Rotation Count: Turn Counter is made and published by Kyu-Hee Jang. AppBrain is an independent app data site and isn't affiliated with Kyu-Hee Jang. The app name, icon, screenshots and description belong to Kyu-Hee Jang and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- August 6, 2026
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Releases
Updates seen on the App Store- Version
- 1.0.20
- Launched
- April 2026
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 57.7 MB
- Content rating
- High
Technologies used by Rotation Count: Turn Counter
About the app and developer
About Rotation Count: Turn Counter
Rotation Count: Turn Counter was an utilities app developed by Kyu-Hee Jang. It was removed from the App Store Aug 23, 2026.
User Ratings
The app had no ratings.
App Information
Rotation Count: Turn Counter was free. The app size was 57.65 MB. The last available version was 1.0.20. The last update was on August 6, 2026.
Technical Requirements
The app had a content rating of High Maturity. The app had been available on the App Store since April 2026.
Developer information for Kyu-Hee Jang
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Store listing
By Kyu-Hee Jang, from the App StoreSimilar apps
Description by Kyu-Hee Jang Written by the developer, not by AppBrain. Click to read.
Tap Start, place your phone on the rotating object (or attach it for full revolutions), and watch the counter move. The live chart visualizes angular velocity, while direction detection tells you clockwise from counter-clockwise.
Key Features:
- Real-time rotation counting with gyroscope
- Direction detection (CW/CCW)
- Live angular velocity chart
- Min, max, and average tracking
- Session timer and elapsed display
- CSV data export for full sessions
- Min/max/average and sample-rate display
- Clean, intuitive dark interface
Perfect for hobbyists testing fan speeds, mechanics measuring drill RPM, fitness fans counting bike crank revolutions, or engineers diagnosing motor performance. Know exactly how fast — and which way — anything spins.