The BLEASS Alpha Synth is a virtual analog polyphonic stereo synthesizer inspired by classic analog synths and enhanced by the BLEASS’ very own musical and technical approach. 
The Alpha is a highly versatile Synthesizer that aims at bringing new ways of designing and playing an infinite constellation of sounds in the iOS music making universe.

The BLEASS Alpha Synth offers many features that all musicians and producers alike will enjoy using in their music making process:

SIMPLE & INTUITIVE INTERFACE: follow the direction of the audio signal : design your own synth sounds by tweaking each panel, from left to right.

VISUALISE YOUR SOUND : thanks to its user-friendly visual filters, sliders, LFOs and envelopes, quickly understand how to design your own presets.

CPU EFFICIENT: how many times have you experienced crackling sounds while making music in the studio or on stage? The BLEASS Alpha Synth aims at offering a smooth & steady experience on iPhones and iPads, whether used as standalone or as an Audio Unit (AUv3) into your favorite DAW.

A UNIQUE MOTION SEQUENCER inspired by modular synthesizers brings a new dimension to your pads, leads and sequences by offering a large amount of rhythmic and expressive modulation possibilities and which can be coupled with the arpeggiator.

UPCOMING UPGRADES AND NEW PRESETS: The BLEASS team has partnered with many artists & sound designers in order to continuously improve the BLEASS experience, so watch out for upcoming updates bringing more features and new presets!

Technical specifications :

Synth Engine :
- Mono / Polyphonic synthesizer
- Built-in arpeggiator with beat sync
- BLEASS’s Motion Sequencer for rhythmic & expressive modulation
- 2 stereo + 1 mono fine-tunable oscillators with variable waveshapes & pulse widths
- Phase control on stereo oscillators for wide stereo
- Unison settings multiplying oscillators per voice
- Cross & ring modulation between oscillators
- Hard sync
- 1 noise source
- 2 LFOs per voice with multiple waveforms & modulation targets
- 2 variable state filters with drive settings
- 3 ADSR with multiple modulation targets
- Vibrato parameters : speed & amount
- Master Detune parameter

Built-in Effects :
- Overdrive
- Bitcrusher
- Tremolo
- Delay with filter and ping-pong effect
- Reverb with length, filter and color control

Misc :
- Built-In Keyboard with pitch-bend and modulation wheel
- Midi compatible
- Audio Unit V3 compatible
- Ableton Link
- Bluetooth Audio
- Midi over Bluetooth
- 150+ factory presets designed by our dear friends Jordan Rudess, Mark Lion, Torley, La Phaze, Nu-Trix, Electronisounds, the Garageband Guide, the Beat Community... (More presets to come along with the upcoming updates!)
- Store your own presets and share it across the Standalone and AUv3

What’s New

Version 1.1

Thank you all for the warm welcome you gave to the BLEASS Alpha Synthesizer release!
We are happy to bring you this update with some more new features that some of you asked for:

- Bluetooth Audio
- Midi over Bluetooth
- Vibrato parameters : speed & amount
- Master Detune parameter
- Double-tap to reset parameters for knobs and sliders
- New presets by Jordan Rudess

Follow BLEASS for more tips and tutorials

Ratings and Reviews

4.9 out of 5
15 Ratings

15 Ratings


Don’t hesitate on this one, just buy it. Seriously.

Can y’all have a meeting with all the other iOS synth developers and let them know how important it is to have a CPU friendly smooth running app? The best sounds in the world don’t mean much if it’s crackling and crashing every other time.

Developer Response ,

ah ah! Well thank you! indeed we focus on high stability and efficiency and so do other developers! but it's not always easy considering many parameters (buffer / daw / iPad specs)...

Chill brother earl ,

Bleass Alpha. A. Delight.

Turning seventy was made a lot easier with Bleass Alpha installed. This thing is deep and it makes me laugh too.
Bleass Alpha is a delight. It makes great sounds which is so important in today’s cluttered up world of soft synths and it is a joy to use. It took to Bitwig like a duck.
Very reasonably priced. Which makes it a real deal.

Developer Response ,

Thank you!

TooMuchTo ,

All the beautiful sounds

I bought the groove box app, the delay & this synth. I have not been disappointed once. The controls are clear and the modulation and oscillator richness is there from stabs to evolving pads and sound effects.

This synth is user immediate and fun.


22.3 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like