# 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ vs KEYUCA 3D

The clearest difference is ads: KEYUCA 3D at none against 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ's shown. KEYUCA 3D also leads on update cadence (every 3 months vs every 42 months). 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

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

確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ ships an update every 42 months, KEYUCA 3D every 3 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ | KEYUCA 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 42 months | **Every 3 months** |
| Size | 96 MB | 14 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 17+ | 4+ |
| Developer | [Ayaka Morita](https://appshunter.io/developer/987897829) | [Open Resource Corporation](https://appshunter.io/developer/1173765890) |

## What reviewers say

### 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ

[App page](https://appshunter.io/ios/app/e-tax/id1207137645)

**Features:** Vision Pro support

**In-app purchases:** none


### KEYUCA 3D

[App page](https://appshunter.io/ios/app/keyuca-3d/id1271262666)

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

**In-app purchases:** none


## Frequently asked questions

### Is 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ free?

確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ is free to download, with no in-app purchases.

### Is KEYUCA 3D free?

KEYUCA 3D is free to download, with no in-app purchases.

### Do 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ or KEYUCA 3D have ads?

確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ shows ads; KEYUCA 3D does not.

### Which is updated more often, 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ or KEYUCA 3D?

確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ ships an update every 42 months, and KEYUCA 3D every 3 months. Most recently, 確定申告の基礎知識｜e taxやマイナンバーの確定申告アプリ was updated on October 26, 2026 and KEYUCA 3D on November 3, 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.*