Apps by Eiji Chiba
ToneQuiz app icon

Education

ToneQuiz

Eiji Chiba

Free download In-app purchases unconfirmed
Open on Apple

About this app

ToneQuiz – Ear & Frequency Training App toneQuiz is an ear training app designed for anyone looking to improve their sense of pitch and listening skills. By utilizing sine waves and white noise, it naturally enhances your auditory resolution by training your frequency and pitch perception through interactive quizzes. [Key Features] ・Tone Quiz: Listen to a sine wave and guess the correct frequency in Hz. Perfect for pitch and relative pitch training.  ・Modes: Progressively challenge yourself with 1-Octave Band (Easy) and 1/3-Octave Band (Hard) modes. ・Noise Quiz: Guess the center frequency of band-pass filtered white noise. Ideal for sharpening your frequency identification skills.  ・Modes: Progressively challenge yourself with 1-Octave Band (Easy) and 1/3-Octave Band (Hard) modes. ・Volume Difference Quiz (Pink Noise):  ・Modes: 3.0 dB / 1.5 dB / 0.5 dB [Recommended For] Creators looking to train their ears for music production and DAWs. Those seeking effective pitch and auditory training. Students and engineers studying acoustics or audio signal processing. Audiophiles, instrumentalists, and singers. Anyone interested in brain training or boosting their listening abilities. Why not make ear training fun with toneQuiz? From music learners to audio enthusiasts, it’s the perfect frequency training app for a wide variety of users.

Latest release

What’s New

Version 1.5 Jul 15, 2026

Fixed a bug.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 20, 2026 · 0 ratings Aug 20, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 20, 2026 · Free Aug 20, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 20, 2026 · 12:55 AM Free

Screenshots

ToneQuiz iPhone screenshotToneQuiz iPhone screenshotToneQuiz iPhone screenshot ToneQuiz iPad screenshotToneQuiz iPad screenshotToneQuiz iPad screenshot