Otoful: Ear Training & Singing
Sing & train your pitch by ear
Only for iPhone
Free
iPhone
Sing and Otoful instantly tells you if you're on pitch. Train the ear you need to harmonize, hold your part in a chord, tap out the beat—minutes a day. Free.
■ Ear training that talks back
Otoful is an ear-training app that gives you instant feedback the moment you sing. Made for casual singers and adult music circles—a cappella, choir, chorus—it helps you build the ear you need to harmonize, a little every day.
This isn't a listen-and-pick quiz. You sing, and you see in real time whether you're on pitch or off—and by how much. So you don't just feel like you understand; you actually train an ear and a voice that can sing in tune.
■ Who it's for
・Singers in a cappella or choir groups who want to harmonize with the people around them
・Anyone unsure about their pitch who wants to stop being "tone deaf"
・People building a foundation for karaoke or vocal lessons
・Anyone who'd rather practice the basics at their own pace, without relying on a more experienced member
■ Five courses
・Pitch 1: listen and match by voice. The core drill—lay your own voice over the guide tone.
・Pitch 2: more advanced ear training. The guide becomes a real human voice, so it feels like singing with someone.
・Cadence 1: hold one voice in a chord. Sing your own part without getting pulled off by the harmony around you.
・Cadence 2: harmonize with real voices. The same drill, with a chord sung by human voices as your guide.
・Rhythm 1: build your sense of rhythm. Tap the beat on screen—no mic and no earphones needed, so you can practice when you can't sing out loud.
■ Features
・Real-time pitch detection: instant feedback every time you sing—right or off, and how far.
・Daily lessons: a few minutes each. Short and easy to keep up with.
・Rewards for showing up: track your streak and total practice. We celebrate the habit first, before progress.
・Beginner-friendly tolerance: no harsh scoring out of the gate—land notes that feel good while you sharpen your accuracy over time.
・Practice reminders: a quiet nudge at the time you pick (off by default).
・Share your practice: turn your streak and badges into a card and post it to LINE, X, and more.
■ Designed to keep you going
Judging too strictly breaks beginners. Otoful aims for the sweet spot: satisfying to get right, yet you still feel yourself improving. No demoralizing leaderboards—the only person you're compared to is yesterday's you.
■ Good to know
・The Pitch and Cadence courses use your microphone. Headphones are recommended (they help separate the guide tone from your own voice). The Rhythm course needs neither.
・No account needed. Your practice data stays on your device.
・Free, supported by ads.
All you need is your voice—no instrument required—to start building your musical foundation today. Aim for the day you can harmonize a song on your own.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
## Improvements & Bug Fixes
- Fixed a bug where the app could close during ear training on some newer iPhone and iPad models.
- Minor bug fixes and stability improvements.
The developer, Ishinomaru, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ishinomaru
- Size
- 81.8 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Ishinomaru