# CKDMS vs BPNA

The clearest difference is update cadence: BPNA at every 4 months against CKDMS's every 14 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.

CKDMS ships an update every 14 months, BPNA every 4 months. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | CKDMS | BPNA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 months** |
| Size | 6 MB | 84 MB |
| Requires iOS | 16.6 | **15.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [CP Ho](https://appshunter.io/developer/1248719604) | [British Paediatric Neurology Association](https://appshunter.io/developer/1325552016) |

## What reviewers say

### CKDMS

[App page](https://appshunter.io/ios/app/ckdms/id1248719605)

**Features:** macOS Compatibility

**In-app purchases:** none


### BPNA

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CKDMS free?

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

### Is BPNA free?

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

### Do CKDMS or BPNA have ads?

Neither CKDMS nor BPNA shows ads.

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

CKDMS ships an update every 14 months, and BPNA every 4 months. Most recently, CKDMS was updated on October 1, 2026 and BPNA on October 5, 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.*