# ATA Calculator vs DynaMedex

The clearest difference is price: DynaMedex at Free against ATA Calculator's $2.99. DynaMedex also leads on rating (4.8 vs 3.0) and update cadence (every 5 weeks vs every 9 months). ATA Calculator's advantage is iOS requirement (11.0 vs 18.4). On ads, in-app purchases and device support there is nothing between them.

DynaMedex is free to download; ATA Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DynaMedex holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: DynaMedex has 676 ratings behind it against 1, so its average is the more settled of the two.

ATA Calculator ships an update every 9 months, DynaMedex every 5 weeks. The most recent releases landed on October 3, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ATA Calculator | DynaMedex |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/ata-calculator/id890053714/reviews) | **[4.8 (676 ratings)](https://appshunter.io/ios/app/dynamedex/id1519312217/reviews)** |
| Number of ratings | 1 | **676** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 38 MB |
| Requires iOS | **11.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [American Thyroid Association](https://appshunter.io/developer/890053717) | [EBSCO Publishing](https://appshunter.io/developer/433269590) |

## What reviewers say

### ATA Calculator

[App page](https://appshunter.io/ios/app/ata-calculator/id890053714)

This medical app provides thyroid nodule calculators to assist healthcare providers in guiding treatment decisions for thyroid disease and cancer. It offers recommendations based on current evidence and expert opinion, but emphasizes that it is a tool to supplement, not replace, physician judgment.

**Highlights:** Thyroid nodule calculators, Guidance for thyroid disease and cancer, Evidence-based recommendations, Supports clinical judgment, Developed by American Thyroid Association

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

**In-app purchases:** none


### DynaMedex

[App page](https://appshunter.io/ios/app/dynamedex/id1519312217)

This clinician-focused tool provides timely, objective analysis and guidance on patient care, drawing from rigorously reviewed medical literature. It offers comprehensive disease and medication content to support informed decision-making for healthcare professionals.

**Highlights:** Evidence-based patient care guidance, Daily medical literature review, Comprehensive disease content, Medication information, Mobile and desktop syncing, Clinician-focused tool

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ATA Calculator free?

ATA Calculator costs $2.99, with no in-app purchases.

### Is DynaMedex free?

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

### Which has better reviews, ATA Calculator or DynaMedex?

DynaMedex is rated higher. ATA Calculator averages 3.0 out of 5 from 1 ratings, while DynaMedex averages 4.8 from 676 ratings.

### Do ATA Calculator or DynaMedex have ads?

Neither ATA Calculator nor DynaMedex shows ads.

### Which is updated more often, ATA Calculator or DynaMedex?

ATA Calculator ships an update every 9 months, and DynaMedex every 5 weeks. