# スマガク vs PenFill

The clearest difference is in-app purchases: スマガク at none against PenFill's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PenFill sells 10 in-app purchases, starting at $4.99 per month. スマガク asks for nothing beyond the download.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | スマガク | PenFill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Daily | Daily |
| Size | 72 MB | 41 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [masataka fukuhara](https://appshunter.io/developer/1654653604) | [Sho Handa](https://appshunter.io/developer/1895400851) |

## What reviewers say

### スマガク

[App page](https://appshunter.io/ios/app/ai/id6754600181)

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

**In-app purchases:** none


### PenFill

[App page](https://appshunter.io/ios/app/penfill/id6763618010)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 数学モード(月額) | $4.99 | per month |
| ライフ +20 | $0.99 | one-time |
| セーブ数 +3 | $2.99 | one-time |
| ライフ +50 | $2.99 | one-time |
| セーブ数 +7 | $5.99 | one-time |
| ライフ +100 | $5.99 | one-time |
| 広告削除 | $6.99 | one-time |
| ライフ +250 | $11.99 | one-time |
| プレミアムパック | $59.99 | one-time |
| コンプリートパック | $99.99 | one-time |


## Frequently asked questions

### Is スマガク free?

スマガク is free to download, with no in-app purchases.

### Is PenFill free?

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

### Do スマガク or PenFill have ads?

Both スマガク and PenFill show ads.

### Which is updated more often, スマガク or PenFill?

スマガク ships an update daily, and PenFill daily. Most recently, スマガク was updated on October 30, 2026 and PenFill on November 5, 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.*