# BIOSYS vs 专注岛

The clearest difference is update cadence: 专注岛 at every 3 weeks against BIOSYS's every 2 months. 专注岛 also leads on device support (3 vs 1). On price, ads, 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.

BIOSYS ships an update every 2 months, 专注岛 every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | BIOSYS | 专注岛 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 29 MB | 633 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Refresh Biosensing Technology Co., Ltd.](https://appshunter.io/developer/1405391433) | [华南脑控(广东)智能科技有限公司](https://appshunter.io/developer/1728613747) |

## What reviewers say

### BIOSYS

[App page](https://appshunter.io/ios/app/biosys/id1562284949)

**Features:** macOS Compatibility

**In-app purchases:** none


### 专注岛

[App page](https://appshunter.io/ios/app/id6749286038)

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

**In-app purchases:** none


## Frequently asked questions

### Is BIOSYS free?

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

### Is 专注岛 free?

专注岛 is free to download, with no in-app purchases.

### Do BIOSYS or 专注岛 have ads?

Neither BIOSYS nor 专注岛 shows ads.

### Which is updated more often, BIOSYS or 专注岛?

BIOSYS ships an update every 2 months, and 专注岛 every 3 weeks. Most recently, BIOSYS was updated on November 3, 2026 and 专注岛 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.*