• I keep coming back after looking around. ★★★★★
    This still, for my money, one of the best granular synth apps on iOS. It’s very stable playing in the background. You can make some REALLY unearthly sound tapestries with iDensity! (After all, they made the iVCS app!)
    By Eriptron for Version 4.4.4
  • Amazed ★★★★★
    Definitely one of the most intriguing music / sound creation apps for ios. the learning curve is there but once u get it WOW running six samples simultaneously with the ability to do just about anything to them lends to infinite creation. i love being able to to touch to scrub the waveform. a real joy ✨✨✨✨✨
    By highlikeafly for Version 4.4.4
  • Surper Grains ★★★★★
    A superb app for graular textures. Hardware synths are an absolute joy to use, however when it comes to granular synthesis, the options are very bare. Apesoft has given us the answer, all praises due! As another reviewer stated, I too desired a midi note on/off option, and then i found the app iPulsaret -bingo! If your seeking to take a plunge into granular synthesis i highly recommend both of these apps.
    By Oatsnmaple for Version 4.4.4
  • Excellent synth for ambient scapes! 🧚🏼‍♀️ ★★★★★
    When in standalone mode (or IAA), you get 6 windows to load your audio files. When you load up like 2 or more audio files that’s when the magic begins to happen and you can create really unique ambient scapes. I think it might be possible to “play” it somehow as an instrument, but I find it works best with longer audio files creating continuous motion. It’s pretty much perfect in what it does and how it does it. Beautiful UI and very pleasant controls. When you load it in your dDAW as AUv3, you just get a single window. Well you can run multiple instances in AUv3, so you can basically have more of them, and save them all, along with your project. Still, I prefer to use IAA mode because you just have all the audio files in front of you to tweak, and adjust individually to get the “unified” sound. NOTE: when you tap in the top right corner, you’ll see an icon labeled “Samplers in presets”. Make sure this is enabled if you want to load your saved project as it were when you saved it. Otherwise it’ll load preset of the tweaks, but leave whatever audio samples you got currently loaded. Both options have their place, but can be confusing if you don’t know about this. This is definitely a solid 5-star app. Only one request, please make presets alphabetical. There’s a way to rearrange them, but there’s really no point in doing this extra management when we can just group them “naturally” in alphabetical order. Also please load the existing project name into the Save As. It helps *a lot* when saving successively. Oh, and the same request for ApeMatrix please!! Love your unique apps, thanks for making them!
    By GadgetMojo for Version 4.1
  • Awesome ★★★★★
    This app is as good as any vst i have for granular fun.
    By CrystalAwareness for Version 4.1
  • Crazy sounds ★★★★★
    Giving 4 stars because there’s no way that I can see to sync the au3 transport to host. You have to start and stop it manually or it just keeps going, which is quite annoying. Otherwise, a good take on granular synthesis. Ok, so now the transport sync seems to work, never did in the past. Thanks for fixing!
    By Dddduncan for Version 4.1
  • One word ★★★★★
    There is only one word that describes an experience with this excellent app: WOW!
    By Defraserabq for Version 4
  • A Favorite just got WAY Cooler! ★★★★★
    iDensity was one of the first iOS audio apps I bought several years ago. It showed me the incredible possibilities there are with granular sound. Over the years it just keeps getting better! Now, with iDensity 4 we have an AU host similar to this developers apeMatrix host matrix, but built right into iDensity. How insane is that?! Huge fan of this app and this developer. Highly Recommended 🙂
    By skiphunt for Version 4
  • Great app, buuut ... ★★★★★
    I can't get the preset management working properly. Every time I load a new preset, it maintains the samples from the last preset. I followed the instructions from the manual to reload the factory presets, but I still have my own samples from the last thing I did loaded. Still a great app, even with the missing preset bit, just not working at the best of its capability.
    By GregRocksSoHard for Version 3.1
  • Pure genius ★★★★★
    Pure genius...changed my life
    By 2 DEUCES for Version 3.1



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 + Six Remote Audio Units Host support + 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

+ Ready for iOS 15

App Details

  • Version 4.4.4
  • Created by apeSoft
  • Sold by Alessandro Petrolati
  • Released on September 16, 2011
  • File Size: 17 MB
  • Price: $7.99
  • universal This app is designed for both iPhone and iPad


by Stuart Kilbride (Red Sky Lullaby)