# BIOSYS vs SereniBrain

The clearest difference is update cadence: SereniBrain at every 4 weeks against BIOSYS's every 2 months. SereniBrain 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, SereniBrain every 4 weeks. The most recent releases landed on September 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | BIOSYS | SereniBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (13 ratings)](https://appshunter.io/ios/app/serenibrain/id6479871875/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 29 MB | 341 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| 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


### SereniBrain

[App page](https://appshunter.io/ios/app/serenibrain/id6479871875)

This tool uses brain-computer interface technology to guide users through meditation scenarios. It helps individuals learn meditation techniques to achieve relaxation for both body and mind. The app provides assessments, real-time feedback, and detailed analysis reports.

**Highlights:** Meditation State Assessment, Real-time Neural Feedback, Meditation Analysis Reports, Premium Practice Content

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BIOSYS free?

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

### Is SereniBrain free?

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

### Do BIOSYS or SereniBrain have ads?

Neither BIOSYS nor SereniBrain shows ads.

### Which is updated more often, BIOSYS or SereniBrain?

BIOSYS ships an update every 2 months, and SereniBrain every 4 weeks. Most recently, BIOSYS was updated on September 25, 2026 and SereniBrain on October 6, 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.*