# RadOnc Reference vs ESTRO 2026

The clearest difference is review sentiment: RadOnc Reference at 80% against ESTRO 2026's 0%. RadOnc Reference also leads on iOS requirement (6.0 vs 15.5). ESTRO 2026's advantage is update cadence (every 9 days vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

RadOnc Reference ships an update every 2 months, ESTRO 2026 every 9 days. The most recent releases landed on October 11, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | RadOnc Reference | ESTRO 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (45 ratings)](https://appshunter.io/ios/app/radonc-reference/id563419791/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | **80.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 6 MB | 100 MB |
| Requires iOS | **6.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Pretesh Patel](https://appshunter.io/developer/563419794) | [CYIM](https://appshunter.io/developer/394180060) |

## What reviewers say

### RadOnc Reference

[App page](https://appshunter.io/ios/app/radonc-reference/id563419791)

A comprehensive iPhone reference tool for Radiation Oncologists, offering quick access to essential clinical information. It includes cancer staging, contouring atlases, DVH constraints, calculators, medications, and ICD-9 codes.

**Highlights:** Cancer Staging, Contouring Atlases, DVH Normal Tissue Constraints, Clinical Calculators, Prescribed Medications, Oncology ICD-9 Codes

**Features:** macOS Compatibility

**In-app purchases:** none


### ESTRO 2026

[App page](https://appshunter.io/ios/app/estro-2026/id1614477899)

Access the full program, engage during sessions, and view posters for a leading radiation oncology congress. This app facilitates learning, collaboration, and connection within the medical community.

**Highlights:** Access congress program, Interact during sessions, Watch session replays, View posters, Connect with community

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RadOnc Reference free?

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

### Is ESTRO 2026 free?

ESTRO 2026 is free to download, with no in-app purchases.

### Do RadOnc Reference or ESTRO 2026 have ads?

Neither RadOnc Reference nor ESTRO 2026 shows ads.

### Which is updated more often, RadOnc Reference or ESTRO 2026?

RadOnc Reference ships an update every 2 months, and ESTRO 2026 every 9 days. Most recently, RadOnc Reference was updated on October 11, 2026 and ESTRO 2026 on September 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*