# 水平仪 vs Wall Level

The clearest difference is in-app purchases: 水平仪 at none against Wall Level's 1. 水平仪 also leads on iOS requirement (15.6 vs 17.0). Wall Level's advantage is ads (none vs shown) and update cadence (every 3 days vs every 4 weeks). On price and device support there is nothing between them.

Both are free to download. Wall Level sells 1 one-off in-app purchase. 水平仪 asks for nothing beyond the download.

水平仪 ships an update every 4 weeks, Wall Level every 3 days. The most recent releases landed on October 6, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 水平仪 | Wall Level |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 3 days** |
| Size | 21 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [魁鹏 宋](https://appshunter.io/developer/977980685) | [Poyu Chiang](https://appshunter.io/developer/1835443971) |

## What reviewers say

### 水平仪

[App page](https://appshunter.io/ios/app/and/id6742847919)

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

**In-app purchases:** none


### Wall Level

[App page](https://appshunter.io/ios/app/wall-level-hang-it-straight/id6809204873)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 海報模擬框 | $2.99 | one-time |


## Frequently asked questions

### Is 水平仪 free?

水平仪 is free to download, with no in-app purchases.

### Is Wall Level free?

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

### Do 水平仪 or Wall Level have ads?

水平仪 shows ads; Wall Level does not.

### Which is updated more often, 水平仪 or Wall Level?

水平仪 ships an update every 4 weeks, and Wall Level every 3 days. Most recently, 水平仪 was updated on October 6, 2026 and Wall Level on October 29, 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.*