# Nihongo Diary vs Lucrux

The clearest difference is update cadence: Lucrux at every 2 days against Nihongo Diary's every 10 days. Nihongo Diary's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Nihongo Diary sells 2 in-app purchases, starting at $9.99 per month and Lucrux sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Nihongo Diary ships an update every 10 days, Lucrux every 2 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Nihongo Diary | Lucrux |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 2 days** |
| Size | 17 MB | 47 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Tetta Taguchi](https://appshunter.io/developer/6786536555) | [Search Rebel](https://appshunter.io/developer/1675522508) |

## What reviewers say

### Nihongo Diary

[App page](https://appshunter.io/ios/app/nihongo-diary/id6786536553)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $9.99 | per month |
| Pro | $19.99 | per month |


### Lucrux

[App page](https://appshunter.io/ios/app/lucrux-ai-study-partner/id6787816758)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study Partner | $14.99 | per month |
| Study Partner Plus | $29.99 | per month |


## Frequently asked questions

### Is Nihongo Diary free?

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

### Is Lucrux free?

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

### Do Nihongo Diary or Lucrux have ads?

Neither Nihongo Diary nor Lucrux shows ads.

### Which is updated more often, Nihongo Diary or Lucrux?

Nihongo Diary ships an update every 10 days, and Lucrux every 2 days. Most recently, Nihongo Diary was updated on October 11, 2026 and Lucrux on October 7, 2026.

---

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