# ePEF vs SereniBrain

The clearest difference is review sentiment: SereniBrain at 100% against ePEF's 18%. SereniBrain also leads on rating (4.7 vs 1.8). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SereniBrain holds the better App Store score, 4.7 against 1.8. Both are backed by a comparable volume of ratings — 11 and 13 respectively. Written reviews point the same way: 18% of ePEF's written reviews are positive against 100% of SereniBrain's.

ePEF ships an update every 6 weeks, SereniBrain every 4 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ePEF | SereniBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (11 ratings)](https://appshunter.io/ios/app/epef/id1584786339/reviews) | **[4.7 (13 ratings)](https://appshunter.io/ios/app/serenibrain/id6479871875/reviews)** |
| Number of ratings | 11 | **13** |
| Positive reviews | 18.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 103 MB | 341 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [上海朔茂网络科技有限公司](https://appshunter.io/developer/968257135) | [华南脑控(广东)智能科技有限公司](https://appshunter.io/developer/1728613747) |

## What reviewers say

### ePEF

[App page](https://appshunter.io/ios/app/epef/id1584786339)

This app helps manage asthma and COPD symptoms by tracking medication and monitoring acute attacks. It requires a separate digital peak flow meter for readings and provides insights for remote disease management.

**Highlights:** Symptom management for Asthma and COPD, Track medication intake, Monitor acute asthma attacks, Evaluate disease progression, Remote disease management, Requires digital peak flow meter

**Features:** Vision Pro support

**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 ePEF free?

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

### Is SereniBrain free?

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

### Which has better reviews, ePEF or SereniBrain?

SereniBrain is rated higher. ePEF averages 1.8 out of 5 from 11 ratings, while SereniBrain averages 4.7 from 13 ratings.

### Do ePEF or SereniBrain have ads?

Neither ePEF nor SereniBrain shows ads.

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

ePEF ships an update every 6 weeks, and SereniBrain every 4 weeks. Most recently, ePEF was updated on October 4, 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.*