iSEM Synthesizer User Reviews

Customer Experience

Positive experience73.7% of reviews
Neutral9.1% of reviews
Negative experience17.3% of reviews

~ Based on 243 written reviews from the US App Store.

What users say

Is iSEM Synthesizer Safe?

iSEM Synthesizer appears mostly safe based on user ratings. AppsHunter Safety Score for iSEM Synthesizer is 80/100.

This assessment is based on 61 user ratings, with an App Store average of 4.1/5.

Safety Analysis

75.0% of ratings point to a safe experience
8.3% of ratings suggest some concerns
16.7% of ratings point to a risky experience

~ Based on 60 App Store ratings for iSEM Synthesizer.

Is iSEM Synthesizer Legit?

iSEM Synthesizer appears to be a legitimate app. AppsHunter Legitimacy Score for iSEM Synthesizer is 80/100.

Based on 80 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

iSem Audio Unit loads again in Cub3 - thanks!

Works! Brief try March 2026 all seems good, back to 5 stars, lovely little synth. Issues previously…Well, it’s been a year since I notified Arturia of this exact issue using Cubasis 3.4.1, and sadly we are at that point where iSem seems to be forgotten. 4 years since a revision. PullingUseless as an AU in Cubasis essentially - every other Audio Unit instrument, and I tried a dozen, all invoked fine, saved their state on shutdown of Cub3, etc. Other weirdness includes the fascia of the previous instrument you had up, remaining in place, it all seems connected to iSem not loading up? Over to you Arturia, sorry, iSem’s dead in the water for me as it stands.
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Leider derzeit völlig veraltet, und damit unbrauchbar

Habe die App schon seit vielen Jahren in Gebrauch, und immer gerne verwendet.
Leider als AUV3 Plugin unter Logic nicht mehr verwendbar…
Sehr schade!

auV3? Yes! Good Synth? No!

I usually go to the pad presets first when I get a music app. These were really not good. They all sounded the same and were completely uninspiring. When I started to create my own, I quickly realized why they all sound the same. The only variation I could find was the speed and length of the detuning - to the point where the thing was barely musical. The leads were much better and as an Oberheim port, they should be.
Congrats that this is the only Arturia product which seems to be AU compatible.
They should stop embarrassing themselves on iOS and stick to Hardware and VST. I love my MicroFreak! Especially with firmware 5!
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Это Шедевр !

Очень жду магазин звуков и наборов новых
Импорт новых звуков синхронизация тоже нужны …
Спасибо 😊!!!

iSem Audio Unit won’t load in Cubasis 3.6.1

Well, it’s been a year since I notified Arturia of this exact issue using Cubasis 3.4.1, and sadly we are at that point where iSem seems to be forgotten. 4 years since a revision. Pulling up Cubasis 3.6.1 (latest Jan 2024) on an iPad Pro M1 12.9 inch, with 2Tb SSD and lots of room on there, and so on, trying to add an instance of the iSem Audio Unit, results in it possibly seeming to work, but close down Cub3 and restart, and there’s no way to get iSem to show its face/fascia. Also, add a second instance/track of the iSem AUv3, and it never shows its face not even once. Any midi track info obvs does not play, and the fact the fascia won;t load once you duck out of Cubasis 3 even temporarily, and return, is indicative of no state being preserved etc. Useless as an AU in Cubasis essentially - every other Audio Unit instrument, and I tried a dozen, all invoked fine, saved their state on shutdown of Cub3, etc. Other weirdness includes the fascia of the previous instrument you had up, remaining in place, it all seems connected to iSem not loading up? Over to you Arturia, sorry, iSem’s dead in the water for me as it stands.
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Love this synth but…

This is by far my favourite iOS synth, however it’s starting to crash now as AUV3. Any updates on the horizon?

Crashes constantly.

Constant crashes in Cubasis 3.Real pity,it used to be great.

