# 快练习 vs 量尺 Ruler

The clearest difference is update cadence: 量尺 Ruler at every 6 days against 快练习's monthly. 快练习's advantage is iOS requirement (9.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

快练习 ships an update monthly, 量尺 Ruler every 6 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 快练习 | 量尺 Ruler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 34 MB | 5 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [丹丹 魏](https://appshunter.io/developer/1550304898) | [禹焓 颜](https://appshunter.io/developer/6802085634) |

## What reviewers say

### 快练习

[App page](https://appshunter.io/ios/app/id1551760244)

**Features:** macOS Compatibility

**In-app purchases:** none


### 量尺 Ruler

[App page](https://appshunter.io/ios/app/ruler/id6802361249)

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

**In-app purchases:** none


## Frequently asked questions

### Is 快练习 free?

快练习 is free to download, with no in-app purchases.

### Is 量尺 Ruler free?

量尺 Ruler is free to download, with no in-app purchases.

### Do 快练习 or 量尺 Ruler have ads?

Neither 快练习 nor 量尺 Ruler shows ads.

### Which is updated more often, 快练习 or 量尺 Ruler?

快练习 ships an update monthly, and 量尺 Ruler every 6 days. Most recently, 快练习 was updated on October 7, 2026 and 量尺 Ruler on October 8, 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.*