# Bubble Level vs P4net Security

The clearest difference is in-app purchases: P4net Security at none against Bubble Level's 1. P4net Security also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Bubble Level sells 1 one-off in-app purchase. P4net Security asks for nothing beyond the download.

Bubble Level ships an update every 10 months, P4net Security every 9 months. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Bubble Level | P4net Security |
| --- | --- | --- |
| 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 | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 9 months** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 13 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Netviking AB](https://appshunter.io/developer/425652251) | [CDNTV Tecnologia LTDA](https://appshunter.io/developer/1481116398) |

## 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


### P4net Security

[App page](https://appshunter.io/ios/app/p4net-security/id6744180939)

**Features:** macOS Compatibility, 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 P4net Security free?

P4net Security is free to download, with no in-app purchases.

### Do Bubble Level or P4net Security have ads?

Bubble Level shows ads; P4net Security does not.

### Which is updated more often, Bubble Level or P4net Security?

Bubble Level ships an update every 10 months, and P4net Security every 9 months. Most recently, Bubble Level was updated on October 29, 2026 and P4net Security on October 28, 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.*