Relic Flow vs Moon Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Relic Flow
Generate unique Lo-Fi rhythms, noise patterns, and drum loops using advanced synthesis algorithms. Explore billions of sound samples with intuitive controls and real-time audio recording. Perfect for musicians and sound designers seeking endless creative possibilities.
- Lo-Fi rhythm and drum loop generation
- Billions of unique sound samples
- Real-time audio recording to WAV
- Multiple input methods (on-screen, PC keyboard, MIDI)
- Export to WAV, SunVox, and text clipboard
- iOS Audio Unit Extension (AUv3) support
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Relic Flow is a generator of Lo-Fi rhythms, noise patterns and drum loops 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.
Moon Echo
This free music app simulates echoes using the moon as a radio wave reflector. It creates unique, lively, and lo-fi effects modulated by celestial movements, offering a playful tool for both musicians and space enthusiasts.
- Moon-based echo simulation
- Lo-fi musical effect
- Celestial modulation
- Space education tool
- AUv3 and Standalone support
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In our seventh collaboration with Berlin-based musician Hainbach we listen to the stars: Moon Echo is a free to download delay based on a communications technique that uses our closest cosmic neighbor, the moon, as a reflector for radio waves. This results in some rather crunchy and lively echoes, modulated by the movement of Earth and moon. The moon's surface is an imperfect mirror and creates artifacts, unlike any other echo technique. Moon Echo is both a musical lo-fi effect and a playful tool for teaching about space. Available as AUv3 and Standalone.
Screenshots
Verdict
The clearest difference is price: Moon Echo at Free against Relic Flow's $1.99. On rating, review sentiment, ratings volume and ads 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
Moon Echo is free to download; Relic Flow 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 Relic Flow against 4.8 for Moon Echo. Both are backed by a comparable volume of ratings — 26 and 20 respectively. Written reviews are what separate them: 93% of Relic Flow's written reviews are positive against 100% of Moon Echo's.
| Parameter | Relic Flow | Moon Echo |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.8 (26 ratings) | 4.8 (20 ratings) |
| Positive reviews | 93.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 20 |
| Update frequency | Every 17 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 6 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Zolotov | AudioThing Ltd. |
Customer experience
Relic Flow
Moon Echo
In-app purchases
Relic Flow
No in-app purchases
Moon Echo
No in-app purchases









