Otoo
Otoo

This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.

Logo of Otoo

Otoo

Break free from rigid grids with a tactile, single-screen workflow designed for flow. Create, layer, and perform your ideas using built-in sounds or your favorite AUv3 instruments—all in one beautiful, mobile-first interface.

Key Figures

Downloads

0

User Rating

1.0/5

Total Ratings

0

Publisher

Jaroslaw Jacek

Category

Music

Locales

1

Latest Version

1.1

Size

60.7 MB

First Released

Mar 20, 2026
Features

Designed for the Flow State

Otoo strips away the complexity of traditional desktop software, giving you a tactile, free-form playground to sketch professional beats and melodies whenever inspiration strikes.

Organic Sequencing

Ditch the rigid rows. Place and stack notes freely on a fluid grid to create evolving patterns and chords that sound human, not robotic.

Pro Plugin Integration

Bring your favorite AUv3 instruments into a refined mobile interface. Experience full-screen control and power tailored specifically for your iPhone.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

Otoo - Interface of Otoo music app showing a circular step sequencer and a blue touch keyboard for beat making

Interface of Otoo music app showing a circular step sequencer and a blue touch keyboard for beat making

Otoo - Interface of the Otoo app showing a grid of available AUv3 music instruments and a virtual keyboard

Interface of the Otoo app showing a grid of available AUv3 music instruments and a virtual keyboard

Otoo - Otoo app screen displaying a professional AUv3 synthesizer with a compact touch keyboard and various sound control knobs

Otoo app screen displaying a professional AUv3 synthesizer with a compact touch keyboard and various sound control knobs

Otoo - The Otoo app audio sampler interface featuring a recorded waveform and a circular note keyboard for music production

The Otoo app audio sampler interface featuring a recorded waveform and a circular note keyboard for music production

Otoo - Otoo app interface with a colorful circular step sequencer grid for music creation

Otoo app interface with a colorful circular step sequencer grid for music creation

Description

Otoo is a playful instrument for making beats and melodies, designed to feel easy from the first tap yet deep enough to keep growing with you. Its free-form step sequencer lets you place, drag, and stack notes freely instead of locking everything into rigid rows. Use the built-in sounds, sampler, or your favorite AUv3 instruments in seconds, then take ideas further with hands-on performance controls and sequencer effects. On iPhone, Otoo makes AUv3 instruments feel at home with a large instrument view and a compact keyboard for immediate playing. Beautifully simple workflow
 • Free-form step sequencer with instruments not tied to fixed rows
 • Single-screen workflow with sequence, song structure, and mixer always visible
 • Tap or drag notes onto the grid to build beats and melodies
 • Stack notes to create chords 
• Per-step control of length, subdivision, and velocity • 4 rows on iPhone and 5 on iPad, with multiple instruments available in each row at different steps 
• 2-octave keyboard for playing and learning real notes • Multi-gesture mixer for switching instruments, muting, soloing, and adjusting volume Sounds and plug-ins 
• Up to 8 instruments per project
 • Built-in sounds and sampler
 • Use any installed AUv3 instruments in a large, near-fullscreen view with a compact keyboard 
• Up to 2 AUv3 effects per instrument
 • Sampler with instant key-by-key recording and chromatic mapping Patterns to full songs
 • Build songs from simple patterns
 • Draggable loop markers for quick arrangement changes Performance mode
 • Live sequencer and audio effects such as reverse, beat repeat, randomize, swing, triplet, tape, and more
 • Play the pattern like a keyboard by tapping steps directly Other features • Main output with built-in level protection • Automatic metronome when recording live into empty patterns • Export patterns or full songs as WAV or MP3 for easy sharing

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This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.