# Bubble Level Tool vs Black Box Dyno

The clearest difference is rating: Black Box Dyno at 5.0 against Bubble Level Tool's 4.4. Black Box Dyno also leads on in-app purchases (none vs 9). Bubble Level Tool's advantage is ratings volume (2.5K vs 3) and update cadence (weekly vs every 5 weeks). On price, ads, device support and iOS requirement 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. Black Box Dyno asks for nothing beyond the download.

Black Box Dyno holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Bubble Level Tool has 2.5K ratings behind it against 3, so its average is the more settled of the two.

Bubble Level Tool ships an update weekly, Black Box Dyno every 5 weeks. The most recent releases landed on September 22, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Bubble Level Tool | Black Box Dyno |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (2.5K ratings)](https://appshunter.io/ios/app/bubble-level-tool-digital/id1662018802/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/black-box-dyno/id6476816898/reviews)** |
| Number of ratings | **2.5K** | 3 |
| Positive reviews | 6.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Subscription | **Free** |
| Size | 5 MB | 23 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rihab Mehboob](https://appshunter.io/developer/1441916319) | [Lexi Wozniak](https://appshunter.io/developer/1727863700) |

## 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


### Black Box Dyno

[App page](https://appshunter.io/ios/app/black-box-dyno/id6476816898)

This application analyzes minibike performance when used with compatible hardware. It displays real-time speed and engine RPM, and provides detailed post-run data on gearing, horsepower, torque, and top speed. It's ideal for tuning modifications or settling friendly performance debates.

**Highlights:** Speedometer, Tachometer, Gearing analysis, Horsepower tracking, Torque measurement, Top speed 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 Black Box Dyno free?

Black Box Dyno is free to download, with no in-app purchases.

### Which has better reviews, Bubble Level Tool or Black Box Dyno?

Black Box Dyno is rated higher. Bubble Level Tool averages 4.4 out of 5 from 2.5K ratings, while Black Box Dyno averages 5.0 from 3 ratings.

### Do Bubble Level Tool or Black Box Dyno have ads?

Neither Bubble Level Tool nor Black Box Dyno shows ads.

### Which is updated more often, Bubble Level Tool or Black Box Dyno?

Bubble Level Tool ships an update weekly, and Black Box Dyno every 5 weeks. Most recently, Bubble Level Tool was updated on September 22, 2026 and Black Box Dyno on September 6, 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.*