# Bubble Level + Compass Pro vs SQM Mobile

The clearest difference is price: SQM Mobile at Free against Bubble Level + Compass Pro's $0.99. SQM Mobile also leads on update cadence (every 4 weeks vs every 17 months). Bubble Level + Compass Pro's advantage is device support (4 vs 1) and iOS requirement (12.0 vs 17.6). On ads and in-app purchases there is nothing between them.

SQM Mobile is free to download; Bubble Level + Compass Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bubble Level + Compass Pro ships an update every 17 months, SQM Mobile every 4 weeks. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass Pro | SQM Mobile |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 4 weeks** |
| Monetization | Paid | — |
| Size | 7 MB | 42 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [GerSpatial](https://appshunter.io/developer/504662245) |

## What reviewers say

### Bubble Level + Compass Pro

[App page](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222)

This utility app provides a precise spirit level and compass for your iPhone and Apple Watch. Get live readings on your wrist, even when your phone's screen is out of sight. Features include bullseye, horizontal, and vertical levels with 0.1-degree precision.

**Highlights:** Bullseye, horizontal, and vertical levels, 0.1-degree precision, True and magnetic heading, Apple Watch companion app, Gyro or accelerometer sensor mode, Red-light night mode

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

**In-app purchases:** none


### SQM Mobile

[App page](https://appshunter.io/ios/app/sqm-mobile/id6753923113)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level + Compass Pro free?

Bubble Level + Compass Pro costs $0.99, with no in-app purchases.

### Is SQM Mobile free?

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

### Do Bubble Level + Compass Pro or SQM Mobile have ads?

Neither Bubble Level + Compass Pro nor SQM Mobile shows ads.

### Which is updated more often, Bubble Level + Compass Pro or SQM Mobile?

Bubble Level + Compass Pro ships an update every 17 months, and SQM Mobile every 4 weeks. Most recently, Bubble Level + Compass Pro was updated on September 10, 2026 and SQM Mobile on September 9, 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.*