Tone-Sense
Find the target pitch by ear
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Hunt a target frequency with any sound — voice, whistle, hum, tap, scrape, instrument, or playback. Pick 100/200/1000 Hz or custom up to 10000 Hz. Test your pitch sense.
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).
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update focuses on stability and readability.
• Fixed a rare crash during pitch analysis
• Smoother performance when showing your result
• Improved text contrast in the light theme
• Fixed the layout in landscape orientation
• Fixed clipped labels on the result graph
• Added support for Reduce Motion
• Music from other apps now resumes right after you leave
The developer, seiji honda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- seiji honda
- Size
- 1.8 MB
- Category
- Casual
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- Japanese
- Age Rating
4+
- 4+
- Copyright
- © Seiji Honda