# Bubble Level for iPhone vs Black Box Dyno

The clearest difference is in-app purchases: Black Box Dyno at none against Bubble Level for iPhone's 8. Black Box Dyno also leads on ads (none vs shown) and rating (5.0 vs 4.6). Bubble Level for iPhone's advantage is ratings volume (112K vs 3). On price, update cadence and device support there is nothing between them.

Both are free to download. Bubble Level for iPhone sells 8 in-app purchases, starting at $4.99 per 7 days. Black Box Dyno asks for nothing beyond the download.

Black Box Dyno holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Bubble Level for iPhone has 112K ratings behind it against 3, so its average is the more settled of the two.

Bubble Level for iPhone ships an update every 5 weeks, Black Box Dyno every 2 months. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Bubble Level for iPhone | Black Box Dyno |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (112K ratings)](https://appshunter.io/ios/app/bubble-level-for-iphone/id465613917/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/black-box-dyno/id6476816898/reviews)** |
| Number of ratings | **112K** | 3 |
| Positive reviews | 34.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 181 MB | 23 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lemondo Apps LLc](https://appshunter.io/developer/1131593451) | [Lexi Wozniak](https://appshunter.io/developer/1727863700) |

## What reviewers say

### Bubble Level for iPhone

[App page](https://appshunter.io/ios/app/bubble-level-for-iphone/id465613917)

This app offers a suite of measurement and detection tools, including a bubble level for alignment, angle measurement, surface flatness checks, and metal detection. It also features an AR ruler for distance measurement and an inclinometer for off-road navigation.

**Highlights:** Bubble level for object alignment, Angle measurement, Surface flatness check, Metal and wire detection, AR ruler for distance measurement, Inclinometer for tilt control, Compass

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $4.99 | per 7 days |
| Weekly free trial | $4.99 | per 7 days |
| Monthly subscriptions | $5.99 | per month |
| Bubble Level Pro | $5.99 | per month |
| 3 month | $7.99 | per 3 months |
| 1 Year no free trial | $19.99 | per year |
| 1 Year | $19.99 | per year |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 🚀 Handy tool
- 👍 Useful features
- 🚀 Accurate readings
- 👍 Reliable for leveling RVs and caravans

**What reviewers complain about**

- 🐛 Inaccurate readings
- 💩 Constant ads disrupting usage
- 🤑 Paywall for full functionality
- 🐛 Ads still present after paid upgrade

**Reported bugs**

- App freezing/crashing
- Ads blocking access to app features
- Inconsistent performance across devices

**Requested features**

- Calibration option
- Improved contrast for outdoor visibility
- Larger font size for readouts
- Plumb line view through camera


### 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, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level for iPhone free?

Bubble Level for iPhone 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 for iPhone or Black Box Dyno?

Black Box Dyno is rated higher. Bubble Level for iPhone averages 4.6 out of 5 from 112K ratings, while Black Box Dyno averages 5.0 from 3 ratings.

### Do Bubble Level for iPhone or Black Box Dyno have ads?

Bubble Level for iPhone shows ads; Black Box Dyno does not.

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

Bubble Level for iPhone ships an update every 5 weeks, and Black Box Dyno every 2 months. Most recently, Bubble Level for iPhone was updated on October 16, 2026 and Black Box Dyno on October 7, 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.*