# Midiflow Motion (Audiobus) vs Nulltrack

The clearest difference is review sentiment: Nulltrack at 100% against Midiflow Motion (Audiobus)'s 40%. Nulltrack also leads on update cadence (every 9 days vs every 11 months). Midiflow Motion (Audiobus)'s advantage is price ($1.99 vs $7.99) and device support (3 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

Midiflow Motion (Audiobus) costs $1.99 and Nulltrack $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Midiflow Motion (Audiobus) ships an update every 11 months, Nulltrack every 9 days. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Midiflow Motion (Audiobus) | Nulltrack |
| --- | --- | --- |
| Price | **$1.99** | $7.99 |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/midiflow-motion-audiobus/id1107254489/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 5 MB | 17 MB |
| Requires iOS | **10.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Doerr](https://appshunter.io/developer/622204117) | [DECTET LLC](https://appshunter.io/developer/6780079930) |

## What reviewers say

### Midiflow Motion (Audiobus)

[App page](https://appshunter.io/ios/app/midiflow-motion-audiobus/id1107254489)

Control effect parameters in other music apps by moving your device. Fine-tune MIDI commands like volume or modulation to your desired motion range for expressive control. Supports multiple parameters and apps simultaneously through Audiobus 3.

**Highlights:** Control effect parameters with device motion, Use device rotation (X/Y axis), Adjust motion and output value ranges, Send any MIDI command (pitch-bend, CC, custom), Control multiple parameters/apps simultaneously, Integrates with Audiobus 3

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

**In-app purchases:** none


### Nulltrack

[App page](https://appshunter.io/ios/app/nulltrack/id6780079928)

This mobile digital audio workstation offers a unique, grid-based approach to music creation, inspired by classic trackers. It includes built-in synths, a sampler, extensive modulation options, and mixing tools.

**Highlights:** AUv3 plugin support, Two built-in synthesizers, Built-in sampler, Extensive modulation options, Mixing features with track faders, Groove tables for swing/playback, Pattern locking to scales

**In-app purchases:** none


## Frequently asked questions

### Is Midiflow Motion (Audiobus) free?

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

### Is Nulltrack free?

Nulltrack costs $7.99, with no in-app purchases.

### Do Midiflow Motion (Audiobus) or Nulltrack have ads?

Neither Midiflow Motion (Audiobus) nor Nulltrack shows ads.

### Which is updated more often, Midiflow Motion (Audiobus) or Nulltrack?

Midiflow Motion (Audiobus) ships an update every 11 months, and Nulltrack every 9 days. Most recently, Midiflow Motion (Audiobus) was updated on September 30, 2026 and Nulltrack on October 2, 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.*