# Bubble Level ( Water level ) vs ProttoBau

The clearest difference is ads: ProttoBau at none against Bubble Level ( Water level )'s shown. ProttoBau also leads on update cadence (fortnightly vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Bubble Level ( Water level ) ships an update every 2 months, ProttoBau fortnightly. Both last shipped on October 18, 2026.

## The numbers

| Metric | Bubble Level ( Water level ) | ProttoBau |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (235 ratings)](https://appshunter.io/ios/app/bubble-level-water-level/id908924787/reviews)** | — |
| Number of ratings | **235** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 41 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [VCA Virtual Catalogue Applications UG (haftungsbeschrankt)](https://appshunter.io/developer/1874340208) |

## What reviewers say

### Bubble Level ( Water level )

[App page](https://appshunter.io/ios/app/bubble-level-water-level/id908924787)

This utility app functions as a digital spirit level. It helps users determine horizontal and vertical alignment for various tasks, such as hanging frames or installing TVs. The app provides precise measurements for circular, X-axis, and Y-axis tilts.

**Highlights:** Digital spirit level, Horizontal and vertical alignment, Circular tilt measurement, X-axis tilt information, Y-axis tilt information

**Features:** Vision Pro support

**In-app purchases:** none


### ProttoBau

[App page](https://appshunter.io/ios/app/prottobau/id6758674128)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level ( Water level ) free?

Bubble Level ( Water level ) is free to download, with no in-app purchases.

### Is ProttoBau free?

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

### Do Bubble Level ( Water level ) or ProttoBau have ads?

Bubble Level ( Water level ) shows ads; ProttoBau does not.

### Which is updated more often, Bubble Level ( Water level ) or ProttoBau?

Bubble Level ( Water level ) ships an update every 2 months, and ProttoBau fortnightly. Most recently, Bubble Level ( Water level ) was updated on October 18, 2026 and ProttoBau on October 18, 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.*