# ARSA（アーサ） vs HEART KNIFE

The clearest difference is update cadence: HEART KNIFE at monthly against ARSA（アーサ）'s every 16 months. ARSA（アーサ）'s advantage is iOS requirement (8.0 vs 11.0). On price, ads, in-app purchases and device support there is nothing between them.

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

ARSA（アーサ） ships an update every 16 months, HEART KNIFE monthly. Both last shipped on November 11, 2026.

## The numbers

| Metric | ARSA（アーサ） | HEART KNIFE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Monthly** |
| Size | 3 MB | 25 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [STEELSTYLE K.K.](https://appshunter.io/developer/1547579860) |

## What reviewers say

### ARSA（アーサ）

[App page](https://appshunter.io/ios/app/arsa/id1437772078)

**Features:** macOS Compatibility

**In-app purchases:** none


### HEART KNIFE

[App page](https://appshunter.io/ios/app/heart-knife/id1547579858)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ARSA（アーサ） free?

ARSA（アーサ） is free to download, with no in-app purchases.

### Is HEART KNIFE free?

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

### Do ARSA（アーサ） or HEART KNIFE have ads?

Neither ARSA（アーサ） nor HEART KNIFE shows ads.

### Which is updated more often, ARSA（アーサ） or HEART KNIFE?

ARSA（アーサ） ships an update every 16 months, and HEART KNIFE monthly. Most recently, ARSA（アーサ） was updated on November 11, 2026 and HEART KNIFE on November 11, 2026.

---

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