• Audio Patchbay baby! ★★★★★
    The audio patchbay takes this to a new level! Glad to see the devs are still pushing the limits of an already great app.
    By Zjenji for Version 3.1
  • Perfect granulator ★★★★★
    So that's two lengthy, well-considered reviews of this tool that were eaten by iTunes. No time for details now, so if you are into granulation and appreciate a full featured granulator with an intuitive but by no means simple interface, fork over the 8 bucks now. Extra tip: Use Studiomux to route the six tracks in iDensity into six tracks of your favorite DAW--in my case, ableton. Beautiful.
    By Sjdjdudmc for Version 2.7
  • Best Granular Sound Design Tool I've Used on iPad ★★★★★
    Ape Soft also makes iPulsaret which as of now I do not own. The only reason I don't own it is because I have iDensity. This is the granular app to have on your apple device. This app is powerful. You've got 6 streams of granular synthesis which can all run at the same time if you'd like. You can have a stream looping while pitch shifted with delay while another stream is frozen on a particular grain with delay and reverb and still have 4 more granular streams left. You can load your own samples into each stream, add fx and tinker for hours. You can load the app in Audiobus or AUM as an effect. In AUM each of the 6 streams can be used to live process the incoming audio. You can export the audio to AudioShare if you'd like. This app is up to date, well thought out and very powerful.
    By Me knows for Version 2.7
  • Wonderful Sound Manipulator ★★★★★
    Great for long evolving sounds, soundscapes, manipulating sounds, textural drones and just general fun. Everything this developer does is great.
    By Cianoc123 for Version 2.7
  • I am ape for the Ape! ★★★★★
    Fantastic updates to an already fantastic app! Recommended!
    By Ben Efitofadoubt for Version 2.5.5
  • Simply the best. ★★★★★
    The best app there is for layered soundscapes, drones, glitchy textures, or lush ambience. A must for all experimental iOS musicians. New update is, if I could only find a midi controller with 200 knobs and faders to take full tactile control of the depth of this app. Sensational.
    By Utica Crib for Version 2.5
  • Sound Manglers Rejoice ★★★★★
    Load up some tracks or pipe in some audio and be prepared to lose track of time as you explore what this app is capable of. Really enjoyable playing with multiple tracks. You can get a lot going on in just one screen and being able to zoom in on the wave form works well too.
    By polarpaul for Version 2.3.5
  • Awesome👈🏼 ★★★★★
    Thanks so much to this update! I don't care I paid for the full version, it was worth it!🙂 This app is very very cool if you need and want the fun of creating your own audio sound scape! It's pretty detailed for sure. To have the ability to capture "found sound" with my phone, manipulate it, then mix into my other audio…well, this app is the cats meow! In fact, I think I'll go right now and see just what I can do with that meow!😼
    By breaktime for Version 2.3.1
  • Update is what's Up-date ★★★★★
    Absolutely love the new features and improved UI. I've now incorporated this app into my main live performance setup. Remarkably stable, fluid, and all-around a joy to use.
    By Selectedacre for Version 2.0.1
  • iDensity is an unbelievable app. Brilliant and thoughtfully done. ★★★★★
    A stunning update: having four tracks is a pleasure. Absolutely stellar sound, no unwanted pops and glitches, infinite sustain. You can run live audio through all four channels and let it breathe granular pulses and delays into your sounds. I'm a huge fan. I have a Microgranny 2.1 (the hardware equivalent) and this eclipses it. Future of music in an app.
    By coloringpad for Version 2.0.1
  • Brilliant Update ★★★★★
    This has been an essential sound design app and now the option of running multiple tracks makes it even more so. So much control and so many changing sonic variations are possible. This developer continues to innovate and improve on an impressive portfolio of synthesis tools.
    By telepunken for Version 2.0.1
  • Granular Synthesis Heaven!!! ★★★★★
    The 4 file stream addition really adds a new dimension to what was already a very interesting app. I've been wishing for a iOS replacement to my all time favorite granular synthesis program Granulab with it's 8 simultaneous streams. I think iDensity just quelled that thirst. 😉
    By Philowerx for Version 2.0
  • awesome grains ★★★★★
    sounds amazing . i love what this synth can do!
    By rcon303 for Version 1.8
  • Impressive Granular Synth ★★★★★
    I am impressed by this powerful app. By far this app exceeded my expectations. I have tried many granular synth app and this is definitely the best. Congratulations! Would love to see a built in wave-editor (mainly to cut samples) and the possibility to determine the length of the loop.
    By Randagiofunk for Version 1.7
  • Brilliant for Ambient ★★★★★
    This is my go-to app for creating ambient drones and effects. iDensity lets you manipulate your sample audio directly by running your finger over the waveform, which is a great way to interact with the sample. There's no other app for iOS that does what iDensity can do.
    By hypersleep for Version 1.4.2
  • One of the best iPad music apps. Period. ★★★★★
    Wonderful sounding, solid as a rock. All iPad apps should strive for this kind of quality. I can't wait for Ipulsaret to also get on the 'bus! On a side note: I wish Chris Carlson could team up with these developers to get his wonderful "Borderlands" granular app running like this!
    By computer musician for Version 1.4
  • A great instrument and dedicated developers ★★★★★
    Thank you, guys!
    By alarmed7781 for Version 1.4
  • Totally amazing ★★★★★
    This is what all professional audio apps should strive to be as professional as. Truly superb.
    By big spy for Version 1.3.3
  • Very good! ★★★★★
    This app is perfect for mangling beats to smithereens, would love to be able to chop samples, hopefully in an update
    By TadbitOmusiC for Version 1.2.4
  • Nice! ★★★★★
    This thing is Sick! I'm still checking it out, so far so good. I can see myself using the audio copy alot.
    By Daath7 for Version 1.2.4
  • iDensity Does it Again! ★★★★★
    As far as it goes, this is by far the best granular DSP app for altering sound files and optionally copy/pasting them into other apps. It's one of the very few sound mangling apps that can produce 48k files, making it suitable for film scoring/sound design. Results can be subtle & clean or fetchingly horrendous. I've run iDensity on iPad 2 and gotten great results. I suspect it's very CPU intensive to do it's thing. I've had no crashing problems at all so far.
    By vurnt22 for Version 1.2



