# Precision Bubble Level vs Plumb

The clearest difference is in-app purchases: Precision Bubble Level at none against Plumb's 1. Precision Bubble Level also leads on update cadence (daily vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

Precision Bubble Level ships an update daily, Plumb every 3 weeks. The most recent releases landed on October 6, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Precision Bubble Level | Plumb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/plumb-bubble-spirit-level/id6760734372/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | — | Free |
| Size | 36 MB | 2 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Pogorelyy](https://appshunter.io/developer/1881380350) | [National Tool Works LLC](https://appshunter.io/developer/1885230787) |

## What reviewers say

### Precision Bubble Level

[App page](https://appshunter.io/ios/app/precision-bubble-level/id6759876047)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**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 Precision Bubble Level free?

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

### Is Plumb free?

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

### Do Precision Bubble Level or Plumb have ads?

Neither Precision Bubble Level nor Plumb shows ads.

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

Precision Bubble Level ships an update daily, and Plumb every 3 weeks. Most recently, Precision Bubble Level was updated on October 6, 2026 and Plumb on October 18, 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.*