# BIOSYS vs 西小喵

The clearest difference is ads: BIOSYS at none against 西小喵's shown. 西小喵's advantage is device support (3 vs 1). On price, update cadence, 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, 西小喵 every 5 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | BIOSYS | 西小喵 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6755818094/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 29 MB | 225 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Refresh Biosensing Technology Co., Ltd.](https://appshunter.io/developer/1405391433) | [Jianshu Technology (Chongqing) Co., Ltd.](https://appshunter.io/developer/1856553353) |

## What reviewers say

### BIOSYS

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 西小喵

[App page](https://appshunter.io/ios/app/id6755818094)

**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 西小喵 free?

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

### Do BIOSYS or 西小喵 have ads?

西小喵 shows ads; BIOSYS does not.

### Which is updated more often, BIOSYS or 西小喵?

BIOSYS ships an update every 2 months, and 西小喵 every 5 weeks. Most recently, BIOSYS was updated on November 3, 2026 and 西小喵 on October 30, 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.*