miRack vs Skym
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
miRack
This app offers a comprehensive Eurorack-style modular synthesizer environment for creating custom synths, audio/MIDI effects, and controlling other applications. It features a vast library of modules and integrates with hardware and software for flexible music production and live performance.
- Polyphonic Eurorack-style modular environment
- Over 800 third-party modules
- AUv3 plugin hosting
- Multi-channel audio input/output
- MIDI input/output with clock sync
- Ableton Link support
- iCloud patch syncing
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miRack is a polyphonic Eurorack-style modular environment. It aims to provide user experience and audio quality close to those of the real Eurorack hardware. miRack can be used to build custom synthesizers, audio and MIDI effects, control other apps and equipment, as a playground to explore and learn modular synths, and for live performances. miRack is also available on macOS, including Audio Unit and VST plugins. * Comes with more than 800 modules created by third-party developers and adapted for mobile devices by miRack team. New modules are added regularly. * Includes AUv3 plugin. Can work as an instrument, audio effect or MIDI processor. Supports parameter automation to record and automate changes of almost any virtual module control. * AUv3 hosting capabilities (in-app purchase). Incorporate any AUv3 instrument, effect or MIDI effect plugins into your patches. * Controller module (in-app purchase) allows to design AUv3 user interface for your patch. * Multi-channel audio input and output (in both standalone and AUv3 modes), with full support for Expert Sleepers audio interface modules to integrate with hardware Eurorack equipment. * MIDI input and output, including MIDI clock sync, and MIDI learn function. Automate and control your patch, or control other software and hardware instruments with powerful sequencer modules. * Ableton Link support to synchronise with other music software on the same device or over network. * iCloud support to sync patches between iOS and macOS app versions. * Visit patchstorage.com/platform/mirack for inspiration and to share your patches.
Skym
Control your Ableton devices with expressive touch gestures. This MIDI controller app lets you manipulate four parameters simultaneously, offering instant variability and interest to your sounds. It requires Ableton on macOS and does not generate sound on its own.
- Touch control for Ableton devices
- Control 4 parameters simultaneously
- X, Y, Speed, and Gate parameters
- USB or Bluetooth connection
- Free starter Ableton project included
- Expressive sound design
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Touch control for your Ableton devices. Skym is a MIDI controller app that allows you to control 4 parameters of your Ableton devices at once. Simply download the app, and install our Ableton script on Mac, and you can connect over USB or Bluetooth to perform expressive sound design. Our free starter Ableton project has some sounds to get you up and running. Skym sends 4 parameters at once. X, Y, Speed (how fast your touch is moving), and Gate (flips on and off with touch). These parameters automatically map to macros 1, 2, 3, and 4 respectively. Combining these layers of control on synths, samplers, effects, gives you access to instant variability and interest in your sounds. Note Skym is a controller and not a sound generator, so the app does not make sound on its own. We only support connection and integration with Ableton on Mac. Mac OS must be 10.11 or later Ableton must be 11.0.0 or later
Screenshots
Verdict
The clearest difference is rating: miRack at 4.8 against Skym's 4.3. miRack also leads on update cadence (weekly vs monthly) and ratings volume (674 vs 22). Skym's advantage is price ($7.99 vs $14.99). On review sentiment, 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
miRack costs $14.99 and Skym $7.99 up front. miRack sells 5 one-off in-app purchases and Skym sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
miRack holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: miRack has 674 ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 86% of miRack's written reviews are positive against 80% of Skym's.
miRack ships an update weekly, Skym monthly. The most recent releases landed on October 15, 2026 and September 24, 2026 respectively.
| Parameter | miRack | Skym |
|---|---|---|
| Price | $14.99 | $7.99 — better |
| Rating | 4.8 (674 ratings) — better | 4.3 (22 ratings) |
| Positive reviews | 85.9% of reviews — better | 80.0% of reviews |
| Number of ratings | 674 — better | 22 |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 359 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | MIFKI PTY LTD | ResGuide LLC |
Customer experience
miRack
Skym
Bugs and requests
miRack
Reported bugs
3 issues- Knob controls sometimes become unresponsive
- Saving and loading patches can be unreliable
- Compatibility issues with older iPad models
Requested features
5 requests- Add polyphonic support
- Implement undo/redo functionality
- Integrate with popular DAWs and audio apps
- Provide more comprehensive module library
- Add preset management and sharing options
Skym
Not enough reviews yet to summarise bugs or requests.
In-app purchases
miRack
- Small Tip$0.99
- Medium Tip$2.99
- Large Tip$4.99
Show 2 moreShow fewer
- AUv3 Hosting Modules$4.99
- Controller Module$4.99
Skym
- Heat Map$4.99
- Warp Speed$9.99
- Pulse Cell$9.99
Show 1 moreShow fewer
- Life Flower$9.99