iDensity is rated as a Killer App by Apps4iDevices. iDensity is a new real-time software designed for asynchronous sound file granulation, a genuine granular playground able to generate a wide range of usual and not so usual effects: time/pitch shifting, time/pitch jittering, intricate textures, grain fountain/pulverizer, recording and manipulation of buffers, complex scrub pad exploration, dynamic envelope shape and many more. iDensity for iPad will give you all the basic and advanced tools you need to manipulate sound in subtle and surprising ways. All these features are packed in an optimized, user-friendly, visually sharp interface that is easy to access when fast-improvising live, composing in a studio, or sound designing at home and on the go! You will have the power, freedom, and flexibility to create like never before – on your iPad! Control and shape grains, anytime, anywhere with Density for iPad. + Six Granular Streams + Full Instr and FX AudioUnit (AUv3) support + High Density Granulation + Sampled and Live granulation + In-Stream Echo and RM post Fx + Multichannels Audiobus Inter-App Audio support + MIDI, Virtual Midi and Network + Sharing common audio files via iTunes, Dropbox AudioCopy etc... + Snapshots Presets Morphing Pad + Post Fx chain: Parametric and High Shelf Filters, Classic Reverb and Dynamics Processor + Scrub Recording and playback + etc.

Release Notes

+ Audiobus 3 SDK updated
+ Audiobus New MIDI Receiver Port
+ New Audio Patchbay Matrix
+ New Stereo Delay Sync BPM
+ New Sampling Rate Setting (up to 96 kHz)
+ New Quick View for the Presets Manager, simplify the Presets navigation while playing the Keyboard
+ New AUv3/App Presets sharing
+ AUv3: Fixed Sporadic Crash when deleting some instances
+ Live/Restore Last Sample Fixed
+ Added Inter-App Audio Transport
+ Live Button Long Tap Gesture to show Actions Menù
+ New Direct Gain for Matrix Passthrough Audio

App Details

  • Version 3.1
  • Created by apeSoft
  • Sold by Alessandro Petrolati
  • Released on September 16, 2011
  • File Size: 20 MB
  • Price: $7.99
  • universal This app is designed for both iPhone and iPad


by Stuart Kilbride (Red Sky Lullaby)