# 大机+ vs 双拼岛

The clearest difference is in-app purchases: 大机+ at none against 双拼岛's 2. 大机+ also leads on iOS requirement (12.0 vs 18.6). 双拼岛's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 双拼岛 sells 2 in-app purchases, starting at $1.99 per month. 大机+ asks for nothing beyond the download.

大机+ ships an update every 5 weeks, 双拼岛 weekly. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 大机+ | 双拼岛 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Size | 54 MB | 64 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [中国铁建高新装备股份有限公司](https://appshunter.io/developer/1645207514) | [秋萍 明](https://appshunter.io/developer/1671497003) |

## What reviewers say

### 大机+

[App page](https://appshunter.io/ios/app/plus/id1645207512)

**Features:** macOS Compatibility

**In-app purchases:** none


### 双拼岛

[App page](https://appshunter.io/ios/app/id6759847855)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $1.99 | per month |
| LifeTime | $14.99 | one-time |


## Frequently asked questions

### Is 大机+ free?

大机+ is free to download, with no in-app purchases.

### Is 双拼岛 free?

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

### Do 大机+ or 双拼岛 have ads?

Neither 大机+ nor 双拼岛 shows ads.

### Which is updated more often, 大机+ or 双拼岛?

大机+ ships an update every 5 weeks, and 双拼岛 weekly. Most recently, 大机+ was updated on September 17, 2026 and 双拼岛 on September 20, 2026.

---

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