# 建築構造データブック vs JWW見れる君

The clearest difference is in-app purchases: 建築構造データブック at none against JWW見れる君's 2. JWW見れる君's advantage is update cadence (every 4 days vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. JWW見れる君 sells 2 in-app purchases, starting at $2.99 per month. 建築構造データブック asks for nothing beyond the download.

建築構造データブック ships an update every 8 months, JWW見れる君 every 4 days. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 建築構造データブック | JWW見れる君 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 days** |
| Size | 0 MB | 4 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ストラクチャー](https://appshunter.io/developer/1097429252) | [Akira Yamatani](https://appshunter.io/developer/6792604209) |

## What reviewers say

### 建築構造データブック

[App page](https://appshunter.io/ios/app/id1097429253)

**Features:** macOS Compatibility

**In-app purchases:** none


### JWW見れる君

[App page](https://appshunter.io/ios/app/jww/id6792604207)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JWW見れる君 Pro（月額） | $2.99 | per month |
| Pro（買い切り） | $29.99 | one-time |


## Frequently asked questions

### Is 建築構造データブック free?

建築構造データブック is free to download, with no in-app purchases.

### Is JWW見れる君 free?

JWW見れる君 is free to download, with in-app purchases available.

### Do 建築構造データブック or JWW見れる君 have ads?

Neither 建築構造データブック nor JWW見れる君 shows ads.

### Which is updated more often, 建築構造データブック or JWW見れる君?

建築構造データブック ships an update every 8 months, and JWW見れる君 every 4 days. Most recently, 建築構造データブック was updated on October 19, 2026 and JWW見れる君 on October 16, 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.*