# Bubble Level ( Water level ) vs Ultra Rays

The clearest difference is ads: Ultra Rays at none against Bubble Level ( Water level )'s shown. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Bubble Level ( Water level ) | Ultra Rays |
| --- | --- | --- |
| 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 | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 6 MB | 52 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [Utlra Rays Energy Solutions](https://appshunter.io/developer/1843063088) |

## 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


### Ultra Rays

[App page](https://appshunter.io/ios/app/ultra-rays/id6753207115)

**Features:** macOS Compatibility

**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 Ultra Rays free?

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

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

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

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

Bubble Level ( Water level ) ships an update every 2 months, and Ultra Rays every 2 months. Most recently, Bubble Level ( Water level ) was updated on October 18, 2026 and Ultra Rays on October 4, 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.*