# Precise Bubble Level vs Trueline

The clearest difference is update cadence: Trueline at daily against Precise Bubble Level's every 11 days. Precise Bubble Level's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Precise Bubble Level sells 3 in-app purchases, starting at $0.99 per 7 days and Trueline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Precise Bubble Level ships an update every 11 days, Trueline daily. The most recent releases landed on September 12, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Precise Bubble Level | Trueline |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 11 days | **Daily** |
| Size | 49 MB | 12 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Turan Hurkan Ergunsu](https://appshunter.io/developer/1842106410) | [Edge Analytics s.r.o.](https://appshunter.io/developer/1867465595) |

## What reviewers say

### Precise Bubble Level

[App page](https://appshunter.io/ios/app/precise-bubble-level/id6762563537)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | per 7 days |
| Remove Ads | $2.99 | per month |
| Remove Ads | $17.99 | per year |


### Trueline

[App page](https://appshunter.io/ios/app/trueline-level-tool/id6800032249)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trueline Pro | $6.99 | one-time |


## Frequently asked questions

### Is Precise Bubble Level free?

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

### Is Trueline free?

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

### Do Precise Bubble Level or Trueline have ads?

Both Precise Bubble Level and Trueline show ads.

### Which is updated more often, Precise Bubble Level or Trueline?

Precise Bubble Level ships an update every 11 days, and Trueline daily. Most recently, Precise Bubble Level was updated on September 12, 2026 and Trueline on September 15, 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.*