iPad Screenshots


Apple’s AudioUnit v3, Inter-App Audio connectivity, AudioBus 3, Korg’s WIST and Apple’s CoreMIDI are all supported.

Furthermore, iSEM is fully compatible with the Audio Unit Extension format. It can be directly launched in any Audio Unit host applications.

iSEM is a recreation of the classic 1974 Oberheim SEM (Synthesizer Expander Module), one of the world's first self-contained synthesizer modules and the first to bear the "Oberheim Electronics" name.

The Oberheim SEM was made famous by artists and bands such as Lyle Mays, Jan Hammer, Joseph Zawinul, Supertramp, 808 State, Vince Clarke and Depeche Mode.

Based on the TAE® technology found in our Oberheim SEM V software, iSEM brings back the sound and special characteristics of this iconic synth in an sonically accurate and expanded touch-based emulation.

What you can do with the iSEM?

The iSEM is a powerful instrument capable of producing a wide range of warm analog sounds. 

Reproducing the unique SEM architecture, with its oscillator sync, characteristic filter shape and specific envelope response, the iSEM is able to generate the fat basses that have made the Oberheim brand so popular. Thanks to its simple and clever PW and pitch modulations, it is also very easy to produce moving and lively leads.

Its remarkable 12 dB/oct multimode filter is a real blast from the past, becoming an awesome weapon in the context of current electronic music. This unique module can instantly tailor your sound to fat, crisp, or spectral textures with access to all the nuances in between…

iSEM comes with over 500 sounds that you can browse through and play. You can also easily create your own sounds with the easy to use interface.

Play iSEM's numerous sounds from the iPad keyboard or control iSEM from a MIDI keyboard or other app via CoreMIDI and integrate it into your studio or live performance.

If you are an owner of of the Arturia SEM V software on your Mac or PC, you can even import and export sounds between your laptop or desktop SEM V and iSEM.

All the original parameters of the Oberheim SEM: two oscillators, each offering sawtooth wave and variable-width pulse wave with PWM, sine wave LFO, 12dB/oct multi-mode Filter with low-pass, high-pass, band-pass and notch, two ADS envelope generators.

Added functionalities: New LFO, Noise, Sub oscillator, Arpeggiator, Portamento.
Polyphonic playability
8 Voice Programmer module allows each voice to have different settings
HOLD and CHORD modes.
Virtual Analog Chorus.
Virtual Analog Delay.
Full user MIDI mapping of panel controls.
Supports WIST sync to other iOS devices.
Support of AudioUnit Extension, AudioBus 3 and Apple’s Inter-App Audio connectivity.

The Oberheim™ name used here is a trademark of the Gibson Guitar Corp. The trademark is used by license to Arturia.

What’s New

Version 1.5

- Updates and bugfixes for iOS 13
- Upgrade AudioBus to Version 3
- Improved Startup Time

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

Wastelander3000 ,

Yeah, it's a 5 star app

Great synth app. Would love to have a full screen mode sans keyboard for midi keyboard and bigger knobs that's all.
Thanks team!

Z5h ,


This sounds like the real deal.
Give away your hardware 4 op FM synths and get this.

Five stars even without Audiobus integration (pending).

Puking Pixels ,

Sounds Awesome But....

Really cool app, and sounds more like an actual SEM than I was expecting it to, but there's loads of room for improvement. It runs fine on its own, but it's extremely prone to crashing when it's slaved to an external clock. The arpeggiator also gets stuck notes almost every time you hit stop, and the "all notes off" shortcut in Pro Tools does nothing. It's extremely annoying. The weird part is that iSEM is receiving and generating MIDI messages during playback even with all MIDI channels muted, and no other apps running on my iPad. It could be that somewhere the MIDI that iSEM is generating is being fed back into itself although I have no idea how. I'd like to be able to disable only the MIDI out to see but sadly you can only completely disable an entire MIDI device, both in and out. So until you fix these problems that make your app barely usable when it should be amazing, you can be thankful that I was merciful enough to give you 2 stars.


84.2 MB

Requires iOS 12.1 or later. Compatible with iPad.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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