MIDI Check vs SimplComp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDI Check
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.
- 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
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*Diagnose The Problem & Find the Solution* Current Features: + See/detect, hardware/virtual active MIDI connections. + See all incoming messages. + Send test notes on/off and control messages. + MIDI Channel filter: Eliminate messages comes from unwanted MIDI channels. + MIDI Message filter: Eliminate unwanted messages (e.g. Note on, Note off, Pitch wheel etc.) + MIDI System Exclusive filter: Eliminate MIDI Clock and many other unwanted MIDI messages. + MIDI Delta-Time Added: See the time spent between messages + Record Incoming MIDI messages in background mode + 100% vectoriel cristal clear gorgeous user interface. + Slide the glass through the face, activate the desired filter with a gesture. **NOTE** Yamaha Bluetooth MD-BT01 users -> According to Yamaha user manual; all MIDI related application should be closed before bluetooth midi connection. Run the MIDI Check after connection established. If not you'll not be able to see the Yamaha midi connection on the app. This is not an application's issue. Because Yamaha use own BT protocol. Upcoming Features: - Music keyboard improvement. - Custom preset message send possibility.
SimplComp
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Introduction SimpleComp is very simple general purpose compressor that’s easy to use and very light on CPU. Sometimes you just need some basic dynamics processing that doesn’t add “character”, or that relies on sophisticated techniques or performance expensive DSP. SimplComp was designed for those times! SimpleComp is an AUv3 effects plugin that can run standalone, or in any AUv3 compatible host such as Logic Pro, GarageBand or AUM. SimpleComp currently runs on iPadOS / iOS (iPad & iPhone) and macOS (Intel & Silicon) and is available as a Universal Purchase from the Apple App Store. If you’re planning on using SimpleComp on Mac / desktop, please ensure that your favourite DAW / host supports AUv3 (not just AU). Parameters ACTIVE - toggles the effect on or off. IN - sets the level of the incoming signal. Typically you would leave this as 0dB, i.e unity gain. The meters to the left of the panel show the level of the incoming signal. COMP - sets the compression threshold. Note that unlike many compressor plugins, the threshold is reduced as you turn up the control, so as you turn it up, you get more compression effect. The bar meter below this control will give an indication of how much over the threshold the input signal is. RATIO - sets the compression ratio. A higher ratio results in a more noticeable “squashing” effect on the signal. OUT - sets the level of the output signal. You may need to adjust this is you wish to manually make up the gain lost by the compression effect, e.g. when AUTO is off (see below). ATK - sets the attack time of the compressor. REL - sets the release time of the compressor. AUTO - toggles automatic makes gain. When switched on, SimplComp will automatically adjust the gain to compensate for the gain reduction that occurs when compression is applied. This is calculated using the compression threshold and ratio. MIX - sets the balance between the compressed and original / dry signal. This allows SimplComp to be used for parallel compression. Factory Presets There are a few factory presets included to get you going. The overall compression will be dependent on the level of the input signal so you will need to select an appropriate factory preset as a starting point, then adjust the COMP parameter up or down for more or less compression indicated by the bar meter below the control.
Screenshots
Verdict
The clearest difference is iOS requirement: MIDI Check at 10.3 against SimplComp's 13.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
MIDI Check costs $1.99 and SimplComp $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MIDI Check | SimplComp |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.3 — better | 13.0 |
| Further details — not scored | ||
| Size | 35 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | DejaWorks LTD | Rob Jackson |
In-app purchases
MIDI Check
No in-app purchases
SimplComp
No in-app purchases









