# Bubble Level + Compass Pro vs lithium connect

The clearest difference is price: lithium connect at Free against Bubble Level + Compass Pro's $0.99. lithium connect also leads on update cadence (every 3 months vs every 17 months). Bubble Level + Compass Pro's advantage is device support (4 vs 2). On ads, in-app purchases and iOS requirement there is nothing between them.

lithium connect 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, lithium connect every 3 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass Pro | lithium connect |
| --- | --- | --- |
| 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 3 months** |
| Monetization | Paid | — |
| Size | 7 MB | 30 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [军 吴](https://appshunter.io/developer/1855893545) |

## 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


### lithium connect

[App page](https://appshunter.io/ios/app/lithium-connect/id6757992562)

**Features:** macOS Compatibility

**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 lithium connect free?

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

### Do Bubble Level + Compass Pro or lithium connect have ads?

Neither Bubble Level + Compass Pro nor lithium connect shows ads.

### Which is updated more often, Bubble Level + Compass Pro or lithium connect?

Bubble Level + Compass Pro ships an update every 17 months, and lithium connect every 3 months. Most recently, Bubble Level + Compass Pro was updated on October 10, 2026 and lithium connect on September 30, 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.*