# Wow and Flutter Turntable RPM — Analog VU Meter Calibrator

> Analog VU Meter Calibrator (iPhone/iPad app by NOH HIYEONG.)

- Source: https://appshunter.io/ios/app/wow-and-flutter-turntable-rpm/id6759857012 (this page in markdown: same URL + `.md`)
- Developer: [NOH HIYEONG](https://appshunter.io/developer/1839727056)
- Category: Utilities, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 33 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-03-08
- Data updated: 2026-08-22
- User reviews in markdown: https://appshunter.io/ios/app/wow-and-flutter-turntable-rpm/id6759857012/reviews.md

## What is Wow and Flutter Turntable RPM?

Are you sure your turntable is perfectly calibrated? Even high-end audio systems lose their true sound with a 0.1 RPM deviation. 

Wow and Flutter is a professional-grade calibration tool designed for audiophiles. Simply place your phone on the platter. Using strictly the device's built-in gyroscope (no cameras, no vision AI, 100% offline), it measures your turntable's rotational speed and microscopic variations (Wow and Flutter) up to two decimal places. Experience the heavy brutalist analog VU meter interface and feel the haptic feedback when you hit the perfect 33.33 RPM.

  FREE FEATURES:
  - 33 & 45 RPM measurement
  - Real-time VU meter with needle animation
  - Wow & Flutter percentage display
  - Haptic feedback at target lock
  - 5 free measurement sessions

  UNLOCK PRO ($6.99 one-time):
  - Unlimited measurement sessions
  - 16 & 78 RPM speed modes
  - Real-time RPM time-series graph
  - W&F quality grade badge (Excellent/Good/Fair/Poor)
  - Save measurements & full history log
  - RPM calibration offset tool

Terms of Use: https://prizmchain.github.io/wnf-terms-of-service.html
Privacy Policy: https://prizmchain.github.io/wnf-privacy-policy.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| W&F Pro | $6.99 | one-time |



## Version history (last 3 releases)

### 1.1.0 — 2026-08-20

Version 1.1.0 makes calibration smoother and more reliable.

• Added Italian and Brazilian Portuguese
• Improved purchase and restore handling
• Optimized the layout for compact iPhones
• Improved accessibility and overall stability

### 1.0.1 — 2026-08-04

• Improved secure storage of free usage counts so they remain available after reinstalling the app.
• Improved purchase-status checks and overall stability.

### 1.0 — 2026-03-09

No release notes.

## Apps similar to Wow and Flutter Turntable RPM

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Rpm Meter: Calibrate Turntable](https://appshunter.io/ios/app/rpm-meter-calibrate-turntable/id6766424655) | — | Free | Utilities |
| [Simple GPS Speed](https://appshunter.io/ios/app/simple-gps-speed/id6560113245) | — | Free | Utilities |
| [Grooved: Turntable Calibration](https://appshunter.io/ios/app/grooved-turntable-calibration/id6479003866) | 4.9 (124) | Free | Utilities |
| [Stroboscope: 300Hz + Presets](https://appshunter.io/ios/app/stroboscope-300hz-plus-presets/id6760181575) | — | Free | Utilities |
| [RPM Meter for Turntable](https://appshunter.io/ios/app/rpm-meter-for-turntable/id6473157917) | 2.5 (4) | Free | Utilities |
| [Rotation Count: Turn Counter](https://appshunter.io/ios/app/rotation-count-turn-counter/id6761872688) | — | Free | Utilities |

## More apps by NOH HIYEONG

- [SmartTip+](https://appshunter.io/ios/app/smarttip-plus/id6752533486)
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- [KantanPDF](https://appshunter.io/ios/app/kantanpdf/id6752878581)
- [PicoBrain - Daily Brain Games](https://appshunter.io/ios/app/picobrain-daily-brain-games/id6753330446)
- [BookStamp](https://appshunter.io/ios/app/bookstamp/id6754551041)
- [QuickCutPro](https://appshunter.io/ios/app/quickcutpro/id6755079529)

All apps by NOH HIYEONG: https://appshunter.io/developer/1839727056

## Related topics

[wow and flutter turntable rpm](https://appshunter.io/ios/topics/wow-and-flutter-turntable-rpm) · [turntable](https://appshunter.io/ios/topics/turntable) · [turntable rpm](https://appshunter.io/ios/topics/turntable-rpm) · [turntable speed](https://appshunter.io/ios/topics/turntable-speed) · [victrola stream](https://appshunter.io/ios/topics/victrola-stream) · [rpm meter for turntable](https://appshunter.io/ios/topics/rpm-meter-for-turntable) · [rpm speed and wow](https://appshunter.io/ios/topics/rpm-speed-and-wow) · [turntable strobe](https://appshunter.io/ios/topics/turntable-strobe)

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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 2026-08-22.*