Fantastic sounding analogue synth, one of a kind

Superb, if occasionally unstable, unique analog synth. Perhaps my favourite iOS synth, the filters are perfect, it has this classic bronze sem sound. Please keep this updated, it’s one of the best on iOS.

Hourargh!

Ouff! Anything else just isn’t the Sem.. .. please do not the cat ..

Big Sound

Love this softsynth. Gut please let me know how to Switch Mono/Poly if used as AU Extension in AUM or GarageBand

Almost unusable in cubasis 3

Dunno what happened but the auv3 is a crash fest in cubasis 3 these days. Sometimes it doesn’t reload, sometimes it just goes blank middle of a project and the interface and sound disappear out of the blue. Shame was one of my favourites but unusable with lack of support and last update 3 years ago. Comon arturia sure you can put 1 guy to look after mobile apps.
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Ottimo e versatile, ma i preset preferiti?

Adoro il SEM anche nella sua versione PC della Arturia e qui ho ritrovato la stessa versatilità e solidità, i suoni di basso sono semplicemente stupendi, difficile trovare di meglio a 11 euro. Però c’è un problema. Vorrei poter migliorare il workflow per i live. Servirebbe un modo per poter salvare e ordinare i propri preset preferiti in funzione di una performance live. Attualmente la soluzione sta nel ricreare i preset da 0 e salvarli tra i personali, ma capite bene che è parecchio scomodo. Implementate un a funzione preferiti come nelle versioni della V collection su pc please! Do 4 stelle solo per questo.
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Superbe synthétiseur

Excellent, apparemment Arturia a cessé de développer sur iOS. Les synthétiseurs iOS ne sont plus référencés sur le site. Très dommage

A gem

This synth sound really great. Arturia knows how to recreate classic sound like nobody else.

Arturia comeback to iOS.

Great Sound. Easy to learn.

Nice sound for a virtual synth. Can’t produce that genuine analog flavour, but nothing digital can. For what it is, it’s one of the best I’ve heard.

Easy to create your own patches. The included ones mostly sound like junk, more quantity than quality. Would rather have had a handful of really nice presets instead.

One negative is the save/enter key is just below the delete/backspace, do I accidentally overwrote some of my patches when making a new one with a new name. Drives me nuts but It is what it is!
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Sounds Amazing

Sounds like a dream, I hope it is not forgotten and the software goes out of date.

Sustain problem as auv3

Using iSEM in a daw like Camelot the cc64 sustain function isn’t received. It seems that the sustain pedal produces some little noises but not hold the note.

unter 15.2 kaputt

defekt, spielt immer eine Sägezahnwelle, egal welches Preset, sogar wenn Master aus

L’experience Arturia

La société Française met son savoir-faire dans ses app IOS. Ça sonne, c’est efficace, pas trop gourmand en cpu.
SVP, Arturia, continuez à développer sur IOS, et à maintenir vos application. J’ attends avec impatience le support AUV3 de vos synthés virtuels, et mes étoiles passeront directement à 5 pour les notes App Store. Merci.
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Fantastic app, but...

This is one of the first synthesizer apps I got for my iPad. I have been an Oberheim fan for decades, and owned several of their hardware instruments.
This is an amazing recreation of the Oberheim Synthesizer Expander Module. The sound is fantastic, the effects and arpeggiator are very useful additions, and the programming of individual voice variations is fantastic. I LOVE THIS APP.
Why only 3 stars? Because Arturia support for this app is practically nonexistent. There is no way to contact or request tech support other than to go to the tech support web page and fill out a form, which includes a “serial number” and an “unlock code”, neither of which exist for iOS apps, which means the form can NOT be filled out.
I have had a problem with the iSEM AUv3 in AUM, for years. Once it was fixed by offloading the app and reinstalling it. That no longer works. If I were to be able to make contact with Arturia support and get this problem fixed, I would change this review to 5 stars immediately.
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