# MIDI Check vs ab vortEx X

The clearest difference is review sentiment: ab vortEx X at 88% against MIDI Check's 0%. ab vortEx X also leads on rating (4.6 vs 4.0). MIDI Check's advantage is price ($1.99 vs $12.99) and update cadence (every 4 days vs every 2 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

MIDI Check costs $1.99 and ab vortEx X $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ab vortEx X holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 0% of MIDI Check's written reviews are positive against 88% of ab vortEx X's.

MIDI Check ships an update every 4 days, ab vortEx X every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MIDI Check | ab vortEx X |
| --- | --- | --- |
| Price | **$1.99** | $12.99 |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/midi-check-diagnose-tool/id1235759917/reviews) | **[4.6 (8 ratings)](https://appshunter.io/ios/app/ab-vortex-x/id1660941137/reviews)** |
| Number of ratings | 4 | **8** |
| Positive reviews | 0.0% of reviews | **87.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Paid | Paid |
| Size | 35 MB | 7 MB |
| Requires iOS | **10.3** | 11 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DejaWorks LTD](https://appshunter.io/developer/1051410230) | [Alejandro Cabrera Zuniga](https://appshunter.io/developer/1660382836) |

## What reviewers say

### MIDI Check

[App page](https://appshunter.io/ios/app/midi-check-diagnose-tool/id1235759917)

Diagnose and troubleshoot MIDI connections on your devices. View active connections, monitor incoming messages, and filter unwanted data. Record MIDI messages in the background with a clear, intuitive interface.

**Highlights:** Detect active MIDI connections, View incoming MIDI messages, Send test MIDI notes and control messages, Filter MIDI channels and messages, Filter MIDI System Exclusive messages, Record MIDI messages in background mode

**Features:** macOS Compatibility

**In-app purchases:** none


### ab vortEx X

[App page](https://appshunter.io/ios/app/ab-vortex-x/id1660941137)

This app is a stereo-only abstract spacetime designer for creating unique reverberations. It functions as an AUv3 plugin for compatible iOS hosts or as a standalone application, offering control over sound reflection spread.

**Highlights:** Stereo-only spatial audio algorithms, AUv3 plugin compatibility, Standalone application mode, Touch screen interface, Control over sound reflection spread, Space, Time, Viscosity, Volumes controls

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MIDI Check free?

MIDI Check costs $1.99, with no in-app purchases.

### Is ab vortEx X free?

ab vortEx X costs $12.99, with no in-app purchases.

### Which has better reviews, MIDI Check or ab vortEx X?

ab vortEx X is rated higher. MIDI Check averages 4.0 out of 5 from 4 ratings, while ab vortEx X averages 4.6 from 8 ratings.

### Do MIDI Check or ab vortEx X have ads?

Neither MIDI Check nor ab vortEx X shows ads.

### Which is updated more often, MIDI Check or ab vortEx X?

MIDI Check ships an update every 4 days, and ab vortEx X every 2 months. Most recently, MIDI Check was updated on November 2, 2026 and ab vortEx X on November 3, 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.*