MIDI Check vs SimpLoop
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
Read full descriptionHide full description
*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.
SimpLoop
This audio effect plugin offers a straightforward approach to live looping, inspired by classic hardware pedals. It allows for simple one-button operation or advanced MIDI control for dynamic performances. Export your creations as WAV files.
- One-button looping
- MIDI controller support
- Reverse and half-speed toggles
- Multiply function for loop extension
- Auto-record option
- Variable record fade time
- Export loops as WAV
Read full descriptionHide full description
SimpLoop - A (Fairly) Simple Looper Plugin (AUv3) SimpLoop is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview - SimpLoop is a fairly simple looper What does "fairly simple" mean? Well, SimpLoop can be configured to be a very simple one button looper - tap to record a loop, tap again to play your loop, then tap to stop and clear the loop. Alternatively, you could assign 6 button functions and two expression controllers to a MIDI hardware controller for an extremely dynamic live looping setup. To help understand what SimpLoop is, it might be easier to cover what SimpLoop is not... SimpLoop does not have any form of tempo sync capability, or support for multiple sync'd loop tracks or A/B "verse" / "chorus" sections, etc. SimpLoop also does not have an undo function or support for importing audio files (*), and it does not remember the recorded loop between sessions. There are several more advanced looper apps that do those sort of things, but if you're new to looping, or you just need a compact and basic looper to include in your setup, SimpLoop was designed for you! (*) You can export your recorded loops as .WAV files. SimpLoop was also designed for live, "on the fly" looping, and could almost be considered "old-school" now, as it draws inspiration from hardware guitar looping pedals that started becoming popular in the early 2000's. As a live looping "veteran" myself, I wanted to create a looper that included some of my favourite hardware pedal features, plus a few things I wished that those pedals had back in the day! As well as basic looping functionality with a 60 second maximum loop time, SimpLoop includes reverse and half-speed toggles, and a multiply function that doubles the current loop length. For example, you could record a one-bar rhythmic loop, then tap Multiply twice to create a four-bar loop made up of 4 repeats of your original recording. Additional features include an auto-record option, variable record fade time for seamless loops (great for creating drones!) as well as different mode settings to determine how the loop, stop and clear commands work. For maximum hands-free looping enjoyment, I recommend using SimpLoop with some kind of MIDI controller that can send MIDI CCs via buttons / switches or knobs / expression pedal inputs. For more info and support please visit: www.waverley-instruments.com/robjackson
Screenshots
Verdict
MIDI Check and SimpLoop both sit at 4.0 stars, but that hides the real split: 60% of SimpLoop's written reviews are positive against 0% of MIDI Check's. MIDI Check's advantage is update cadence (every 4 days vs every 2 weeks) and price ($1.99 vs $2.99). On rating, ratings volume, ads and in-app purchases 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 SimpLoop $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.0 for MIDI Check against 4.0 for SimpLoop. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews are what separate them: 0% of MIDI Check's written reviews are positive against 60% of SimpLoop's.
MIDI Check ships an update every 4 days, SimpLoop every 2 weeks. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.
| Parameter | MIDI Check | SimpLoop |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 4.0 (4 ratings) | 4.0 (4 ratings) |
| Positive reviews | 0.0% of reviews | 60.0% of reviews — better |
| Number of ratings | 4 | 4 |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.3 — better | 13.0 |
| Further details — not scored | ||
| Size | 35 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | DejaWorks LTD | Rob Jackson |
Customer experience
MIDI Check
SimpLoop
In-app purchases
MIDI Check
No in-app purchases
SimpLoop
No in-app purchases









