# Pitch Checker: Watch Tuner — Vocal Training & Note Detector

> Vocal Training & Note Detector (iPhone/iPad app by Shigeki Matsunaka.)

- Source: https://appshunter.io/ios/app/pitch-checker-watch-tuner/id6824197458 (this page in markdown: same URL + `.md`)
- Developer: [Shigeki Matsunaka](https://appshunter.io/developer/1490398291)
- Category: Music
- Price: $5.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Japanese
- Released: 2026-10-26
- Data updated: 2026-10-26

## What is Pitch Checker?

A chromatic tuner and vocal pitch detector for Apple Watch. Sing or play a note and see its name, frequency, and tuning deviation on your wrist.

Pitch Checker uses your Apple Watch microphone to analyze sound in real time and show the note, octave, frequency, and pitch deviation in cents. Use it for vocal exercises, ear training, or basic instrument tuning.

FEATURES
• Live note detection from the built-in microphone
• A large note display with octave and frequency in Hz
• A cents indicator to see whether a note is sharp or flat relative to its reference
• CDEFGAB, Do Re Mi, and Japanese ドレミ note names
• Adjustable reference pitch: A4 from 430 to 450 Hz
• Microphone sensitivity control to ignore quieter sounds
• Tap the background to stop or resume measurement
• Settings saved on your Apple Watch

HOW TO USE
Open the app and allow microphone access. Sing or play one clear note near your watch. The detected note and frequency appear automatically.

Tap the note to change its notation. Open Settings to choose the reference pitch, or tap the microphone sensitivity control to adjust the minimum input volume.

If quiet background sounds trigger the display, raise the minimum input volume. For the clearest readings, use one note at a time in a quiet place.

MADE FOR APPLE WATCH
This is a separate, one-time-purchase Apple Watch app. It works without the Pitch Checker iPhone app or an iPhone subscription. Sound analysis takes place on your watch, and measurement does not require an internet connection.

No ads, subscriptions, or in-app purchases.
Requires watchOS 10 or later.

Microphone access is used for live sound analysis. Audio is not saved or uploaded by this app.

Support: https://pitchchecker.app/
Privacy policy: https://pitchchecker.app/privacy/
Terms of use: https://pitchchecker.app/terms/

## Is Pitch Checker safe?

Not enough ratings yet to assess Pitch Checker.

## Is Pitch Checker legit?

Pitch Checker: Watch Tuner appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Pitch Checker is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-26

Updated localization settings so Japanese is included in the supported languages shown on the App Store.

### 1.0.0 — 2026-10-26

No release notes.

## More apps by Shigeki Matsunaka

- [Pitch Checker: Chromatic Tuner](https://appshunter.io/ios/app/pitch-checker-chromatic-tuner/id1490398292)
- [Simplest Push-Ups Counter](https://appshunter.io/ios/app/simplest-push-ups-counter/id1490426505)
- [InstantMemo](https://appshunter.io/ios/app/instantmemo/id1499441936)
- [CoolPallet シンプルなカラーパレット](https://appshunter.io/ios/app/coolpallet/id1505777495)
- [Simple Multiple Counter](https://appshunter.io/ios/app/simple-multiple-counter/id1506946553)
- [筋トレタイマー 毎日の筋トレに。](https://appshunter.io/ios/app/id1518620688)

All apps by Shigeki Matsunaka: https://appshunter.io/developer/1490398291

---

*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 2026-10-26.*