Free Vibes vs Moon Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Free Vibes
This app emulates a vibraphone using physical modeling, generating sound in real-time without samples. It offers keyboard or mallet modes, adjustable hardness, and low CPU usage. An optional Pro version unlocks advanced sound shaping and effects.
- Physical modeling sound generation
- Full polyphony (49 notes)
- Keyboard or Mallet modes
- Adjustable mallet hardness
- Stand-alone and AUv3 plugin
- Low CPU and RAM usage
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GSi Free Vibes. Physical modeling emulation of a Vibraphone. This istrument emulates the sound and the behavior of a Vibraphone. It doesn't make any use of sampled material as the sound you hear is completely generated in real time thanks to some pretty complex math calculations performed by your device while you play. Main Features: - Physical Modeling - no samples - Full polyphony (49 notes) - Two different modes: Keyboard or Mallet - Adjustable mallet hardness - Available as stand-alone and AUv3 plugin - Very low CPU and RAM usage Buying the PRO Version gives access to additional parameters: - Built-in Program manager with unlimited programs - Authentic Tremolo effect that does not kill the attack transients - Harmonic manipulation parameters to craft the sound in more detail - Decay parameters for both the short and long notes - Ambience and Microphone settings - Mute Below Velocity function to mute notes if the note-on messages is below a given velocity level - Extended integrated user manual PLEASE NOTE: the IAP is completely optional, the instrument has no limitations. USAGE The usage is pretty simple. The main interface shows the layout of a classic 3 octave Vibraphone, from F to F, but the sound engine can generate up to 4 octaves, from C (Midi note #48) to C (Midi note #96). Touch a bar to play it, the lower the touch goes, the higher the velocity is. Operate the sustain pedal by tapping the icon on the bottom right. Parameters are: - MODE: choose between Keyboard Mode or Mallet Mode. As opposed to Keyboard Mode, in Mallet Mode the sound will not sustain while the key is depressed. - MALLET HARDNESS: adjust the hardness of the mallet from soft to hard, this will affect the attack and the way the whole instrument reacts to velocity. The Settings page offers only two settings: - Tuning: default is A=440 Hz, but this can be changed from 430 to 450. - Midi Channel: default is OMNI, but you can set it to receive on a specific channel.
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 in-app purchases: Moon Echo at none against Free Vibes's 1. On price, rating, review sentiment and ratings volume 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
Both are free to download. Free Vibes sells 1 one-off in-app purchase. Moon Echo asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Free Vibes against 4.9 for Moon Echo. Both are backed by a comparable volume of ratings — 19 and 21 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | Free Vibes | Moon Echo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (19 ratings) — better | 4.9 (21 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 19 | 21 — better |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11 — better | 12.0 |
| Further details — not scored | ||
| Size | 10 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Genuine Soundware | AudioThing Ltd. |
Customer experience
Free Vibes
Moon Echo
In-app purchases
Free Vibes
- Advanced Editing Function$7.99
Moon Echo
No in-app purchases









