GyroSynth vs Radio
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!
Radio
Build personalized radio stations by adding any audio stream. View song details and album art on your lock screen. Enjoy reliable background playback with instant station switching and a sleep timer.
- Create stations from any stream URL
- View song and album art on lock screen
- Background playback with lock screen controls
- Instant station switching
- Sleep timer and alarm clock functionality
- Tag and search station library
- iCloud sync and backup
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Radio: Create Stations Build your own radio playlist. Add streams from around the world, create custom stations, save favorite songs, and enjoy a personalized listening experience. Create stations with your own names, logos, genres, and descriptions. Listen with smooth playback, view current song information, discover album artwork, and control playback directly from the Lock Screen and CarPlay. Supported Stream Formats • MP3 • AAC • AAC+ • M4A • HLS (.m3u8) • PLS • M3U • ASX • WAX • WVX • RAM • RPM • SMIL • HE-AAC Features • Create unlimited custom radio stations • Add station names, logos, genres, and descriptions • View current song information when available • Display album artwork and Lock Screen metadata • CarPlay Now Playing support • Save favorite songs with artwork, station name, date, and time • Quick iTunes / Apple Music search for currently playing songs • Background audio playback • Lock Screen playback controls • Sleep Timer and Wake Up radio • Fast station switching • Search and organize your station library • Copy and paste support throughout the app • iCloud backup and synchronization • Playlist and stream URL support • No subscriptions • No in-app purchases How It Works 1. Add a stream URL. 2. Give your station a name and logo. 3. Start listening instantly. 4. Save favorite songs as they play. 5. Build your personal radio collection. Privacy No account required. Your stations, favorites, and settings remain on your device and within your personal iCloud account when synchronization is enabled. Radio: Create Stations puts you in control of your radio experience.
Screenshots
Verdict
The clearest difference is review sentiment: Radio at 100% against GyroSynth's 73%. Radio also leads on update cadence (every 3 months vs every 12 months). GyroSynth's advantage is rating (4.4 vs 4.0) and ratings volume (37 vs 6). On price, ads, in-app purchases and monetization model 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
GyroSynth costs $4.99 and Radio $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GyroSynth holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: GyroSynth has 37 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 73% of GyroSynth's written reviews are positive against 100% of Radio's, so the app with the better star average is not the one people write more warmly about.
GyroSynth ships an update every 12 months, Radio every 3 months. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.
| Parameter | GyroSynth | Radio |
|---|---|---|
| Price | $4.99 | $4.99 |
| Rating | 4.4 (37 ratings) — better | 4.0 (6 ratings) |
| Positive reviews | 73.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 37 — better | 6 |
| Update frequency | Every 12 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.6 — better | 18.1 |
| Further details — not scored | ||
| Size | 8 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | BeepStreet | Laurand Osmeni |
Customer experience
GyroSynth
Radio
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
Radio
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GyroSynth
No in-app purchases
Radio
No in-app purchases









