OP-Studio
Music
$11.99 · Designed for iPad. Not verified for macOS.
OP Studio is the MIDI companion app built for OP-1 and OP-1 Field users who want more control over their recordings and performances.
Connect via USB-C. Record, quantize, perform.
QUANTIZER (!)
Record notes live from your OP, then snap them to a grid with surgical precision. Adjust quantization strength (0–100%), swing amount, and
threshold so grooves stay human even after correction. Edit notes in the piano roll, trim recordings, and send back as a single shot or continuous
loop.
112 PATTERNS
Browse a curated library of drum patterns and melodic sequences across 23 genre categories: Four on the Floor, Trap, Bossa Nova, Techno, Drum &
Bass, Afrobeats, TB-303 Acid, Euclidean rhythms, and more.
Each pattern shows a dot-grid preview so you can see the rhythm before you hear it. Customize per-step velocity, note, and ratchet (up to 4
subdivisions with velocity decay). Export any pattern as a MIDI file.
SEQUENCER
Build 16-step sequences using your OP keyboard in learn mode — play a note and the app auto-advances to the next step. Chord-aware: strum
multiple notes within 50 ms and they land as a chord on a single step. Supports variable timing for free-rhythm sequences.
GROOVE
Compose multi-track arrangements with up to 8 tracks, polyrhythmic step counts (4 to 64 steps), per-track rate scaling (0.5× to 4×), accent track,
and global swing. Save your groove directly to the pattern library.
PERFORM MODE
Available in every module: tap PERFORM and hold any key on your OP keyboard. The app transposes your sequence or pattern chromatically in real
time — live, on the fly, zero latency.
TEMPO SYNC
Locks to your OP-1's MIDI Clock signal automatically. Tap MANUAL to override BPM at any time.
DESIGNED FOR THE HARDWARE
Aluminum silver background, SF Mono labels, uppercase everything. OP Studio is built to feel like a natural extension of the OP — not a
generic iOS app.
Works with iPhone and iPad. Requires iOS 17 or later. Connects via USB-C (USB Class-Compliant MIDI). Bluetooth LE MIDI support coming in a future
update.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update improves overall stability and fixes rare crashes that could occur during playback. Recording and quantization now lock more precisely to the OP-1's clock for tighter, more accurate timing, and sharing MIDI exports on iPad works reliably again.
The developer, Lorenz Erik Wittjen, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lorenz Erik Wittjen
- Size
- 34.9 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Blacktext Studios
