# BPNA vs EPI

The clearest difference is update cadence: EPI at every 2 weeks against BPNA's every 4 months. EPI also leads on iOS requirement (12.0 vs 15.5). 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.

BPNA ships an update every 4 months, EPI every 2 weeks. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | BPNA | EPI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 84 MB | 92 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [British Paediatric Neurology Association](https://appshunter.io/developer/1325552016) | [TechBeez](https://appshunter.io/developer/1696489577) |

## What reviewers say

### BPNA

[App page](https://appshunter.io/ios/app/bpna/id1325552017)

**Features:** macOS Compatibility

**In-app purchases:** none


### EPI

[App page](https://appshunter.io/ios/app/epi-aid/id6479019153)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BPNA free?

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

### Is EPI free?

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

### Do BPNA or EPI have ads?

Neither BPNA nor EPI shows ads.

### Which is updated more often, BPNA or EPI?

BPNA ships an update every 4 months, and EPI every 2 weeks. Most recently, BPNA was updated on October 5, 2026 and EPI on October 4, 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.*