# ePEF vs SonicAid

The clearest difference is update cadence: ePEF at every 6 weeks against SonicAid's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

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

ePEF ships an update every 6 weeks, SonicAid every 6 months. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ePEF | SonicAid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (11 ratings)](https://appshunter.io/ios/app/epef/id1584786339/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 103 MB | 265 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [上海朔茂网络科技有限公司](https://appshunter.io/developer/968257135) | [徐州永康电子科技有限公司](https://appshunter.io/developer/1095223244) |

## 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


### SonicAid

[App page](https://appshunter.io/ios/app/sonicaid/id6740261036)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ePEF free?

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

### Is SonicAid free?

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

### Do ePEF or SonicAid have ads?

Neither ePEF nor SonicAid shows ads.

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

ePEF ships an update every 6 weeks, and SonicAid every 6 months. Most recently, ePEF was updated on September 17, 2026 and SonicAid on September 24, 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.*