# Thyroid Navigator vs ATA Thyrosim

The clearest difference is price: Thyroid Navigator at Free against ATA Thyrosim's $3.99. ATA Thyrosim's advantage is chart position (#110 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Thyroid Navigator is free to download; ATA Thyrosim costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thyroid Navigator ships an update every 21 months, ATA Thyrosim every 41 months. The most recent releases landed on June 16, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Thyroid Navigator | ATA Thyrosim |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/thyroid-navigator/id823444434/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 21 months** | Every 41 months |
| Monetization | Free | — |
| Best chart rank | — | **#110** |
| Size | 92 MB | 2 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Kuma Hospital](https://appshunter.io/developer/823444437) | [American Thyroid Association](https://appshunter.io/developer/890053717) |

## What reviewers say

### Thyroid Navigator

[App page](https://appshunter.io/ios/app/thyroid-navigator/id823444434)

This app provides a detailed 3D model of the thyroid and surrounding structures. It's designed as a communication and educational tool for medical professionals to explain thyroid diseases and conditions to patients and students.

**Highlights:** Detailed 3D thyroid model, 360-degree rotation, Multiple display patterns (skin, vessels, nerves), Tumor symptom samples, Pre- and post-operative images, Communication tool for medical scenes

**Features:** macOS Compatibility

**In-app purchases:** none


### ATA Thyrosim

[App page](https://appshunter.io/ios/app/ata-thyrosim/id1508623861)

**Currently charting:** #110 Top Paid · Medical (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Thyroid Navigator free?

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

### Is ATA Thyrosim free?

ATA Thyrosim costs $3.99, with no in-app purchases.

### Do Thyroid Navigator or ATA Thyrosim have ads?

Neither Thyroid Navigator nor ATA Thyrosim shows ads.

### Which is updated more often, Thyroid Navigator or ATA Thyrosim?

Thyroid Navigator ships an update every 21 months, and ATA Thyrosim every 41 months. Most recently, Thyroid Navigator was updated on June 16, 2026 and ATA Thyrosim on September 16, 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.*