GyroSynth vs CalmusPlayLite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GyroSynth
This app transforms your device into a gesture-controlled musical instrument. Use your device's gyroscope to manipulate sound parameters like pitch and volume, creating melodies and effects by moving your hand through the air. Explore various synthesizer types and built-in effects for a unique music creation experience.
- Gesture-driven sound manipulation
- Multiple synthesizer types
- Built-in effects (delay, boost)
- Musical scales for easy playing
- Recorder with overdub function
- Experimental FM modulation
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GyroSynth is a gesture driven music synthesizer, which takes full adventage of the gyroscope. You can play and modulate the sound by moving your hand through the air - just like the legendary Theremin instrument. GyroSynth makes use of the gyroscope to measure true roll, pitch, and yaw and translates them to sound parameters like pitch, volume, modulation or filter cutoff. Thanks to phenomenal accuracy (2000 degrees), you can play melodies perfectly in tune. A finalist in 'Most Innovative App' category at the 2010 Best App Ever Awards (148apps). GyroSynth has been used in numerous live jams and performances (e.g., Mindex) FEATURES - Synthesizers: vocal (formant synthesizer), sine wave , square (PWM modulation), saw, granular sample player with recording function and R2D2 - experimental FM modulation - Effects: delay and boost - Several control modes - Included musical scales allow you to effortlessly play in several styles - Built-in recorder and player with overdub function "There isn’t too much more to say about GyroSynth other than wow!" AppSafari Enjoy the new experience!
CalmusPlayLite
This app generates original, royalty-free music using AI based on user-selected parameters like location, zodiac sign, and color. It offers a unique way to create personalized soundtracks for various media or personal enjoyment.
- AI-powered music composition
- Royalty-free music generation
- Personalized music based on user input
- Customizable parameters (location, zodiac, color, etc.)
- Music for movies, TV shows, and games
- Original compositions
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CalmusPlay - Your Personal Composer - composes music based on you... CalmusPlay composes original and royalty free music using Artificial Intelligence - Music for movies, TV shows or Games - and music for your self. The core of CalmusPlay is the CalmusAI brain where the modern composing methods are programmed into the brain using Lisp programming language. NASA has historically used Lisp for artificial intelligence and autonomous systems, most notably in the 1990s Remote Agent project, the first AI system to control a spacecraft. CalmusPlay does not collect or use any musical material from the internet but creates new music based on the input from the user. CalmusPlay can compose thousands of royalty free music examples by combining geographical position , zodiac sign, complexity, interests, colour and speed. How it works: Select your geographical origin, zodiac sign, personality complexity, interests, favourite colour, speed of your music and press Play … CalmusPlay is a simple versions of MacOs program CalmusComposer
Screenshots
Verdict
The clearest difference is price: CalmusPlayLite at Free against GyroSynth's $4.99. CalmusPlayLite also leads on rating (5.0 vs 4.4) and review sentiment (100% vs 73%). GyroSynth's advantage is ratings volume (37 vs 1). On ads, in-app purchases and device support 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
CalmusPlayLite is free to download; GyroSynth costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CalmusPlayLite holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: GyroSynth has 37 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 73% of GyroSynth's written reviews are positive against 100% of CalmusPlayLite's.
GyroSynth ships an update every 12 months, CalmusPlayLite every 4 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.
| Parameter | GyroSynth | CalmusPlayLite |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.4 (37 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 73.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 37 — better | 1 |
| Update frequency | Every 12 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 291 MB |
| Age rating | 4+ | 4+ |
| Developer | BeepStreet | Erki-tonlist sf |
Customer experience
GyroSynth
CalmusPlayLite
Bugs and requests
GyroSynth
Reported bugs
7 issues- No sound no matter what I do
- Crashed on startup on iOS 8
- Crashes on launch since the iOS 8 update
- Stopped working with iOS 8
- Sampler doesn't work
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- Doesn't work on iOS 8.1
- Crashes as soon as I open it on iOS 8
Requested features
7 requests- Custom scales that can be saved
- Wireless midi out
- Ability to play iPod tracks in background
- More synth modules, more/selectable FX, sample import, the ability to assign parameters beyond waveform modification to the gyroscopic planes
- Recording and export feature
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- Labels for the notes
- More voices
CalmusPlayLite
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GyroSynth
No in-app purchases
CalmusPlayLite
No in-app purchases
Questions
Is GyroSynth free?
Is CalmusPlayLite free?
Which has better reviews, GyroSynth or CalmusPlayLite?
Do GyroSynth or CalmusPlayLite have ads?
Which is updated more often, GyroSynth or CalmusPlayLite?
Other comparisons
