# Boat Units vs Precision Bubble Level

The clearest difference is update cadence: Precision Bubble Level at daily against Boat Units's every 3 days. Precision Bubble Level also leads on iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Boat Units ships an update every 3 days, Precision Bubble Level daily. The most recent releases landed on November 7, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Boat Units | Precision Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Size | 7 MB | 36 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Johansson](https://appshunter.io/developer/1659201231) | [Andrey Pogorelyy](https://appshunter.io/developer/1881380350) |

## What reviewers say

### Boat Units

[App page](https://appshunter.io/ios/app/boat-units/id1659201229)

**Features:** macOS Compatibility

**In-app purchases:** none


### Precision Bubble Level

[App page](https://appshunter.io/ios/app/precision-bubble-level/id6759876047)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Boat Units free?

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

### Is Precision Bubble Level free?

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

### Do Boat Units or Precision Bubble Level have ads?

Neither Boat Units nor Precision Bubble Level shows ads.

### Which is updated more often, Boat Units or Precision Bubble Level?

Boat Units ships an update every 3 days, and Precision Bubble Level daily. Most recently, Boat Units was updated on November 7, 2026 and Precision Bubble Level on November 13, 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.*