# Midiflow Randomizer (Audiobus) vs Stellr

The clearest difference is rating: Stellr at 3.4 against Midiflow Randomizer (Audiobus)'s 3.0. Stellr also leads on review sentiment (67% vs 50%). Midiflow Randomizer (Audiobus)'s advantage is update cadence (every 11 months vs every 40 months) and price ($1.99 vs $4.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Midiflow Randomizer (Audiobus) costs $1.99 and Stellr $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stellr holds the better App Store score, 3.4 against 3.0. Both are backed by a comparable volume of ratings — 4 and 9 respectively. Written reviews point the same way: 50% of Midiflow Randomizer (Audiobus)'s written reviews are positive against 67% of Stellr's.

Midiflow Randomizer (Audiobus) ships an update every 11 months, Stellr every 40 months. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Midiflow Randomizer (Audiobus) | Stellr |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/midiflow-randomizer-audiobus/id1107244758/reviews) | **[3.4 (9 ratings)](https://appshunter.io/ios/app/stellr/id1448350913/reviews)** |
| Number of ratings | 4 | **9** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 40 months |
| Monetization | Paid | Paid |
| Size | 5 MB | 26 MB |
| Requires iOS | **10.2** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Doerr](https://appshunter.io/developer/622204117) | [BACKPULLVER SOFTWARE LTD OOD](https://appshunter.io/developer/1035157788) |

## What reviewers say

### Midiflow Randomizer (Audiobus)

[App page](https://appshunter.io/ios/app/midiflow-randomizer-audiobus/id1107244758)

This MIDI effect app generates random variations in notes, velocities, and timing for musical sequences. It allows users to specify the range of randomization and can be used with other MIDI tools for harmonious results. Requires Audiobus 3.

**Highlights:** Randomize notes, Randomize note velocities, Randomize timing, Specify variation range, Use multiple instances, Requires Audiobus 3

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Stellr

[App page](https://appshunter.io/ios/app/stellr/id1448350913)

Create deep, ethereal ambiance with a pitch-shifter, dual delays, and reverb. Explore sonic possibilities with 15 presets, randomization, and parameter automation. Enhance your music with a new dimension of sound.

**Highlights:** Pitch shifter with fine-tuning or semitone snap, Two independent delays for complex feedback, LFO modulation and various reverb types, Pre-gain and dry/wet level control, Audio Unit Extension, Audiobus, Inter-App Audio support, 15 built-in presets with import/export, Realtime frequency spectrum visualizer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Midiflow Randomizer (Audiobus) free?

Midiflow Randomizer (Audiobus) costs $1.99, with no in-app purchases.

### Is Stellr free?

Stellr costs $4.99, with no in-app purchases.

### Which has better reviews, Midiflow Randomizer (Audiobus) or Stellr?

Stellr is rated higher. Midiflow Randomizer (Audiobus) averages 3.0 out of 5 from 4 ratings, while Stellr averages 3.4 from 9 ratings.

### Do Midiflow Randomizer (Audiobus) or Stellr have ads?

Neither Midiflow Randomizer (Audiobus) nor Stellr shows ads.

### Which is updated more often, Midiflow Randomizer (Audiobus) or Stellr?

Midiflow Randomizer (Audiobus) ships an update every 11 months, and Stellr every 40 months. Most recently, Midiflow Randomizer (Audiobus) was updated on October 24, 2026 and Stellr on October 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*