# Midiflow Adapter (Audiobus) vs Accelerating Metronome

The clearest difference is rating: Accelerating Metronome at 5.0 against Midiflow Adapter (Audiobus)'s 4.2. Accelerating Metronome also leads on update cadence (weekly vs every 12 months) and review sentiment (100% vs 75%). Midiflow Adapter (Audiobus)'s advantage is price ($1.99 vs $4.99) and device support (3 vs 1). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

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

Accelerating Metronome holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 75% of Midiflow Adapter (Audiobus)'s written reviews are positive against 100% of Accelerating Metronome's.

Midiflow Adapter (Audiobus) ships an update every 12 months, Accelerating Metronome weekly. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Midiflow Adapter (Audiobus) | Accelerating Metronome |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/midiflow-adapter-audiobus/id1225817367/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/accelerating-metronome/id6798083469/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 5 MB | 41 MB |
| Requires iOS | **10.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Doerr](https://appshunter.io/developer/622204117) | [Steve Ball](https://appshunter.io/developer/647160368) |

## What reviewers say

### Midiflow Adapter (Audiobus)

[App page](https://appshunter.io/ios/app/midiflow-adapter-audiobus/id1225817367)

This app bridges the gap for music applications that only support Core MIDI, enabling them to integrate with Audiobus 3. It creates virtual MIDI ports, allowing older music apps to send and receive MIDI data within the Audiobus 3 ecosystem.

**Highlights:** Creates permanent virtual MIDI ports, Supports up to 10 receiving apps, Supports up to 10 sending apps, Allows multiple instances in Audiobus 3, Translates between Core MIDI and Audiobus 3, Works with apps allowing MIDI port selection

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

**In-app purchases:** none


### Accelerating Metronome

[App page](https://appshunter.io/ios/app/accelerating-metronome/id6798083469)

This metronome gradually accelerates tempo during practice sessions, logging every minute played. It features customizable practice ramps, peak speed tracking, and visual progress reports to help musicians build consistency.

**Highlights:** Gradual tempo acceleration, Practice logging, Customizable practice ramps, Peak speed tracking, Visualized practice progress, Tap tempo functionality, Tuning reference

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

**In-app purchases:** none


## Frequently asked questions

### Is Midiflow Adapter (Audiobus) free?

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

### Is Accelerating Metronome free?

Accelerating Metronome costs $4.99, with no in-app purchases.

### Which has better reviews, Midiflow Adapter (Audiobus) or Accelerating Metronome?

Accelerating Metronome is rated higher. Midiflow Adapter (Audiobus) averages 4.2 out of 5 from 5 ratings, while Accelerating Metronome averages 5.0 from 3 ratings.

### Do Midiflow Adapter (Audiobus) or Accelerating Metronome have ads?

Neither Midiflow Adapter (Audiobus) nor Accelerating Metronome shows ads.

### Which is updated more often, Midiflow Adapter (Audiobus) or Accelerating Metronome?

Midiflow Adapter (Audiobus) ships an update every 12 months, and Accelerating Metronome weekly. Most recently, Midiflow Adapter (Audiobus) was updated on October 15, 2026 and Accelerating Metronome on October 17, 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.*