Comparison

Mersenne vs miRack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mersenne

This app is an AUv3-compatible synthesizer designed to create bell-like metallic sounds. It combines FM synthesis, a noise generator, and a resonator for crafting clear tones and complex metallic textures.

Highlights
  • AUv3-compatible synthesizer
  • Dual FM synthesis modules
  • Noise generator
  • Resonator
  • Metallic sound design
  • Bell-like tones
Features
Read full description

Mersenne is an AUv3-compatible synthesizer that combines two FM synthesis modules, a noise generator, and a resonator to create bell-like metallic sounds. It is specifically designed for crafting both clear tones and complex textures with a distinctive metallic grit, making it an ideal tool for those deeply exploring metallic sound design. For more detailed information about the product, please visit the website. The website offers detailed product descriptions, manuals and videos, as well as important notices. https://icegear.net/

About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

Mersenne4 screens
miRack4 screens

Verdict

The call

The clearest difference is in-app purchases: Mersenne at none against miRack's 5. Mersenne also leads on price ($8.00 vs $14.99) and iOS requirement (12.0 vs 14.0). miRack's advantage is update cadence (weekly vs monthly) and ratings volume (683 vs 28). On rating, review sentiment, ads 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

CostPrice · In-app purchases · Ads · Monetization

Mersenne costs $8.00 and miRack $14.99 up front. miRack sells 5 one-off in-app purchases. Mersenne asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

miRack holds the better App Store score, 4.8 against 4.7. That said, the two scores are not equally well evidenced: miRack has 683 ratings behind it against 28, so its average is the more settled of the two. Written reviews complicate that: 88% of Mersenne's written reviews are positive against 86% of miRack's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Mersenne ships an update monthly, miRack weekly. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

Scorecard6 real differences · 4 level
Mersenne versus miRack: the parameters behind the verdict, then further details
ParameterMersennemiRack
Price$8.00 — better$14.99
Rating4.7 (28 ratings)4.8 (683 ratings) — better
Positive reviews87.5% of reviews — better85.9% of reviews
Number of ratings28683 — better
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better14.0
Further details — not scored
Size11 MB359 MB
Age rating4+4+
DevelopericeWorks, Inc.MIFKI PTY LTD

Customer experience

Mersenne

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews40 reviews
Positive87.5%
Neutral7.5%
Negative5.0%

miRack

All ratings674 ratings
Positive96.4%
Neutral1.8%
Negative1.8%
Written reviews227 reviews
Positive85.9%
Neutral6.2%
Negative7.9%

Bugs and requests

Mersenne

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Mersenne

No in-app purchases

5 purchases

miRack

One-time5
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99
Show 2 more
  • AUv3 Hosting Modules$4.99
  • Controller Module$4.99

Questions

Is Mersenne free?
Mersenne costs $8.00, with no in-app purchases.
Is miRack free?
miRack costs $14.99, and also offers in-app purchases.
Which has better reviews, Mersenne or miRack?
miRack is rated higher. Mersenne averages 4.7 out of 5 from 28 ratings, while miRack averages 4.8 from 683 ratings.
Do Mersenne or miRack have ads?
Neither Mersenne nor miRack shows ads.
Which is updated more often, Mersenne or miRack?
Mersenne ships an update monthly, and miRack weekly. Most recently, Mersenne was updated on November 2, 2026 and miRack on November 11, 2026.

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