iDensity vs vibro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iDensity
This app offers real-time asynchronous sound file granulation, enabling users to create a wide array of audio effects. It provides tools for time/pitch manipulation, texture generation, buffer recording, and complex sound exploration. Designed for musicians and sound designers, it offers flexibility for live performance, studio composition, and on-the-go sound design.
- Real-time sound granulation
- Time/pitch shifting and jittering
- Texture generation
- Buffer recording and manipulation
- Scrub pad exploration
- Dynamic envelope shaping
- Audio Unit (AUv3) support
Read full descriptionHide full description
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.
vibro
Create a dynamic light show that pulses to the beat of your music, transforming any space into a club atmosphere. It's also a versatile tool for games, fitness tracking, and even creative spy communication.
- Music-synced light effects
- Create club atmosphere
- Dance battle tool
- Improve dancing skills
- Endurance competition game
- Pulse impulse check
- Spy communication device
Read full descriptionHide full description
With this app you can easily create an atmosphere of a night club wherever you are. Just place your gadget near sound columns (or put on some music on your gadget) and the light will twinkle in time with the music. Deaf can dance! Even those who can not hear the music, can feel its rhythm and dance! You can use the app to hold an open-air event or a dance battle with your friends. Use it at home being on your own trying to improve your dancing skills before going to the club. Intensify the effect using the app on several gadgets. But it’s not only a vibro-sensitive stroboscope. Use your imagination! You can hold an endurance competition to find out how long you can hold gadget at arm distance without shaking. Check your pulse impulse (putting gadget on chest). Use this app to scare away wild animals into the wild or as a device for spy communication.
Screenshots
Verdict
The clearest difference is price: vibro at Free against iDensity's $9.99. vibro also leads on iOS requirement (9.3 vs 15.6). iDensity's advantage is update cadence (monthly vs every 97 months) and review sentiment (86% vs 75%). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
vibro is free to download; iDensity costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iDensity ships an update monthly, vibro every 97 months. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.
| Parameter | iDensity | vibro |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.9 (48 ratings) — better | — |
| Positive reviews | 85.7% of reviews — better | 75.0% of reviews |
| Number of ratings | 48 — better | — |
| Update frequency | Monthly — better | Every 97 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 9.3 — better |
| Further details — not scored | ||
| Size | 16 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | apeSoft | ALEXANDER SKALOV |
Customer experience
iDensity
vibro
Bugs and requests
iDensity
Reported bugs
10 issues- Occasional crashes (historically)
- AudioBus issues (historically)
- Preset management not working correctly (historically)
- Transport sync not working (historically)
- GUI bugs (e.g., maximizing a strand)
Show 5 moreShow fewer
- Craquements, grésillements (cracking, crackling)
- X/Y snapshot morphing not working on iPad 1
- Sample import issues (cut off)
- Unable to record from microphone (historically)
- App crashes upon recording (historically)
Requested features
10 requests- Independent MIDI note control over pitch for each stream
- Alphabetical preset sorting
- Load existing project name into 'Save As'
- Multi-port output for AUM/Ape Matrix
- Built-in wave-editor for sample cutting
Show 5 moreShow fewer
- Ability to determine loop length
- Motion sequencer or assignable LFOs
- Sync AU3 transport to host (historically)
- Add MIDI note and channel select as modifier/controller
- Dark mode option
vibro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
iDensity
No in-app purchases
vibro
No in-app purchases









