# Rotation Count: Turn Counter — Spin Counter & RPM Tracker

> Spin Counter & RPM Tracker (iPhone/iPad app by Kyu-Hee Jang.)

- Source: https://appshunter.io/ios/app/rotation-count-turn-counter/id6761872688 (this page in markdown: same URL + `.md`)
- Developer: [Kyu-Hee Jang](https://appshunter.io/developer/1587578867)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 16.4 · 58 MB
- Languages: English
- Released: 2026-04-15
- Data updated: 2026-08-11
- User reviews in markdown: https://appshunter.io/ios/app/rotation-count-turn-counter/id6761872688/reviews.md

## What is Rotation Count?

Rotation Count turns your iPhone into a precise spin tracker. Using your device's gyroscope, it counts every rotation in real time — perfect for testing motors, tracking exercise reps, measuring drill turns, or any task where revolutions matter.

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.


## Version history (last 5 releases)

### 1.0.20 — 2026-08-06

Ads no longer interrupt you mid-task. Anything full-screen now waits until you have finished what you were doing, and the app stops showing a blank pause where an ad failed to load.

### 1.0.19 — 2026-08-04

Now fully localized — the app displays in your device's language. Plus performance and stability improvements.

### 1.0.18 — 2026-07-30

Now fully localized — the app displays in your device's language. Plus performance and stability improvements.

### 1.0.17 — 2026-07-28

Now fully localized — the app displays in your device's language. Plus performance and stability improvements.

### 1.0.16 — 2026-07-27

Now fully localized — the app displays in your device's language. Plus performance and stability improvements.

## Apps similar to Rotation Count

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Wow and Flutter Turntable RPM](https://appshunter.io/ios/app/wow-and-flutter-turntable-rpm/id6759857012) | — | Free | Utilities |
| [BeyGear: Spin Speed Meter](https://appshunter.io/ios/app/beygear-spin-speed-meter/id6779308999) | 5.0 (2) | Free | Utilities |
| [Rpm Meter: Calibrate Turntable](https://appshunter.io/ios/app/rpm-meter-calibrate-turntable/id6766424655) | — | Free | Utilities |
| [Spin Meter](https://appshunter.io/ios/app/spin-meter/id6761355145) | — | Free | Utilities |
| [Strobe Light – RPM](https://appshunter.io/ios/app/strobe-light-rpm/id6747579407) | — | Free | Utilities |
| [SoundTach](https://appshunter.io/ios/app/soundtach/id6755052370) | 4.2 (5) | Free | Utilities |

## More apps by Kyu-Hee Jang

- [Calculator+ Tip Tax BMI Unit](https://appshunter.io/ios/app/calculator-plus-tip-tax-bmi-unit/id1587591476)
- [QR Lens+ Barcode Scanner Pro](https://appshunter.io/ios/app/qr-lens-plus-barcode-scanner-pro/id1590631012)
- [Sound Noise Meter+ dB SPL](https://appshunter.io/ios/app/sound-noise-meter-plus-db-spl/id1593197145)
- [진동 측정기](https://appshunter.io/ios/app/id6759666731)
- [Lux Light Meter - Luminance](https://appshunter.io/ios/app/lux-light-meter-luminance/id6759858193)
- [Barometer: Air Pressure](https://appshunter.io/ios/app/barometer-air-pressure/id6759883097)

All apps by Kyu-Hee Jang: https://appshunter.io/developer/1587578867

## Related topics

[rotation screen](https://appshunter.io/ios/topics/rotation-screen)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-11.*