Comparison

ShowMIDI vs Relic Waves

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Real-time MIDI visualization
  • Auto-hides irrelevant messages
  • Pause and snapshot data
  • Standalone application
  • AUv3 plugin support
  • Supports MPE configuration
Features
Read full description

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

About

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.

Highlights
  • 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)
Features
Read full description

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

ShowMIDI4 screens
Relic Waves1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

ShowMIDI ships an update every 2 months, Relic Waves every 11 months. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
ShowMIDI versus Relic Waves: the parameters behind the verdict, then further details
ParameterShowMIDIRelic Waves
PriceFree — better$1.99
Rating4.8 (18 ratings)5.0 (43 ratings) — better
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings1843 — better
Update frequencyEvery 2 months — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size8 MB6 MB
Age rating4+4+
DeveloperUwyn, LLCAlexander Zolotov

Customer experience

ShowMIDI

All ratings18 ratings
Positive94.4%
Neutral5.6%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral12.5%
Negative0.0%

Relic Waves

All ratings42 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews22 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ShowMIDI

No in-app purchases

None

Relic Waves

No in-app purchases

Questions

Is ShowMIDI free?
ShowMIDI is free to download, with no in-app purchases.
Is Relic Waves free?
Relic Waves costs $1.99, with no in-app purchases.
Which has better reviews, ShowMIDI or Relic Waves?
Relic Waves is rated higher. ShowMIDI averages 4.8 out of 5 from 18 ratings, while Relic Waves averages 5.0 from 43 ratings.
Do ShowMIDI or Relic Waves have ads?
Neither ShowMIDI nor Relic Waves shows ads.
Which is updated more often, ShowMIDI or Relic Waves?
ShowMIDI ships an update every 2 months, and Relic Waves every 11 months. Most recently, ShowMIDI was updated on October 24, 2026 and Relic Waves on October 24, 2026.

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