# Bubble Level vs UniFesb

The clearest difference is in-app purchases: UniFesb at none against Bubble Level's 3. UniFesb also leads on ads (none vs shown) and update cadence (weekly vs every 2 weeks). Bubble Level's advantage is iOS requirement (15.0 vs 26.2). On price and device support there is nothing between them.

Both are free to download. Bubble Level sells 3 in-app purchases, starting at $1.99 per 7 days. UniFesb asks for nothing beyond the download.

Bubble Level ships an update every 2 weeks, UniFesb weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Bubble Level | UniFesb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (60 ratings)](https://appshunter.io/ios/app/bubble-level-spirit-tool/id6470280224/reviews)** | — |
| Number of ratings | **60** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 17 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Andy Sutanto](https://appshunter.io/developer/1659282966) | [Ivan Begonja](https://appshunter.io/developer/1648710179) |

## What reviewers say

### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-spirit-tool/id6470280224)

This tool helps you ensure surfaces are perfectly horizontal or vertical using various measurement modes. It offers features like angle locking, calibration for accuracy, and an audible indicator for precise leveling.

**Highlights:** Multiple leveling modes (Circle, Vertical, Horizontal, Mix), Lock current angle feature, Calibration for accurate readings, Audible indicator for perfect leveling, User-friendly interface, Angle locking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Level Pro | $1.99 | per 7 days |
| Spirit Level Pro | $19.99 | per year |
| Waterpas Pro - Waterpass | $39.99 | one-time |


### UniFesb

[App page](https://appshunter.io/ios/app/unifesb/id6816148012)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level free?

Bubble Level is free to download, with in-app purchases available.

### Is UniFesb free?

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

### Do Bubble Level or UniFesb have ads?

Bubble Level shows ads; UniFesb does not.

### Which is updated more often, Bubble Level or UniFesb?

Bubble Level ships an update every 2 weeks, and UniFesb weekly. Most recently, Bubble Level was updated on November 3, 2026 and UniFesb on October 31, 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.*