# Bubble Level vs Plumb

The clearest difference is in-app purchases: Bubble Level at none against Plumb's 1. Bubble Level also leads on rating (4.8 vs 4.6) and ratings volume (327 vs 9). Plumb's advantage is ads (none vs shown). On price, review sentiment, update cadence and monetization model there is nothing between them.

Both are free to download. Plumb sells 1 in-app purchase, starting at $9.99 per year. Bubble Level asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Bubble Level has 327 ratings behind it against 9, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Bubble Level ships an update every 2 weeks, Plumb every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bubble Level | Plumb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (327 ratings)](https://appshunter.io/ios/app/bubble-level-simple/id6757605234/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/plumb-bubble-spirit-level/id6760734372/reviews) |
| Number of ratings | **327** | 9 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 42 MB | 2 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stijn Aa](https://appshunter.io/developer/1782102905) | [National Tool Works LLC](https://appshunter.io/developer/1885230787) |

## What reviewers say

### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-simple/id6757605234)

This tool helps you determine if objects are straight and level. It displays angles on your phone and can use AR for precise measurements on walls and paintings. Ideal for home tasks like hanging pictures or ensuring shelves are flat.

**Highlights:** AR laser for walls, Angle display during rotation, Portrait and landscape orientation, AR painting leveler, User-friendly interface, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Plumb

[App page](https://appshunter.io/ios/app/plumb-bubble-spirit-level/id6760734372)

This tool simulates a physical spirit level with realistic physics and fluid optics. It offers multiple display modes for angles and surfaces, with customizable feedback for precise measurements. Features include calibration, night mode, and various themes for different lighting conditions.

**Highlights:** Realistic bubble level physics, Surface bullseye level, Customizable angle measurement, Multiple display modes, Auto-orientation detection, Hold reading function, Visual, audio, and haptic feedback

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plumb Pro | $9.99 | per year |


## Frequently asked questions

### Is Bubble Level free?

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

### Is Plumb free?

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

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

Bubble Level is rated higher. Bubble Level averages 4.8 out of 5 from 327 ratings, while Plumb averages 4.6 from 9 ratings.

### Do Bubble Level or Plumb have ads?

Bubble Level shows ads; Plumb does not.

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

Bubble Level ships an update every 2 weeks, and Plumb every 3 weeks. Most recently, Bubble Level was updated on October 25, 2026 and Plumb on October 24, 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.*