# NB On Call vs iRefer

The clearest difference is in-app purchases: NB On Call at none against iRefer's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iRefer sells 1 in-app purchase, starting at $149.99 per year. NB On Call asks for nothing beyond the download.

NB On Call ships an update every 3 weeks, iRefer every 6 weeks. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | NB On Call | iRefer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 10 MB | 34 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [GPFORUM SOLUTIONS LIMITED](https://appshunter.io/developer/1207803578) | [The Royal College of Radiologists](https://appshunter.io/developer/1361218734) |

## What reviewers say

### NB On Call

[App page](https://appshunter.io/ios/app/nb-on-call/id1207803579)

A secure, judgment-free community for GMC-registered GPs to share clinical and non-clinical cases. Ask questions, get peer advice, and track your Continuing Professional Development (CPD) automatically. Join thousands of UK GPs in this protected network.

**Highlights:** Share clinical and non-clinical cases, Anonymized posting option, Judgment-free discussion zone, Easy-to-use interface, Protected network with GMC verification, Automatic CPD tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### iRefer

[App page](https://appshunter.io/ios/app/irefer/id6550924402)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iRefer Individual Plan | $149.99 | per year |


## Frequently asked questions

### Is NB On Call free?

NB On Call is free to download, with no in-app purchases.

### Is iRefer free?

iRefer is free to download, with in-app purchases available.

### Do NB On Call or iRefer have ads?

Neither NB On Call nor iRefer shows ads.

### Which is updated more often, NB On Call or iRefer?

NB On Call ships an update every 3 weeks, and iRefer every 6 weeks. Most recently, NB On Call was updated on October 17, 2026 and iRefer on October 14, 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.*