# Kernel 背單字 vs 勤廬英文學習

The clearest difference is ads: 勤廬英文學習 at none against Kernel 背單字's shown. 勤廬英文學習 also leads on update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Kernel 背單字 ships an update weekly, 勤廬英文學習 every 3 days. The most recent releases landed on September 19, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Kernel 背單字 | 勤廬英文學習 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Size | 63 MB | 4 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Egan Bisma](https://appshunter.io/developer/1882424495) | [JUNG TSAN HSU](https://appshunter.io/developer/1890028155) |

## What reviewers say

### Kernel 背單字

[App page](https://appshunter.io/ios/app/kernel/id6760036064)

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

**In-app purchases:** none


### 勤廬英文學習

[App page](https://appshunter.io/ios/app/id6770361116)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kernel 背單字 free?

Kernel 背單字 is free to download, with no in-app purchases.

### Is 勤廬英文學習 free?

勤廬英文學習 is free to download, with no in-app purchases.

### Do Kernel 背單字 or 勤廬英文學習 have ads?

Kernel 背單字 shows ads; 勤廬英文學習 does not.

### Which is updated more often, Kernel 背單字 or 勤廬英文學習?

Kernel 背單字 ships an update weekly, and 勤廬英文學習 every 3 days. Most recently, Kernel 背單字 was updated on September 19, 2026 and 勤廬英文學習 on September 7, 2026.

---

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