ShowMIDI vs Relic Waves
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ShowMIDI
This application provides a real-time, glanceable view of all MIDI activity on your computer. It visualizes various MIDI messages and allows you to pause the flow for a data snapshot. It can be used as a standalone tool or an AUv3 plugin within your DAW.
- Real-time MIDI visualization
- Auto-hides irrelevant messages
- Pause and snapshot data
- Standalone application
- AUv3 plugin support
- Supports MPE configuration
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ShowMIDI is an open-source multi-platform GUI application to effortlessly visualize MIDI activity. Instead of wading through logs of MIDI messages to correlate relevant ones and identify what is happening, ShowMIDI visualizes the current activity and auto-hides what you don't care about anymore. It provides you with a real-time glanceable view of all MIDI activity on your computer. ShowMIDI is designed to be always on, using the spacebar or play/pause button you can pause the flow and focus on a data snapshot with the latest state of any MIDI entity. ShowMIDI can be ran as a standalone application that automatically detects all your MIDI devices, or as an AUv3 plugin in your DAW or host to visualize MIDI data in your sessions. ShowMIDI visualizes: * MIDI ports * channels * program change * note on/off * channel pressure * polyphonic pressure * continuous control change * pitchbend * RPN and NRPN * MPE configuration and channel modes ShowMIDI supports: * themes * standalone operation * AUv3 operation
Relic Waves
Generate unique Lo-Fi sounds, pads, and effects using advanced synthesis algorithms. Explore billions of sonic possibilities with intuitive controls and real-time recording. Perfect for musicians and sound designers seeking experimental audio.
- Billions of unique Lo-Fi sounds
- Random sound generation with search
- Multiple keyboard input options
- Real-time audio recording to WAV
- Export to WAV, SunVox, and clipboard
- MIDI control and processing
- iOS Audio Unit Extension (AUv3)
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Relic Waves is a generator of Lo-Fi noises, pads and effects based on unique synthesis algorithms from NightRadio. More than 4 billion samples from the depths of the Mathematical Universe! Features: * search for new sounds with three buttons: next random set, edit code, previous set; each set of 12 sounds corresponds to a code of 8 characters; * three types of keyboards for live performing: on-screen buttons, PC keyboard, MIDI input; * several processing parameters + control via MIDI; * real-time audio recording to WAV (32-bit); * export to: WAV (one file or a set), SunVox (samples + effects in one file), text clipboard; * the LCK button freezes individual samples - they will not change during the search for new sets; * iOS Audio Unit Extension (AUv3). Double clicking on a parameter opens a window for setting the exact value. If you enable the Hold option, the notes will play endlessly, without reacting to key release (noteOff) events; turning the note on again works like turning it off; there are two ways to enable this option: 1) using the Hold parameter in the "MIDI Mapping" window; 2) by pressing the HOLD button, which appears in place of LCK while playing the musical keyboard: press HOLD, release the desired notes - then the released notes will continue to play.
Screenshots
Verdict
The clearest difference is price: ShowMIDI at Free against Relic Waves's $1.99. ShowMIDI also leads on update cadence (every 2 months vs every 11 months). Relic Waves's advantage is review sentiment (100% vs 88%). 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
ShowMIDI is free to download; Relic Waves costs $1.99 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 — 4.8 for ShowMIDI against 5.0 for Relic Waves. Both are backed by a comparable volume of ratings — 18 and 43 respectively. Written reviews are what separate them: 88% of ShowMIDI's written reviews are positive against 100% of Relic Waves's.
ShowMIDI ships an update every 2 months, Relic Waves every 11 months. Both last shipped on October 24, 2026.
| Parameter | ShowMIDI | Relic Waves |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.8 (18 ratings) | 5.0 (43 ratings) — better |
| Positive reviews | 87.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 | 43 — better |
| Update frequency | Every 2 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 8 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Uwyn, LLC | Alexander Zolotov |
Customer experience
ShowMIDI
Relic Waves
In-app purchases
ShowMIDI
No in-app purchases
Relic Waves
No in-app purchases








