# ATA Thyrosim vs Modern Thyroid Clinic

The clearest difference is price: Modern Thyroid Clinic at Free against ATA Thyrosim's $3.99. Modern Thyroid Clinic also leads on update cadence (every 8 days vs every 41 months). ATA Thyrosim's advantage is chart position (#126 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

ATA Thyrosim ships an update every 41 months, Modern Thyroid Clinic every 8 days. Both last shipped on November 7, 2026.

## The numbers

| Metric | ATA Thyrosim | Modern Thyroid Clinic |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 8 days** |
| Best chart rank | **#126** | — |
| Size | 2 MB | 129 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [American Thyroid Association](https://appshunter.io/developer/890053717) | [Modern Thyroid Clinic](https://appshunter.io/developer/1569478876) |

## What reviewers say

### ATA Thyrosim

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

**Currently charting:** #126 Top Paid · Medical (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


### Modern Thyroid Clinic

[App page](https://appshunter.io/ios/app/modern-thyroid-clinic/id1569478874)

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

**In-app purchases:** none


## Frequently asked questions

### Is ATA Thyrosim free?

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

### Is Modern Thyroid Clinic free?

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

### Do ATA Thyrosim or Modern Thyroid Clinic have ads?

Neither ATA Thyrosim nor Modern Thyroid Clinic shows ads.

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

ATA Thyrosim ships an update every 41 months, and Modern Thyroid Clinic every 8 days. Most recently, ATA Thyrosim was updated on November 7, 2026 and Modern Thyroid Clinic on November 7, 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.*