# GyroSynth vs Cello Tuner Professional

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.

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.

## The numbers

| Metric | GyroSynth | Cello Tuner Professional |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | **[4.4 (37 ratings)](https://appshunter.io/ios/app/gyrosynth/id386527164/reviews)** | [3.7 (24 ratings)](https://appshunter.io/ios/app/cello-tuner-professional/id807752194/reviews) |
| Number of ratings | **37** | 24 |
| Positive reviews | **73.0% of reviews** | 39.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 8 MB | 7 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [Pedro Daniel Macalupu Cumpen](https://appshunter.io/developer/492172409) |

## What reviewers say

### GyroSynth

[App page](https://appshunter.io/ios/app/gyrosynth/id386527164)

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.

**Highlights:** Gesture-driven sound manipulation, Multiple synthesizer types, Built-in effects (delay, boost), Musical scales for easy playing, Recorder with overdub function, Experimental FM modulation

**In-app purchases:** none

**What reviewers like**

- 👍 Most fun instrument!
- 👍 Unique and impressive
- 👍 Great app!
- 👍 Amazing!
- 👍 Fantastic

**What reviewers complain about**

- 🐛 No sound
- 🐛 Crashed and would not work
- 🐛 No longer works
- 🐛 Crashes on iOS 8
- 🐛 Sampler doesn't work still!

**Reported bugs**

- 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

**Requested features**

- 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


### Cello Tuner Professional

[App page](https://appshunter.io/ios/app/cello-tuner-professional/id807752194)

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.

**Highlights:** 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)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Settings | Free | one-time |
| Tuning Fork | Free | one-time |


## Frequently asked questions

### Is GyroSynth free?

GyroSynth costs $4.99, with no in-app purchases.

### Is Cello Tuner Professional free?

Cello Tuner Professional costs $9.99, and also offers in-app purchases.

### Which has better reviews, GyroSynth or Cello Tuner Professional?

GyroSynth is rated higher. GyroSynth averages 4.4 out of 5 from 37 ratings, while Cello Tuner Professional averages 3.7 from 24 ratings.

### Do GyroSynth or Cello Tuner Professional have ads?

Neither GyroSynth nor Cello Tuner Professional shows ads.

### Which is updated more often, GyroSynth or Cello Tuner Professional?

GyroSynth ships an update every 12 months, and Cello Tuner Professional every 4 months. Most recently, GyroSynth was updated on November 1, 2026 and Cello Tuner Professional on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*