
  • App directory
  • Find any app
  • Developers
  • Compare apps
Charts
  • App Store charts
  • Google Play charts
  • Tracked rankings
  • Movers
Screens and icons
  • In-app screens
  • Store screenshots
  • App icons
Tech stacks
  • Tech stacks by app
  • Technologies
Notes
  • Blog
  • X feature flags
  • Grok companions
  • Grokipedia

Tech Dev Notes © 2026

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About

What Tech Dev Notes tracks.

Tech Dev Notes is an independent project that monitors how the most interesting AI and developer apps perform across the Apple App Store and Google Play - so you can see what shipped, what is climbing, and how leading apps are built, all in one place.

What we cover

Live store charts, country-by-country rankings, weekly movers, real-device screenshots, and detected tech stacks.

How the data works

We collect publicly available data from the App Store and Google Play - chart positions, store listings, ratings, release notes, and version metadata - and refresh it regularly. Figures are snapshots of public store data and may lag the stores by a short window.

Independence

Tech Dev Notes is not affiliated with, endorsed by, or sponsored by Apple, Google, or any of the app developers tracked here. All product names and trademarks belong to their respective owners.

Get in touch

Questions, corrections, or a request to track an app? Reach us on @techdevnotes. See also our Privacy and Terms.