# Pocket Bubble Level XXL vs ZETLIGHT SYSTEM

The clearest difference is review sentiment: Pocket Bubble Level XXL at 80% against ZETLIGHT SYSTEM's 29%. Pocket Bubble Level XXL also leads on rating (4.8 vs 4.3) and ratings volume (17K vs 3). ZETLIGHT SYSTEM's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Pocket Bubble Level XXL sells 1 one-off in-app purchase. ZETLIGHT SYSTEM asks for nothing beyond the download.

Pocket Bubble Level XXL holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Pocket Bubble Level XXL has 17K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 80% of Pocket Bubble Level XXL's written reviews are positive against 29% of ZETLIGHT SYSTEM's.

Pocket Bubble Level XXL ships an update every 4 months, ZETLIGHT SYSTEM every 2 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | Pocket Bubble Level XXL | ZETLIGHT SYSTEM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (17K ratings)](https://appshunter.io/ios/app/pocket-bubble-level-xxl/id876323966/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/zetlight-system/id1052640173/reviews) |
| Number of ratings | **17K** | 3 |
| Positive reviews | **79.9% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 22 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [Zetlight Group](https://appshunter.io/developer/1156386420) |

## What reviewers say

### Pocket Bubble Level XXL

[App page](https://appshunter.io/ios/app/pocket-bubble-level-xxl/id876323966)

This app provides a precise spirit level using your smartphone's sensors. It helps you align objects horizontally, vertically, or at any angle, making it ideal for DIY projects and handyman tasks. Premium features offer augmented reality and advanced measurement capabilities.

**Highlights:** Measures angle or inclination, Precise inclination angle display, Lockable orientation, Measures angle/slope of objects, Easy-to-read display, Augmented reality spirit level (premium), Clinometer for vertical angles (premium)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium features without ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Accurate and sensitive
- 👍 Easy to use
- 💡 Handy to have on phone
- 🚀 Immediate response
- 👍 Simple and straightforward

**What reviewers complain about**

- 🐛 Doesn't work for some users
- 👎 Limited functionality compared to competitors
- 🔋 Ads disrupt user experience
- 👎 Difficulty calibrating or using

**Reported bugs**

- App freezes or crashes
- Inconsistent performance
- Inaccurate readings

**Requested features**

- Add more level types or views
- Improve accuracy and sensitivity
- Provide better instructions or tutorials
- Offer customization options


### ZETLIGHT SYSTEM

[App page](https://appshunter.io/ios/app/zetlight-system/id1052640173)

Control Zetlight LED aquarium lighting devices remotely. Manage multiple lights, adjust effects like dawn and lunar phases, and simulate weather patterns. Offers basic and expert control platforms for aquarium hobbyists.

**Highlights:** Control Zetlight LED lighting devices, Wireless network control, Manage multiple lightings, Basic and Expert control platforms, Adjust light effects (dawn, sunrise, daytime, sunset, nighttime), Simulate weather and lunar phases, Acclimation mode for new tank inhabitants

**In-app purchases:** none


## Frequently asked questions

### Is Pocket Bubble Level XXL free?

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

### Is ZETLIGHT SYSTEM free?

ZETLIGHT SYSTEM is free to download, with no in-app purchases.

### Which has better reviews, Pocket Bubble Level XXL or ZETLIGHT SYSTEM?

Pocket Bubble Level XXL is rated higher. Pocket Bubble Level XXL averages 4.8 out of 5 from 17K ratings, while ZETLIGHT SYSTEM averages 4.3 from 3 ratings.

### Do Pocket Bubble Level XXL or ZETLIGHT SYSTEM have ads?

Neither Pocket Bubble Level XXL nor ZETLIGHT SYSTEM shows ads.

### Which is updated more often, Pocket Bubble Level XXL or ZETLIGHT SYSTEM?

Pocket Bubble Level XXL ships an update every 4 months, and ZETLIGHT SYSTEM every 2 months. Most recently, Pocket Bubble Level XXL was updated on November 6, 2026 and ZETLIGHT SYSTEM on November 6, 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.*