
EP-PatchStudio
Multisample and kit editor
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Free
In-App Purchases
About
EP-PatchStudio builds sample kits and multisamples for Teenage Engineering's EP-series hardware, then sends them to your device over USB. Now on iPhone and iPad.
If you own an EP-133 K.O. II, EP-1320 or EP-40 Riddim, you know the squeeze: great sounds, a tiny screen and a slow road from a sample on your computer to a pad on your sampler. This app is the shortcut. Import audio, trim it, build a kit and load it onto the hardware.
WHAT YOU CAN DO
- Import WAV and AIFF from Files, iCloud Drive or straight from another app via the share sheet
- Trim, fade and set the start and end of every sample by touch
- Build full kits, lay out pads and tune each one (max 8 samples - EP device limitation)
- Create multisamples for the EP-40 Riddim, mapped across the keyboard
- Send finished kits to your device over USB MIDI
- Export kits and backups to Files, AirDrop or your DAW
WORKS WITH
- EP-133 K.O. II
- EP-1320 Medieval
- EP-40 Riddim
Multisamples are EP-40 Riddim only.
No hardware to hand? You can still build and edit everything, then export it for later. Plug in over USB when you are ready to send.
FREE AND PRO
The Sample Editor is free. Building kits, trimming samples and exporting all work without paying anything. Pro unlocks sending kits straight to your device, as a one-off in-app purchase. Buy once, no subscription. Already bought EP-PatchStudio on Mac or Windows? Enter your licence key to unlock the same here.
A NOTE FROM ME
I am a solo developer and a sampler nerd. I built EP-PatchStudio because I wanted grown-up software for these little machines, and I keep improving it based on what the community asks for. If something is missing or broken, tell me.
Not affiliated with or endorsed by Teenage Engineering AB.
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What's New in EP
1.4.2
September 1, 2026
Time-stretch now works in playback and stem export. A pad stretched to the project tempo, in BPM or BAR mode, plays and exports at that speed with its pitch unchanged. Loops play continuously across bars and scene changes instead of restarting at every bar. Loops-only factory projects now show up and play in the Project Viewer, and loop waveforms line up with what you hear. Also fixed: full-mix export clipping when several groups peak at once, Ableton export missing latched loops, front-trimmed samples playing past their trim end, and rare crashes are now caught and reported on the next launch.
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In-App Purchases
$24.99
EP-PatchStudio Pro
Device files, backups, projects and library









