# Bubble Level Tool vs Goniometer

The clearest difference is rating: Bubble Level Tool at 4.4 against Goniometer's 1.0. Bubble Level Tool also leads on ratings volume (2.5K vs 2) and update cadence (weekly vs monthly). Goniometer's advantage is in-app purchases (none vs 9) and iOS requirement (12.0 vs 15.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Bubble Level Tool sells 9 in-app purchases, starting at $3.99 per 7 days. Goniometer asks for nothing beyond the download.

Bubble Level Tool holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Bubble Level Tool has 2.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 6% of Bubble Level Tool's written reviews are positive against 0% of Goniometer's.

Bubble Level Tool ships an update weekly, Goniometer monthly. The most recent releases landed on October 10, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Bubble Level Tool | Goniometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (2.5K ratings)](https://appshunter.io/ios/app/bubble-level-tool-digital/id1662018802/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/goniometer/id6736895084/reviews) |
| Number of ratings | **2.5K** | 2 |
| Positive reviews | **6.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Subscription | **Free** |
| Size | 5 MB | 29 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rihab Mehboob](https://appshunter.io/developer/1441916319) | [GemRed](https://appshunter.io/developer/1279222567) |

## What reviewers say

### Bubble Level Tool

[App page](https://appshunter.io/ios/app/bubble-level-tool-digital/id1662018802)

Measure precise angles and levels with your device. Easily switch between portrait, landscape, and surface level modes. Lock and reset angles for accurate measurements.

**Highlights:** Measure current device angle, Reset angle, Lock angle, Portrait mode, Landscape mode, Surface level

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble 1 Week | $3.99 | per 7 days |
| Bubble 1 Week | $4.99 | per 7 days |
| Bubble 1 Month | $5.99 | per month |
| Bubble 1 Month | $9.99 | per month |
| Bubble 1 Year | $24.99 | per year |
| Bubble 6 Months | $29.99 | per 6 months |
| Bubble 1 Year | $39.99 | per year |
| Bubble Lifetime | $17.99 | one-time |
| Bubble Lifetime | $69.99 | one-time |

**What reviewers like**

- ⭐️ Useful app
- 🤠 Handy when needed
- 👍 It simply works

**What reviewers complain about**

- 💰 Expensive subscription
- 🚫 Unusable without paying
- 📢 Constant upsell pop-ups
- 🕰️ Limited free trial
- 🤯 Frustrating experience

**Reported bugs**

- Inaccurate level readings
- Compatibility issues with older devices

**Requested features**

- Percentage slope display option
- Ability to switch between degree and percent
- Refund/cancellation options


### Goniometer

[App page](https://appshunter.io/ios/app/goniometer/id6736895084)

Easily record joint motion range using Bluetooth connection with a digital goniometer. Track personal rehabilitation training progress for joint movement. Remember to consult a doctor before making medical decisions.

**Highlights:** Bluetooth connectivity with digital goniometer, Record joint range of motion, Track personal rehabilitation status, Monitor joint movement progress, Easy data recording

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level Tool free?

Bubble Level Tool is free to download, with in-app purchases available.

### Is Goniometer free?

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

### Which has better reviews, Bubble Level Tool or Goniometer?

Bubble Level Tool is rated higher. Bubble Level Tool averages 4.4 out of 5 from 2.5K ratings, while Goniometer averages 1.0 from 2 ratings.

### Do Bubble Level Tool or Goniometer have ads?

Neither Bubble Level Tool nor Goniometer shows ads.

### Which is updated more often, Bubble Level Tool or Goniometer?

Bubble Level Tool ships an update weekly, and Goniometer monthly. Most recently, Bubble Level Tool was updated on October 10, 2026 and Goniometer on September 27, 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.*