# MIDIx vs HeadStack

The clearest difference is rating: MIDIx at 5.0 against HeadStack's 4.8. HeadStack's advantage is price ($7.99 vs $8.99). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

MIDIx costs $8.99 and HeadStack $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MIDIx holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

MIDIx ships an update every 8 days, HeadStack every 9 days. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | MIDIx | HeadStack |
| --- | --- | --- |
| Price | $8.99 | **$7.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/midix-physics-midi-generator/id6758278999/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/headstack/id6781611375/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 9 days |
| Monetization | Paid | Paid |
| Size | 17 MB | 25 MB |
| Requires iOS | 15.6 | **14** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fingerlab](https://appshunter.io/developer/412786610) | [4Pockets.com](https://appshunter.io/developer/370131860) |

## What reviewers say

### MIDIx

[App page](https://appshunter.io/ios/app/midix-physics-midi-generator/id6758278999)

This app uses physics simulations to generate expressive MIDI data. Control parameters through object movement or create generative note sequences. It's a unique tool for musicians seeking organic and evolving soundscapes.

**Highlights:** Physics-driven MIDI CC generation, Generative MIDI note sequencing, AUv3 plugin support, Customizable physics scenes, Built-in scale library, Real-time modulation, Universal app for iOS and Mac

**Features:** Vision Pro support

**In-app purchases:** none


### HeadStack

[App page](https://appshunter.io/ios/app/headstack/id6781611375)

This app offers a virtual tape loop with 8 independently configurable playback heads for creating diverse echo effects. It captures the warmth of classic tape machines while offering modern flexibility for sound design, from vintage echoes to evolving ambient textures.

**Highlights:** Multi-head tape engine with 8 playback heads, Vintage tape character and imperfections, Independent control for each playback head, Rotating head wheel for dynamic effects, Granular harmony engine for pitch-shifted textures, Per-head modulation and creative feedback routing, Diffusion and smearing for atmospheric washes

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

**In-app purchases:** none


## Frequently asked questions

### Is MIDIx free?

MIDIx costs $8.99, with no in-app purchases.

### Is HeadStack free?

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

### Which has better reviews, MIDIx or HeadStack?

MIDIx is rated higher. MIDIx averages 5.0 out of 5 from 2 ratings, while HeadStack averages 4.8 from 5 ratings.

### Do MIDIx or HeadStack have ads?

Neither MIDIx nor HeadStack shows ads.

### Which is updated more often, MIDIx or HeadStack?

MIDIx ships an update every 8 days, and HeadStack every 9 days. Most recently, MIDIx was updated on September 24, 2026 and HeadStack on October 1, 2026.

---

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