# Bubble Level + Compass vs Quick3D CAD Viewer

The clearest difference is update cadence: Quick3D CAD Viewer at every 2 weeks against Bubble Level + Compass's every 4 months. Bubble Level + Compass's advantage is iOS requirement (12.0 vs 18.6). On price, ads, 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.

Bubble Level + Compass ships an update every 4 months, Quick3D CAD Viewer every 2 weeks. The most recent releases landed on October 28, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass | Quick3D CAD Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (35 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 28 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [Ryo Tazaki](https://appshunter.io/developer/6814366399) |

## What reviewers say

### Bubble Level + Compass

[App page](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463)

This utility app provides a precise bubble level for horizontal, vertical, and surface angle measurements, along with a true-north compass. It offers advanced calibration options and works on iOS devices. A Pro version is available for additional features.

**Highlights:** Horizontal and vertical level measurements, Surface angle readings, True north compass, Advanced calibration, Magnetic declination reading, Accelerometer/Gyro switch

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

**In-app purchases:** none


### Quick3D CAD Viewer

[App page](https://appshunter.io/ios/app/quick3d-cad-viewer/id6816122073)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level + Compass free?

Bubble Level + Compass is free to download, with no in-app purchases.

### Is Quick3D CAD Viewer free?

Quick3D CAD Viewer is free to download, with no in-app purchases.

### Do Bubble Level + Compass or Quick3D CAD Viewer have ads?

Both Bubble Level + Compass and Quick3D CAD Viewer show ads.

### Which is updated more often, Bubble Level + Compass or Quick3D CAD Viewer?

Bubble Level + Compass ships an update every 4 months, and Quick3D CAD Viewer every 2 weeks. Most recently, Bubble Level + Compass was updated on October 28, 2026 and Quick3D CAD Viewer on October 16, 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.*