Impaktor 4+

The drum synthesizer


    • $4.99



* "Without doubt the most powerful and genuinely useful percussion app on the App Store right now" Computer Music
* Reached the #1 paid music app in 5 countries
* SonicTouch ( gold award

Impaktor is a drum synthesizer with a vast sonic palette, that turns any surface into a playable percussion instrument.

You just slap your desk like you would a real drum. The real acoustical impulses from the built-in microphone are used as an excitation source for advanced sound modules that simulates behavior of membranes, cymbals, metallophones or strings. This makes Impaktor a highly responsive and expressive instrument.

With semi-modular architecture and several types of synthesis, Impaktor can produce a wide range of tones, from acoustic, like Tabla, Djembe, Marimba, Cymbals, Metal bars to electronic or industrial sounds.

Enjoy the most realistic virtual drumming experience available for mobile devices!

* The app requires headphones to prevent accoustic feedback. To minimize latency use wired models.


- Synthesis: physical modeling, frequency modulation, noise shaping
- Semi-modular architecture; 2 modules with configurable routing
- 2 modulation sources: velocity and lfo-envelope. Almost every parameter can be modulated
- Multimode filter, harmonic exciter and several types of amplifiers
- Over 90 presets available, more coming soon
- No samples used
- Ultra low latency 


- 6 tracks audio recorder
- True 3d panning
- Auto-quantization with configurable time-signature
- Reverb and Delay effects
- Audio-copy and wave export

What’s New

Version 1.6

- Fixed: distorted sound while working at 48kHz

Ratings and Reviews

3.6 out of 5
47 Ratings

47 Ratings

Miltonwillis ,

Excellent app

Just got it today but I can already see the possibilities with it! I just hope background audio is introduced and maybe some midi control for playing with other apps. Great app so far though.

Chinchilla Wafers ,

Works great with a drum trigger pad

I’m getting full joy with this app, and a Roland PD-5 rubber drum pad, like for V-drums. It’s very playable and responsive, like an instrument. Great range and nuance to sound depending on how you play. It is interesting how it works, it seems to kind of transform the actual sound of the trigger, rather than playing samples.

My setup is using an old iPad 4 to run this exclusively and am using a previously useless $30 irig Stomp pedal, to get the trigger into Impaktor. The irig stomp is intended for plugging a guitar into the headset mic jack, and it murders the tone, but here, it serves great for just getting the pad trigger into the iPad, without having to use an audio interface.

If I could have one thing for this app, it would be midi clock sync, to use the internal looper to get layers going, with the quantize.

Great, unique app. Highly recommended for drummers and percussionists looking to work in some great electronic sounds, like the Synare did in bands like Joy Division and the Cure.

keV2001 ,

Buyer beware. App is broken and developer is non-responsive to emails.

This app states it supports InterAp audio. It does not. Will not load in any Interapp audio program apparently This is a well-known issue and if you search the Internet there are multiple posts in different audio forums discussing this. Developer does not respond to any of them. Tried direct emailing developer several times but no reply. Developer needs to either update description to not supporting inter app app audio or remove from App Store as this is strictly why I purchased the app and I would like my money back. I would be careful about buying any other products from this developer as they do not offer any support.

App Privacy

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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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