# 秒でできる英単語帳 vs KnowUp

The clearest difference is in-app purchases: 秒でできる英単語帳 at none against KnowUp's 2. KnowUp's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, update cadence and ads there is nothing between them.

Both are free to download. KnowUp sells 2 in-app purchases, starting at $2.99 per month. 秒でできる英単語帳 asks for nothing beyond the download.

秒でできる英単語帳 ships an update daily, KnowUp every 2 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 秒でできる英単語帳 | KnowUp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 days |
| Size | 12 MB | 89 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Appricot Co.,Ltd.](https://appshunter.io/developer/1716553156) | [Wenfeng Duan](https://appshunter.io/developer/1454244715) |

## What reviewers say

### 秒でできる英単語帳

[App page](https://appshunter.io/ios/app/id6748310108)

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

**In-app purchases:** none


### KnowUp

[App page](https://appshunter.io/ios/app/knowup-ai-flashcards-and-study/id6779905080)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| knowup monthly | $2.99 | per month |
| knowup annual | $24.99 | per year |


## Frequently asked questions

### Is 秒でできる英単語帳 free?

秒でできる英単語帳 is free to download, with no in-app purchases.

### Is KnowUp free?

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

### Do 秒でできる英単語帳 or KnowUp have ads?

Neither 秒でできる英単語帳 nor KnowUp shows ads.

### Which is updated more often, 秒でできる英単語帳 or KnowUp?

秒でできる英単語帳 ships an update daily, and KnowUp every 2 days. Most recently, 秒でできる英単語帳 was updated on November 7, 2026 and KnowUp on October 31, 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.*