# Tone-Sense — Find the target pitch by ear

> Find the target pitch by ear (iPhone/iPad app by seiji honda.)

- Source: https://appshunter.io/ios/app/tone-sense/id6771591542 (this page in markdown: same URL + `.md`)
- Developer: [seiji honda](https://appshunter.io/developer/1896430544)
- Category: Games, Casual
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 2 MB
- Languages: Japanese
- Released: 2026-05-23
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/tone-sense/id6771591542/reviews.md

## What is Tone?

Tone-Sense is a minimalist pitch-matching mini-game. Hunt a target frequency by producing any sound the microphone can pick up — your voice, a whistle, a hum, tapping or scraping an object, an instrument, or even audio played from another device. The app uses the microphone purely for on-device pitch analysis — nothing is recorded, saved, or sent anywhere.

■ How to play
1. Pick a target pitch (100 / 200 / 1000 Hz, or a custom value in 100 Hz steps up to 10000 Hz)
2. Hold the mic button and produce a sound close to the target (up to 3 seconds)
3. Release the button — the dominant frequency of your sound is estimated and compared to the target

■ Judgment tiers
- INSANE — within ±3% (near-perfect pitch)
- Great — within ±10%
- Otherwise

■ Features
- Voice, whistle, humming, tapping or scraping objects, instruments, or any external tone source — anything that produces a clear pitch works
- On-device pitch detection using AVAudioEngine + FFT (Accelerate framework). No server, no disk save, no leakage
- Two visual themes: Cyber (neon green) and Soft (warm cream)
- Bilingual UI (Japanese / English)
- In-app help sheet explaining what "frequency / Hz" means
- Works fully offline

■ Privacy
Data collected: none. Microphone audio is processed only in memory during a measurement, then immediately discarded. No advertising, no analytics, no third-party SDKs.

"Tone-Sense" is the third entry in the Sense series (Tilt Hit / Hertz Sense / Tone-Sense).


## Version history (last 4 releases)

### 1.0.3 — 2026-08-13

- Improved pitch detection accuracy.
- Made it easier to retry after an interrupted recording.
- Improved guidance when microphone input cannot be started.
- Enhanced overall stability and usability.

### 1.0.2 — 2026-06-14

This update brings a few improvements for a smoother experience:
• More stable pitch measurement
• Fixed accidental starts when the mic button is tapped only briefly
• Smoother microphone-permission flow on first launch

Thanks for playing! We'd love to hear your feedback.

### 1.0.1 — 2026-05-30

Updated screenshots.

### 1.0 — 2026-05-24

No release notes.

## More apps by seiji honda

- [Lock2Cam](https://appshunter.io/ios/app/lock2cam/id6767222283)
- [Tilt Hit](https://appshunter.io/ios/app/tilt-hit/id6767581735)
- [Hertz Sense](https://appshunter.io/ios/app/hertz-sense/id6767974523)
- [Causal Loop Diagram](https://appshunter.io/ios/app/causal-loop-diagram/id6769942289)
- [Wash&Shine](https://appshunter.io/ios/app/wash-and-shine/id6769987213)
- [Tippy Brim](https://appshunter.io/ios/app/tippy-brim/id6769992872)

All apps by seiji honda: https://appshunter.io/developer/1896430544

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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 2026-08-15.*