Otoo is a streamlined, one-screen groovebox designed for frictionless music production.
Built around an innovative free-form step sequencer, Otoo breaks away from rigid grids, allowing you to place, drag, and stack notes freely across independent rows. Whether you are sketching out ideas using the native built-in engine and sampler or hosting your favorite third-party AUv3 plugins, Otoo delivers a distraction-free environment that prioritizes speed and musical flow.
On iPhone, the interface dynamically scales to give your AUv3 instruments a near-fullscreen home, paired with a compact, highly responsive keyboard for immediate creation on the go.
Otoo also includes Otoo MIDI, an AUv3 MIDI processor version of the app. It brings Otoo’s pattern-based sequencing into compatible AUv3 hosts, where playback follows the host timeline and instruments are routed as MIDI Out destinations instead of audio instruments.
Distraction-Free Workflow
• The single-screen layout keeps your sequence, arrangement and mixer visible at all times so you never have to dive into menus.
• A free-form step sequencer lets you place, drag, and stack notes across any row without rigid instrument or track restrictions.
• Step editing mode gives you precise control over note length, velocity, and timing subdivisions.
• The gesture-driven mixer allows for quick volume adjustments, muting, and soloing directly from the main grid.
• 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
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
• Export performances as perfect loops
• MIDI export
• Supported time signatures: 4/4, 3/4, 4/4T and sequencer swing.
I watched the JAKOB HAQ video on this app about a month ago and was really curious about it. Just picked it up and instantly made a track. So much fun. The Rompler it’s such a great way just to get instant instantly I just watched the video on the sound test room about this and it gave me some more ideas. My only request would be to have an easy way to export stems. As of now, I’m just muting everything and exporting one track at a time. watching the sound test room now and noticing that this can do live stuff too that would be super cool if the tape recorder do the stems to be recorded separately. But honestly this little universe is going to be so much fun for me. And iPhone too! What a steal.
Otoo for Me and You
TimFromTheBorder
An extremely accessible groovebox — the perfect introduction to sequencing for new musicians, and a fun and capable toy for everyone else. Another hit from BeepStreet!
Loving it BUT …
RykThekreator
Audio export, length problem!My original BPM for a 4 x Part audio export, was 105 BPM.I imported the audio file to have that 16 beat, 4 part audio sync exactly as 4 bars, inside of AUM, with any other program requiring perfect sync.The playback of the file is the entire sample, along with another 10-15% of the beginning, before the Loop occurs.ThIs exact same problem happens at 120 BPM.Yes, all of the tagging options for, the Loop, have been tried and did not make any difference.Different and the same BPM values have been used in each of the programs as well. No matter. The 4 part audio sample is still created with that extra amount of audio.2 alternate solutions until this issue is resolved:- creating the entire song, with Otoø. (The main thing that I _LOVE_ about Otoø is how quickly you’re able to scratch out basic ideas, within it alone!)- importing the exported sample into an audio editor to perfectly slice off the extra audio error.Now … how many users may be comfortable with doing that? 🤨 (I’m fine but I have a lot if experience there.)
Otoo MIDI is here: a new AUv3 MIDI processor extension for using Otoo’s sequencer inside compatible hosts.
Version 1.4
The developer, BeepStreet, 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.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Jaroslaw Jacek
Size
66.9 MB
Category
Music
Compatibility
Requires iOS 15.6 or later.
iPhone Requires iOS 15.6 or later.
iPad Requires iPadOS 15.6 or later.
iPod touch Requires iOS 15.6 or later.
Mac Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
