Appworthy

miRack

Eurorack modular synth and fx

MIFKI PTY LTD
Download on theApp Store
App Store rating4.8★682 ratings
Price$14.99In-app $0.99–$4.99
Age4+Store age rating
Size377 MBiPhone download
CategoryLifestyle
DeveloperMIFKI PTY LTD

What we found

Full report

Too little checked to say Only 83 reviews read, too few to say.

Money

  • $14.99 to download · in-app purchases $0.99–$4.99 (5 listed). The store doesn’t say how often these bill.
  • If you subscribe through the store, cancel in iPhone Settings → your name → Subscriptions. Deleting the app doesn’t cancel a subscription.

From our automated analysis, 27 Oct 2026.

This analysis describes version 4.55 of the app, analyzed 2026-10-27 .

The store currently lists version 4.55, updated 2026-04-07.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

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.…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

No findings published
This assessment published no findings. That is a statement about what the evidence we had could show, not a clearance of the app.

What reviewers report

83 reviews read · 0 review-based observations

No review-based observation is published in this assessment. That does not establish that reviewers had no problems.

Measurements

5 measured · 3 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Replies to fewer than 1 review in 20
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
No theme reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
90% or more five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Assessed 27 Oct 2026

This analysis describes version 4.55 of the app, analyzed 2026-10-27 .

The store currently lists version 4.55, updated 2026-04-07.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 4.55 · 2026-04-07
CONTROLLER * It is now possible to place additional modules next to Controller module on its row. All modules placed on that row will be present on screen in Controller mode. * Improved color selection for Controller label background/foreground colors. * Rack position and zoom is now correctly saved and restored when entering and exiting Controller mode. APP FEATURES * Imroved handling of external assets, e.g. samples loaded to sampler modules. We fixed a couple of bugs in this area and made it easier to share patches that use external assets. Please read the updated External Assets section in the app manual for details.

Assessment record

Status
Automated analysis
App identifier
mirack
Assessment date
27 Oct 2026
Sources used
2 independent signals: user reviews and the store listing
Reviews read
83
Package examined
No package scan
Human inspection
Not completed

Assessed 2026-10-27 from 83 user reviews and the store listing. We have not scanned the app's package, so nothing on this page was read from inside the app itself.

How we know
Measurement vocabulary
1.4

How this page was produced

Analyzed 2026-10-27 Version analyzed: 4.552 independent signals83 reviews scannedConfidence: HighNot human-reviewedVocabulary v1.13Methodology v1.3
Signals run: user reviews and the store listing. Not yet checked: SDKs in the app package, the app's own on-screen text, the app manifest and the store privacy disclosure.

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.85 ★ · 682 ratings
Version
4.55
Updated
7 Apr 2026
Price
$14.99
Age rating
4+
Size
377 MB
Open in App Store
Developer
MIFKI PTY LTD
Category
Lifestyle
Listing price
$14.99

Purchases the store lists

 What this app sells

From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.

Show 5 more purchases we couldn’t categorise

These are really on sale; we just can’t tell from the name whether they recur.

AUv3 Hosting ModulesTerm not stated$4.99
Controller ModuleTerm not stated$4.99
Large TipTerm not stated$4.99
Medium TipTerm not stated$2.99
Small TipTerm not stated$0.99

Method and limits

What this report can and cannot show

How the automated analysis works

This assessment is produced automatically. Two independent signals are read — user reviews and the store listing — and each candidate finding is filed under the sources that support it.

No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every subscription bills weekly; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.

There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.

Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A hands-on test can confirm or contradict a finding and adds its own measurements; it does not change a measurement row. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

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