# Re vs システムアーキテクト

The clearest difference is ads: システムアーキテクト at none against Re's shown. システムアーキテクト also leads on update cadence (every 2 days vs every 4 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Re sells 2 one-off in-app purchases and システムアーキテクト sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Re ships an update every 4 days, システムアーキテクト every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Re | システムアーキテクト |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 24 MB | 5 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mendoxa LLC](https://appshunter.io/developer/1816388997) | [TAKAYUKI OOTA](https://appshunter.io/developer/1855196437) |

## What reviewers say

### Re

[App page](https://appshunter.io/ios/app/repra-db/id6751254008)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $0.49 | one-time |
| Mendoくんパワーアップ（開発支援） | $0.49 | one-time |


### システムアーキテクト

[App page](https://appshunter.io/ios/app/id6757303573)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| システムアーキテクト 試験対策 | $1.99 | one-time |


## Frequently asked questions

### Is Re free?

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

### Is システムアーキテクト free?

システムアーキテクト is free to download, with in-app purchases available.

### Do Re or システムアーキテクト have ads?

Re shows ads; システムアーキテクト does not.

### Which is updated more often, Re or システムアーキテクト?

Re ships an update every 4 days, and システムアーキテクト every 2 days. Most recently, Re was updated on October 30, 2026 and システムアーキテクト on October 31, 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.*