オトピア｜ボイトレとピアノコード練習

See your pitch as you sing. Check your vocal range, match notes, practice long tones, record sessions, and explore piano chords in one focused practice app.

Otopia brings focused vocal and piano practice together in one clear app.

VOCAL PRACTICE ■ Real-Time Pitch Monitor See the note you are singing and whether your pitch is sharp or flat on a live graph.

■ Long-Tone Practice Use the waveform, note name, and timer to practice holding a steady voice.

■ Record and Review Record your singing, play it back immediately, rename takes, and search your recording list.

■ Vocal Range Check Measure your lowest and highest notes and see an estimated voice type.

■ Pitch Matching Listen to a reference note and practice holding the same pitch.

■ Scale Practice Sing through a scale one note at a time with reference tones.

■ Sing with a Track Choose an audio file from your device and practice while viewing your pitch and volume.

PIANO PRACTICE Explore the main chords in each key with an on-screen keyboard and finger numbers. Play common progressions, including pop and Canon progressions, or build and save your own.

PRACTICE HISTORY Review practice days, vocal range, and long-tone results over time.

Core practice tools are free. Free recordings are limited to six minutes per take. Premium removes banner ads and unlocks recordings up to 30 minutes, progress charts, and recording export and sharing.

Recordings, imported audio, and practice history stay on your device.

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