# Gyroscope ∞ Rotation Sensor vs TrueLevel Bubble Level

The clearest difference is in-app purchases: TrueLevel Bubble Level at none against Gyroscope ∞ Rotation Sensor's 2. TrueLevel Bubble Level also leads on ads (none vs shown). Gyroscope ∞ Rotation Sensor's advantage is update cadence (every 4 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Gyroscope ∞ Rotation Sensor sells 2 in-app purchases, starting at $1.99 per month. TrueLevel Bubble Level asks for nothing beyond the download.

Gyroscope ∞ Rotation Sensor ships an update every 4 weeks, TrueLevel Bubble Level every 2 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | Gyroscope ∞ Rotation Sensor | TrueLevel Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gyroscope-rotation-sensor/id6774744125/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 12 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fawkes Wei](https://appshunter.io/developer/432767536) | [Ilia Filiaev](https://appshunter.io/developer/1742628366) |

## What reviewers say

### Gyroscope ∞ Rotation Sensor

[App page](https://appshunter.io/ios/app/gyroscope-rotation-sensor/id6774744125)

Visualize your device's real-time rotation and angular velocity across three axes. Switch between degrees and radians per second for precise measurements. Offers a clean, distraction-free interface for understanding sensor data.

**Highlights:** Live 3-axis rotation chart, Degrees/second and radians/second modes, Smooth, bias-removed sensor readings, Distraction-free design, Real-time visualization

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Lifetime | $9.99 | one-time |


### TrueLevel Bubble Level

[App page](https://appshunter.io/ios/app/truelevel-bubble-level/id6776346163)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gyroscope ∞ Rotation Sensor free?

Gyroscope ∞ Rotation Sensor is free to download, with in-app purchases available.

### Is TrueLevel Bubble Level free?

TrueLevel Bubble Level is free to download, with no in-app purchases.

### Do Gyroscope ∞ Rotation Sensor or TrueLevel Bubble Level have ads?

Gyroscope ∞ Rotation Sensor shows ads; TrueLevel Bubble Level does not.

### Which is updated more often, Gyroscope ∞ Rotation Sensor or TrueLevel Bubble Level?

Gyroscope ∞ Rotation Sensor ships an update every 4 weeks, and TrueLevel Bubble Level every 2 months. Most recently, Gyroscope ∞ Rotation Sensor was updated on October 11, 2026 and TrueLevel Bubble Level on October 11, 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.*