# BED Calculator vs Thoracic Lymph Node Map

The clearest difference is update cadence: Thoracic Lymph Node Map at every 7 months against BED Calculator's every 41 months. Thoracic Lymph Node Map also leads on ratings volume (25 vs 3). BED Calculator's advantage is rating (5.0 vs 4.8). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

BED Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Thoracic Lymph Node Map has 25 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

BED Calculator ships an update every 41 months, Thoracic Lymph Node Map every 7 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | BED Calculator | Thoracic Lymph Node Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bed-calculator-radiotherapy/id397088240/reviews)** | [4.8 (25 ratings)](https://appshunter.io/ios/app/thoracic-lymph-node-map/id531517393/reviews) |
| Number of ratings | 3 | **25** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 4 MB | 128 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [MARGINAL GAINS INC.](https://appshunter.io/developer/1790407458) | [RADIOLOGiQ, LLC](https://appshunter.io/developer/519524135) |

## What reviewers say

### BED Calculator

[App page](https://appshunter.io/ios/app/bed-calculator-radiotherapy/id397088240)

This tool helps radiation oncology professionals calculate Biological Effective Dose (BED) and Equivalent Dose in 2 Gy fractions (EQD2) using the Linear-Quadratic model. It offers a streamlined interface for rapid dose calculations, including cumulative dose summation and fractionation conversion, and is now available on Apple Watch.

**Highlights:** Biological Effective Dose (BED) calculation, Equivalent Dose in 2 Gy fractions (EQD2) calculation, Linear-Quadratic (LQ) model, Cumulative dose summation, Fractionation conversion, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Thoracic Lymph Node Map

[App page](https://appshunter.io/ios/app/thoracic-lymph-node-map/id531517393)

This clinical decision-support tool helps healthcare professionals evaluate and locate thoracic lymph node stations on CT scans. It offers a color-coded map with definitions, N-category information, and sampling options, adapted from IASLC guidelines.

**Highlights:** Color-coded IASLC lymph node map, Anatomic definitions and N-category info, CT-based station overlays, Station detail cards, Common issues insights, Offline access

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

**In-app purchases:** none


## Frequently asked questions

### Is BED Calculator free?

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

### Is Thoracic Lymph Node Map free?

Thoracic Lymph Node Map is free to download, with no in-app purchases.

### Which has better reviews, BED Calculator or Thoracic Lymph Node Map?

BED Calculator is rated higher. BED Calculator averages 5.0 out of 5 from 3 ratings, while Thoracic Lymph Node Map averages 4.8 from 25 ratings.

### Do BED Calculator or Thoracic Lymph Node Map have ads?

Neither BED Calculator nor Thoracic Lymph Node Map shows ads.

### Which is updated more often, BED Calculator or Thoracic Lymph Node Map?

BED Calculator ships an update every 41 months, and Thoracic Lymph Node Map every 7 months. Most recently, BED Calculator was updated on November 1, 2026 and Thoracic Lymph Node Map on November 1, 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.*