GyroSynth vs Cello Tuner Professional
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!
Cello Tuner Professional
Achieve precise cello tuning with this intuitive app. It offers instant loading, high responsiveness, and visual indicators to guide musicians of all levels. Advanced settings and a tuning fork are available as in-app purchases.
- Instant and fast tuning
- Accurate frequency display in Hz
- Multiple calibration options
- Intuitive LED tuning indicator
- Visual tuned string indicator
- Advanced settings and tuning fork (in-app purchase)
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Tune your cello instantly with precision and ease! Optimal for beginners, intermediate and advanced musicians! · The most accurate - displays the exact sound frequency in Hz. · Calibration for A: 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, 466Hz. · Instant load and fastest tuning! - Optimized for latest devices. · Highest responsiveness and sensitivity. · Intuitive user interface with LED tuning indicator. · Visual indicators - tuned string lights up. · Universal app - works with iPhone, iPad and iPod touch. · Advanced settings (A4 calibration, Mic sensitivity, Sound notifications) and Tuning fork! (as in-app purchases) What our users say: "Does what it promises - Very useful app." "This app makes tuning so easy!" "By far the greatest and most accurate cello tuning app. Play the string, read its chart and you know whether you're in tune." "Amazing! Outstanding, well spent money! "All cellists should have this app!" "It's very useful for me! Thank you!" "Excellent app" "Very convenient software. Suitable for any skill!" --- Please make sure to allow microphone access to this app when prompted. Check it under Settings>Privacy>Microphone. Thank you. --- Got ideas? Questions? Please send us your feedback through our site or to feedback@daikyoujulabs.com
Screenshots
Verdict
The clearest difference is rating: GyroSynth at 4.4 against Cello Tuner Professional's 3.7. GyroSynth also leads on in-app purchases (none vs 2) and review sentiment (73% vs 40%). Cello Tuner Professional's advantage is update cadence (every 4 months vs every 12 months). On ratings volume, ads, monetization model 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
GyroSynth costs $4.99 and Cello Tuner Professional $9.99 up front. Cello Tuner Professional sells 2 one-off in-app purchases. GyroSynth asks for nothing beyond the download.
GyroSynth holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 37 and 24 respectively. Written reviews point the same way: 73% of GyroSynth's written reviews are positive against 40% of Cello Tuner Professional's.
GyroSynth ships an update every 12 months, Cello Tuner Professional every 4 months. Both last shipped on November 1, 2026.
| Parameter | GyroSynth | Cello Tuner Professional |
|---|---|---|
| Price | $4.99 — better | $9.99 |
| Rating | 4.4 (37 ratings) — better | 3.7 (24 ratings) |
| Positive reviews | 73.0% of reviews — better | 39.5% of reviews |
| Number of ratings | 37 — better | 24 |
| Update frequency | Every 12 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 8 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | BeepStreet | Pedro Daniel Macalupu Cumpen |
Customer experience
GyroSynth
Cello Tuner Professional
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
Cello Tuner Professional
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GyroSynth
No in-app purchases
Cello Tuner Professional
- SettingsFree
- Tuning ForkFree
Questions
Is GyroSynth free?
Is Cello Tuner Professional free?
Which has better reviews, GyroSynth or Cello Tuner Professional?
Do GyroSynth or Cello Tuner Professional have ads?
Which is updated more often, GyroSynth or Cello Tuner Professional?
Other comparisons
