About this app
Use calculator directly on keyboard anywhere, anytime. No switch apps, no copy and paste results anymore! You must enable the keyboard under system settings, then select it in your keyboard, using the globe button. 1. Open the settings app 2. Go General > Keyboard > Keyboards > Add New Keyboard 3. Add Calc4Key 4. Start typing in any app 5. Press "globe" icon to switch to the Key4Cal keyboard 6. Enjoy
Latest release
What’s New
Fixed minor bug
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 17, 2026 · 7:38 PM $0.99
Screenshots
