Tardigrain is a granular synthesiser that runs standalone or as an AU plugin. Sounds are created by taking smaller fragments of a sample and playing them back in a non linear fashion, with settings for grain size, direction, step size and more. Process the sound further through effects like reverb, wave shaper and sample crush. Tardigrain supports connections with AudioCopy, AudioBus, Inter App Audio and AUv3. Plus all audio parameters can be modulated by midi, as AU parameters and by aftertouch on the build in keyboard.

+++ Audiobus and Inter App Audio
+++ AUv3
+++ Core Midi, Inter App Audio MIDI and AUv3 MIDI
+++ Factory presets
+++ Record custom samples or import using AudioCopy
+++ Save and load state and samples
+++ Full modulation of audio parameters

What’s New

Version 1.0.23

+++ Updating AudioBus, fixes crashes loading Inter App Audio in iOS 12.4 and up.

Ratings and Reviews

4.6 out of 5
50 Ratings

50 Ratings

Oh_W3ll ,

Smooooth Touch Update on this Fantastic Synth

Tardigrain has been a home run from the get go. The synth engine makes it incredibly easy to get a wide range of sustained sounds out of virtually any sound material. The UI is also brilliant: beautiful, uncluttered, powerful. The touch keyboard + chords layout is just wonderful - I honestly wish I could use it with other iOS synths.

The issue this update fixes - touch response problems with the edges, often making the controls finicky - was an annoyance that I really didn’t mind putting up with given how amazing this app is. Until this fix, I had no idea just how much better this would make the app feel. This is an unexpectedly awesome quality of life improvement to an already awesome app.

Kudos for figuring out how to make a second home run out of tardigrain.

Eriptron ,

Interestingly subtle❣️

Update: The developer quickly fixed the inability topick the last waveform on the side pull-over panel as the IAA icon covers it on the IAA transport control panel. Now I can also just do a single touch to pull out the side bar. 👍

It’s still annoying having part of the audiogram covered. Just make it a callapsible pull out menu. The UI will look cleaner too.

Oh, I forgot. I still can’t get any audio through tardigrain used as an AU.

Now off for some more ‘sonic seasonings’ tardigrain style❣️
While some interesting sounds are to be had with the tardigrain app, there are some serious UI design issues. First, you can’t pick the last waveform on the side pull-over panel as the IAA icon covers it on the IAA transport control panel. Both the control icon panel and the IAA transport panel overlay the audiogram, which is your working area. Both of those groups of icons, ideally, should be collapsible pullout panels like the one they have, but to be able to ‘just touch’ the expansion icon to expand for access, like many other sound/synth/audio apps developers do.

The pull-over panel on the right, as it is now, can take anywhere from 2-3 touch/pulls to as many as 8-10 tries on my iPad Pro on iOS 11. A real pain. I think the strength of tardigrain may lie in the flexibility of the sound source. Trying to use tardigrain as an AU, so far, as soon as I engage it I lose all sound no matter what I do.

Matreve ,

Near perfect.

An easy 5 stars app. This is a brilliant, great sounding and cool looking app. The controls, while maybe not instantly intuitive, give a lot of control over how the sound is shaped. It has one of the best designed keyboards I've seen in all iOS apps allowing assignment of modulators on x and y axis. The app feels a touch like Samplr, one of my favorite apps ever. Even some animations in the app look similar. The tuning / pitch shifting is brilliant. I wish there was a better documentation for this app as the on screen guide is not enough.


erik sigth
44.5 MB

Requires iOS 8.0 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.

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