Delay Wiz vs Music Check
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Delay Wiz
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Using a distance, score tempo in bpm and the room temperature Delay Wiz gives you following results: - speed of sound - resulting delay in ms, with playback function - delay as score duration With the score duration information you can evaluate timing related inaccuracies when playing with musicians in large setups without proper monitoring. Using the listen function Delay Wiz plays two audio clicks with the calculated delay. You can measure and input distances with your built-in camera. If supported you can even use the built-in Lidar sensor for exact distances measuring
Music Check
This app helps you compose and modify melodies using a unique 3-step process. Explore a vast number of possibilities with chord and rhythm selections. Load SoundFonts, record with a MIDI keyboard, and control playback with a simulated turntable.
- Prisma Composer for melody creation
- Chord and rhythm pattern selection
- Note variation control
- Save and load MIDI projects
- MIDI keyboard recording
- Simulated turntable playback control
- SF2 and DLS SoundFont loading
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MusicCheck is more than a normal midi controller, with our unique Prism Composer you can systematically create or modify a melody in a 3-step process: 1. Specify chords allowed in your melody. 2. Choose a rhythmic pattern for your melody. 3. Select groups of notes you want to vary. MusicCheck runs through all possibilities, for example with 10 chords and 6 groups there are a million different possibilities!!!!!! We use a flexible prism coloured graph representation of all the different possibilities. You can further configure the possible variations by restricting groups to certain chords. Save and load Midi projects and extract the different chords with the Prism-Composer or connect your Midi Keyboard and record new songs. This mobile Midi-studio is able to load SF2 and DLS SoundFonts or you can start right away with some built-in instruments.
Screenshots
Verdict
The clearest difference is price: Music Check at Free against Delay Wiz's $1.99. Music Check also leads on update cadence (every 2 weeks vs every 9 months) and iOS requirement (9.0 vs 17.6). Delay Wiz's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Music Check is free to download; Delay Wiz costs $1.99 up front. Music Check sells 1 one-off in-app purchase. Delay Wiz asks for nothing beyond the download.
Delay Wiz ships an update every 9 months, Music Check every 2 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Delay Wiz | Music Check |
|---|---|---|
| Price | $1.99 | Free โ better |
| Positive reviews | โ | 25.0% of reviews |
| Update frequency | Every 9 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | โ | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 17.6 | 9.0 โ better |
| Further details โ not scored | ||
| Size | 11 MB | 213 MB |
| Age rating | 4+ | 4+ |
| Developer | Kilian IT-Consulting | Johannes Loeffler |
In-app purchases
Delay Wiz
No in-app purchases
Music Check
- Data$39.99









