Comparison

Moon Echo vs Jam Assist

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

Head to head
About

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.

Highlights
  • Moon-based echo simulation
  • Lo-fi musical effect
  • Celestial modulation
  • Space education tool
  • AUv3 and Standalone support
Features
Read full description

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.

About

Jam Assist

This app listens to music and identifies the key, scale, and mode being played. It then visually displays these scales on guitar, bass, and piano fretboards, highlighting notes as they sound. It's designed for improvisation and learning musical scales by ear.

Highlights
  • Real-time key, scale, and mode detection
  • Visual scale display on guitar, bass, and piano
  • Live note highlighting on fretboards
  • Supports major, minor, pentatonic, and modes
  • Offline, on-device processing
  • No cloud, accounts, or network required
Features
Read full description

What key is this song in? What scale should you play over it? Point your phone at the music and Jam Assist listens, then names the key, scale, and mode it hears - and lights up exactly where to play it on your guitar, bass, and piano. It is a compass for your ear, not an autopilot. Most tools only help once you already know the key: a chord chart, a tab, a scale diagram to copy. Jam Assist works one step earlier, for the moment you cannot hear it yet. It listens to whatever is actually sounding and tells you where you are: the key, the scale, the mode, live. That is the missing half. Key finders can hear a song but stop at the name and never show you the fretboard. Scale libraries show you the fretboard but cannot hear a thing, so you have to already know the scale to look it up. Jam Assist does both at once: it hears the music and lays that exact scale under your fingers, in real time. What you can do with it: - Jam and improvise in the right key over any track or backing loop - Work out what scale to solo over by ear, instead of guessing - Find the key of a song by ear, on guitar, bass, or piano - Watch the scale shapes light up live while you play - Learn the modes by hearing them named the moment they happen What it detects, honestly: It hears the notes in the room and names the key, scale, and mode: major and minor, all seven modes (Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian), major and minor pentatonic, blues, hirajoshi, insen, and whole tone. It shows you the scale to play, not chords, and it is not a tuner. It reads live sound, so it is never a static scale dictionary you flip through. Private by design: everything runs on your device, mic in only. No cloud, no accounts, no network, nothing leaves your phone. Hear it, see the fretboard, and jam in the right key.

Screenshots

Moon Echo1 screens
Jam Assist3 screens

Verdict

The call

The clearest difference is ratings volume: Moon Echo at 21 against Jam Assist's 1. Moon Echo also leads on iOS requirement (12.0 vs 17.6). On price, rating, 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

Both are free to download. 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 — 4.9 for Moon Echo against 5.0 for Jam Assist. That said, the two scores are not equally well evidenced: Moon Echo has 21 ratings behind it against 1, so its average is the more settled of the two.

Scorecard2 real differences · 8 level
Moon Echo versus Jam Assist: the parameters behind the verdict, then further details
ParameterMoon EchoJam Assist
PriceFreeFree
Rating4.9 (21 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings21 — better1
Update frequency—Every 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.6
Further details — not scored
Size21 MB3 MB
Age rating4+4+
DeveloperAudioThing Ltd.Maxim Oransky

Customer experience

Moon Echo

All ratings21 ratings
Positive95.2%
Neutral0.0%
Negative4.8%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Jam Assist

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Moon Echo

No in-app purchases

None

Jam Assist

No in-app purchases

Questions

Is Moon Echo free?
Moon Echo is free to download, with no in-app purchases.
Is Jam Assist free?
Jam Assist is free to download, with no in-app purchases.
Which has better reviews, Moon Echo or Jam Assist?
Jam Assist is rated higher. Moon Echo averages 4.9 out of 5 from 21 ratings, while Jam Assist averages 5.0 from 1 ratings.
Do Moon Echo or Jam Assist have ads?
Neither Moon Echo nor Jam Assist shows ads.

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