# BoSTT vs iRefer

The clearest difference is in-app purchases: BoSTT at none against iRefer's 1. iRefer's advantage is update cadence (every 6 weeks vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

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

BoSTT ships an update every 7 months, iRefer every 6 weeks. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | BoSTT | iRefer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bostt/id995198514/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 40 MB | 34 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Royal National Orthopaedic Hospital](https://appshunter.io/developer/995198513) | [The Royal College of Radiologists](https://appshunter.io/developer/1361218734) |

## What reviewers say

### BoSTT

[App page](https://appshunter.io/ios/app/bostt/id995198514)

Access a comprehensive library of bone and soft tissue tumor case studies from leading experts. Explore clinical histories, radiology, pathology, diagnoses, and treatment plans. Ideal for healthcare professionals and medical students seeking to expand their knowledge in musculoskeletal oncology.

**Highlights:** Musculoskeletal tumor case studies, Clinical history details, High-resolution radiology and pathology images, Diagnosis and treatment information, Learning points for each case, Expert-provided content

**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 BoSTT free?

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

### Is iRefer free?

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

### Do BoSTT or iRefer have ads?

Neither BoSTT nor iRefer shows ads.

### Which is updated more often, BoSTT or iRefer?

BoSTT ships an update every 7 months, and iRefer every 6 weeks. Most recently, BoSTT was updated on September 28, 2026 and iRefer on September 29, 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.*