# 【KYUSAN】九州産業大学 vs 英語日記 Niki

The clearest difference is in-app purchases: 【KYUSAN】九州産業大学 at none against 英語日記 Niki's 4. 英語日記 Niki's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (18.5 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 英語日記 Niki sells 4 in-app purchases, starting at $5.99 per month. 【KYUSAN】九州産業大学 asks for nothing beyond the download.

【KYUSAN】九州産業大学 ships an update every 2 weeks, 英語日記 Niki every 4 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 【KYUSAN】九州産業大学 | 英語日記 Niki |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 21 MB | 24 MB |
| Requires iOS | 26.0 | **18.5** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NAKAMURA SANGYO GAKUEN EDUCATIONAL ASSOCIATION](https://appshunter.io/developer/702774518) | [Cliffkentaro Shimada](https://appshunter.io/developer/1873912572) |

## What reviewers say

### 【KYUSAN】九州産業大学

[App page](https://appshunter.io/ios/app/kyusan/id702774515)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### 英語日記 Niki

[App page](https://appshunter.io/ios/app/niki-ai/id6758602521)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Niki プレミアム (1ヶ月間) | $5.99 | per month |
| Niki プレミアム (1年間) | $59.99 | per year |
| Support Coffee – Regular | $0.99 | one-time |
| Support Coffee – Large | $1.99 | one-time |


## Frequently asked questions

### Is 【KYUSAN】九州産業大学 free?

【KYUSAN】九州産業大学 is free to download, with no in-app purchases.

### Is 英語日記 Niki free?

英語日記 Niki is free to download, with in-app purchases available.

### Do 【KYUSAN】九州産業大学 or 英語日記 Niki have ads?

Neither 【KYUSAN】九州産業大学 nor 英語日記 Niki shows ads.

### Which is updated more often, 【KYUSAN】九州産業大学 or 英語日記 Niki?

【KYUSAN】九州産業大学 ships an update every 2 weeks, and 英語日記 Niki every 4 days. Most recently, 【KYUSAN】九州産業大学 was updated on October 29, 2026 and 英語日記 Niki on October 25, 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.*