Comparison

miRack vs 531sampler

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

Head to head
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
Currently charting
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.

About

531sampler

Features
Read full description

Capture a sound the moment inspiration strikes, shape it, and start playing. 531sampler is a simple, hands-on loop sampler built around 12 pads and a Chaos FX surface. Record from the microphone or bring in audio from 531player, then trim, loop, chop, rearrange, and perform without getting lost in complicated menus. KEY FEATURES • 12 playable sample pads • Record samples up to 45 seconds • Import audio from 531player • Independent TRIM and LOOP ranges • Pitch, time, reverse, volume, pan, and noise reduction • CHOP with equal division or transient-based AUTO detection • Rearrange slices, remove unwanted parts, rebuild a pad, or assign slices across pads • Chaos FX with delay, filter, reverb, and noise • LOOP, SELECT, FREEZE, and ALL STOP performance controls • Record your performance with REC MIX • Save multiple projects on your device Designed for quick ideas, spontaneous sound experiments, and live play. No account, ads, analytics, or tracking. Your recordings and projects remain on your device.

Screenshots

miRack4 screens
531sampler4 screens

Verdict

The call

The clearest difference is price: 531sampler at $2.99 against miRack's $14.99. 531sampler also leads on in-app purchases (none vs 5). miRack's advantage is chart position (#145 vs unranked) and device support (4 vs 1). On update cadence and ads 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

miRack costs $14.99 and 531sampler $2.99 up front. miRack sells 5 one-off in-app purchases. 531sampler asks for nothing beyond the download.

UpkeepUpdate frequency

miRack ships an update weekly, 531sampler every 4 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 6 level
miRack versus 531sampler: the parameters behind the verdict, then further details
ParametermiRack531sampler
Price$14.99$2.99 — better
Rating4.8 (674 ratings) — better—
Positive reviews85.9% of reviews—
Number of ratings674 — better—
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#145 — better—
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS14.0 — better17.0
Further details — not scored
Size359 MB2 MB
Age rating4+4+
DeveloperMIFKI PTY LTDAKIHIKO YOSHIDA

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

531sampler

Not enough reviews yet to summarise bugs or requests.

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
None

531sampler

No in-app purchases

Questions

Is miRack free?
miRack costs $14.99, and also offers in-app purchases.
Is 531sampler free?
531sampler costs $2.99, with no in-app purchases.
Do miRack or 531sampler have ads?
Neither miRack nor 531sampler shows ads.
Which is updated more often, miRack or 531sampler?
miRack ships an update weekly, and 531sampler every 4 days. Most recently, miRack was updated on October 13, 2026 and 531sampler on September 30, 2026.

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