# 知谱学院 vs 双语日记

The clearest difference is update cadence: 双语日记 at daily against 知谱学院's every 4 months. 知谱学院's advantage is iOS requirement (12.4 vs 17.6). 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.

知谱学院 ships an update every 4 months, 双语日记 daily. The most recent releases landed on October 18, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 知谱学院 | 双语日记 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Size | 33 MB | 5 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [北京中教仪科技有限公司](https://appshunter.io/developer/1639536743) | [增宝 王](https://appshunter.io/developer/827650044) |

## What reviewers say

### 知谱学院

[App page](https://appshunter.io/ios/app/id6450109252)

**Features:** macOS Compatibility

**In-app purchases:** none


### 双语日记

[App page](https://appshunter.io/ios/app/id6711354518)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 知谱学院 free?

知谱学院 is free to download, with no in-app purchases.

### Is 双语日记 free?

双语日记 is free to download, with no in-app purchases.

### Do 知谱学院 or 双语日记 have ads?

Neither 知谱学院 nor 双语日记 shows ads.

### Which is updated more often, 知谱学院 or 双语日记?

知谱学院 ships an update every 4 months, and 双语日记 daily. Most recently, 知谱学院 was updated on October 18, 2026 and 双语日记 on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*