# Cello Tuner vs Physics Toolbox Sensor Suite

The clearest difference is rating: Physics Toolbox Sensor Suite at 4.7 against Cello Tuner's 3.9. Physics Toolbox Sensor Suite also leads on review sentiment (81% vs 44%) and ads (none vs shown). Cello Tuner's advantage is in-app purchases (none vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Physics Toolbox Sensor Suite sells 1 one-off in-app purchase. Cello Tuner asks for nothing beyond the download.

Physics Toolbox Sensor Suite holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Physics Toolbox Sensor Suite has 1.8K ratings behind it against 252, so its average is the more settled of the two. Written reviews point the same way: 44% of Cello Tuner's written reviews are positive against 81% of Physics Toolbox Sensor Suite's.

Cello Tuner ships an update every 15 months, Physics Toolbox Sensor Suite weekly. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Cello Tuner | Physics Toolbox Sensor Suite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (252 ratings)](https://appshunter.io/ios/app/cello-tuner/id336370151/reviews) | **[4.7 (1.8K ratings)](https://appshunter.io/ios/app/physics-toolbox-sensor-suite/id1128914250/reviews)** |
| Number of ratings | 252 | **1.8K** |
| Positive reviews | 43.8% of reviews | **80.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 36 MB | 78 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alvin Yu](https://appshunter.io/developer/310457194) | [Chrystian Vieyra](https://appshunter.io/developer/998187453) |

## What reviewers say

### Cello Tuner

[App page](https://appshunter.io/ios/app/cello-tuner/id336370151)

This utility app provides accurate tuning notes for the cello, covering the standard C, G, D, and A strings. It's designed to help musicians quickly and easily achieve the correct pitch for their instrument.

**Highlights:** Plays tuning notes for cello, Supports C string tuning, Supports G string tuning, Supports D string tuning, Supports A string tuning

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy-to-use interface
- 🎵 Provides accurate reference tones for tuning
- 💰 Free app with no cost barrier
- 🚀 Fast and responsive when working
- 📱 Convenient portable alternative to physical tuners

**What reviewers complain about**

- 🔊 Poor sound quality and artificial tone
- 🎵 Doesn't sound like an actual cello
- 🐛 App frequently doesn't respond to button taps
- 📺 Excessive advertisements causing glitches
- ⏱️ Notes play for too short a duration

**Reported bugs**

- Buttons unresponsive to taps
- Screen stays blank when app is opened
- Sound glitches triggered by advertisements
- App crashes or fails to load
- Notes only play for 2 seconds

**Requested features**

- Longer note duration/sustain
- Better sound quality and more realistic cello tones
- Visual indicators showing if note is sharp or flat
- Ability to listen and analyze instrument input
- Increased volume output


### Physics Toolbox Sensor Suite

[App page](https://appshunter.io/ios/app/physics-toolbox-sensor-suite/id1128914250)

This app turns your smartphone into a scientific instrument suite, enabling measurement, recording, analysis, and export of real-time sensor data. It offers tools for kinematics, acoustics, light, magnetism, and more, suitable for students, educators, researchers, and hobbyists.

**Highlights:** Real-time sensor data measurement, Data recording and analysis, Data export functionality, Kinematics tools (accelerometer, gyroscope), Acoustics tools (sound meter, oscilloscope), Magnetism tools (compass, magnetometer), AR visualization for magnetic fields and measurements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $5.99 | one-time |


## Frequently asked questions

### Is Cello Tuner free?

Cello Tuner is free to download, with no in-app purchases.

### Is Physics Toolbox Sensor Suite free?

Physics Toolbox Sensor Suite is free to download, with in-app purchases available.

### Which has better reviews, Cello Tuner or Physics Toolbox Sensor Suite?

Physics Toolbox Sensor Suite is rated higher. Cello Tuner averages 3.9 out of 5 from 252 ratings, while Physics Toolbox Sensor Suite averages 4.7 from 1.8K ratings.

### Do Cello Tuner or Physics Toolbox Sensor Suite have ads?

Cello Tuner shows ads; Physics Toolbox Sensor Suite does not.

### Which is updated more often, Cello Tuner or Physics Toolbox Sensor Suite?

Cello Tuner ships an update every 15 months, and Physics Toolbox Sensor Suite weekly. Most recently, Cello Tuner was updated on October 11, 2026 and Physics Toolbox Sensor Suite on October 16, 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.*