# Bubble Level vs Smart Level

The clearest difference is rating: Bubble Level at 4.6 against Smart Level's 3.5. Bubble Level also leads on ratings volume (3.1K vs 2). Smart Level's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Bubble Level sells 1 one-off in-app purchase and Smart Level sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Bubble Level holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: Bubble Level has 3.1K ratings behind it against 2, so its average is the more settled of the two.

Bubble Level ships an update every 10 months, Smart Level every 12 months. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Bubble Level | Smart Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (3.1K ratings)](https://appshunter.io/ios/app/bubble-level-spirit-level/id906629042/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/smart-level/id1115083676/reviews) |
| Number of ratings | **3.1K** | 2 |
| Positive reviews | 29.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 months** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 23 MB |
| Requires iOS | 17.0 | **7.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Netviking AB](https://appshunter.io/developer/425652251) | [NETIGEN Kluzowicz sp. j.](https://appshunter.io/developer/892331873) |

## 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


### Smart Level

[App page](https://appshunter.io/ios/app/smart-level/id1115083676)

This utility app transforms your smartphone into a precise spirit level. It measures horizontal and vertical surfaces, displaying the angle of inclination. Ideal for home repairs and professional use, it offers ease of use and accurate readings.

**Highlights:** Smartphone spirit level, Measures horizontal and vertical surfaces, Displays angle of inclination, Bull's eye level for 2D measurement, Precise and easy to use

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdFree | $0.99 | one-time |


## Frequently asked questions

### Is Bubble Level free?

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

### Is Smart Level free?

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

### Which has better reviews, Bubble Level or Smart Level?

Bubble Level is rated higher. Bubble Level averages 4.6 out of 5 from 3.1K ratings, while Smart Level averages 3.5 from 2 ratings.

### Do Bubble Level or Smart Level have ads?

Bubble Level shows ads; Smart Level does not.

### Which is updated more often, Bubble Level or Smart Level?

Bubble Level ships an update every 10 months, and Smart Level every 12 months. Most recently, Bubble Level was updated on October 20, 2026 and Smart Level on October 10, 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.*