Tech Dev Notes
Real-time monitoring for App Store and Google Play. Version history, chart rankings, side-by-side comparisons, and in-app screenshots from real devices.
US App Store Rankings
View all charts
Recent Version Releases
Full changelog
App Screenshots
Browse all apps
Tools
App Lookup
Search any iOS or Android app by name or ID. Ratings, version info, and metadata from both stores.
App Charts
Top-ranked apps by store, category, and chart type. Track ranking movements over time.
Compare Apps
Side-by-side ratings, reviews, and chart positions across apps with historical trends.
Version Changelog
Every version release across all monitored apps. When updates ship and what changed.
Screenshots
In-app screenshots captured from real devices. Filter by category, screen type, and tags.
UX Patterns
Browse screenshots across all apps by screen type, category, and tags. Compare UX patterns.
Ranking Map
World map visualization of app chart rankings across countries and stores.
X Flags
Live feature flags from X.com. Current state, toggle history, and change tracking.
Digest
Weekly summary of version releases, rating movements, and ranking changes across all tracked apps.