# Bubble Level vs CADViewer

The clearest difference is ads: CADViewer at none against Bubble Level's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Bubble Level sells 1 one-off in-app purchase and CADViewer sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Bubble Level | CADViewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (3.1K ratings)](https://appshunter.io/ios/app/bubble-level-spirit-level/id906629042/reviews)** | — |
| Number of ratings | **3.1K** | — |
| Positive reviews | 29.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 53 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Netviking AB](https://appshunter.io/developer/425652251) | [Wuhan Yousigan Technology Co., Ltd](https://appshunter.io/developer/1290096219) |

## What reviewers say

### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-spirit-level/id906629042)

This utility app functions as a precise spirit level for your iOS devices. It's ideal for tasks like aligning picture frames, measuring angles, and checking the levelness of various surfaces. The app offers calibration and accurate readings to a tenth of a degree.

**Highlights:** Measure surface level, Calibrate with one click, Accurate to 0.1 degree, Retina display support, Picture frame alignment, Angle and slope measurement

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $4.99 | one-time |

**What reviewers like**

- 👍 Handy app to have available
- 🚀 Easy to use
- 💡 Useful for home jobs
- 🚀 Accurate and functional

**What reviewers complain about**

- 🐛 Ads constantly interrupt usage
- 🐛 Ads prevent app from working properly
- 🐛 Ads and games take over the app
- 🐛 Calibration issues and inability to use vertically

**Reported bugs**

- Ads crash the app
- Inability to exit the app due to ads
- Calibration button doesn't work as expected

**Requested features**

- Percent slope display option
- Ability to rotate bubble to vertical position


### CADViewer

[App page](https://appshunter.io/ios/app/cadviewer/id6810497606)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $2.99 | per month |
| 连续包年 | $3.99 | per year |


## Frequently asked questions

### Is Bubble Level free?

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

### Is CADViewer free?

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

### Do Bubble Level or CADViewer have ads?

Bubble Level shows ads; CADViewer does not.

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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.*