# Sankyu vs Hack Kanji AI

The clearest difference is iOS requirement: Sankyu at 13.0 against Hack Kanji AI's 16.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Sankyu ships an update monthly, Hack Kanji AI fortnightly. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sankyu | Hack Kanji AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hack-kanji-ai/id6739555322/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free |
| Size | 88 MB | 120 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IPM INTERNATION DEVELOPMENT AND TRADE JOINT STOCK COMPANY](https://appshunter.io/developer/1566625688) | [Son Le Long](https://appshunter.io/developer/1537534911) |

## What reviewers say

### Sankyu

[App page](https://appshunter.io/ios/app/sankyu/id1566625686)

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

**In-app purchases:** none


### Hack Kanji AI

[App page](https://appshunter.io/ios/app/hack-kanji-ai/id6739555322)

Learn Japanese Kanji with a free, gamified app designed for Vietnamese speakers. It uses a science-based memorization method and offers AI-powered pronunciation practice, writing exercises, and JLPT/JFT preparation.

**Highlights:** 2136 Kanji characters and 241 radicals, N5-N1 level classification, AI-powered pronunciation practice, Interactive Kanji writing exercises, Gamified learning with progress tracking, JLPT and JFT preparation

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

**In-app purchases:** none


## Frequently asked questions

### Is Sankyu free?

Sankyu is free to download, with no in-app purchases.

### Is Hack Kanji AI free?

Hack Kanji AI is free to download, with no in-app purchases.

### Do Sankyu or Hack Kanji AI have ads?

Neither Sankyu nor Hack Kanji AI shows ads.

### Which is updated more often, Sankyu or Hack Kanji AI?

Sankyu ships an update monthly, and Hack Kanji AI fortnightly. Most recently, Sankyu was updated on October 16, 2026 and Hack Kanji AI on October 24, 2026.

---

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