# Thoracic Lymph Node Map vs U31402

The clearest difference is device support: Thoracic Lymph Node Map at 2 against U31402's —. U31402's advantage is iOS requirement (12.0 vs 16.6). On price, update cadence 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.

Thoracic Lymph Node Map ships an update every 7 months, U31402 every 13 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Thoracic Lymph Node Map | U31402 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (25 ratings)](https://appshunter.io/ios/app/thoracic-lymph-node-map/id531517393/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 7 months** | Every 13 months |
| Monetization | Free | — |
| Size | 128 MB | 74 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | 12+ | 12+ |
| Developer | [RADIOLOGiQ, LLC](https://appshunter.io/developer/519524135) | [ERT,INC](https://appshunter.io/developer/1160214546) |

## What reviewers say

### 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


### U31402

[App page](https://appshunter.io/ios/app/u31402-a-u102-daiichi-sankyo/id6476879689)

**In-app purchases:** none


## Frequently asked questions

### Is Thoracic Lymph Node Map free?

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

### Is U31402 free?

U31402 is free to download, with no in-app purchases.

### Which is updated more often, Thoracic Lymph Node Map or U31402?

Thoracic Lymph Node Map ships an update every 7 months, and U31402 every 13 months. Most recently, Thoracic Lymph Node Map was updated on October 14, 2026 and U31402 on October 11, 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.*