# 洪恩爱学 vs 量尺 Ruler

The clearest difference is iOS requirement: 洪恩爱学 at 13.0 against 量尺 Ruler's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

洪恩爱学 ships an update weekly, 量尺 Ruler every 6 days. The most recent releases landed on September 27, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 洪恩爱学 | 量尺 Ruler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Size | 284 MB | 5 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hongen AiXue Technology Co., Ltd.](https://appshunter.io/developer/1896745559) | [禹焓 颜](https://appshunter.io/developer/6802085634) |

## What reviewers say

### 洪恩爱学

[App page](https://appshunter.io/ios/app/id6770470475)

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

**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 洪恩爱学 free?

洪恩爱学 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 洪恩爱学 or 量尺 Ruler have ads?

Neither 洪恩爱学 nor 量尺 Ruler shows ads.

### Which is updated more often, 洪恩爱学 or 量尺 Ruler?

洪恩爱学 ships an update weekly, and 量尺 Ruler every 6 days. Most recently, 洪恩爱学 was updated on September 27, 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.*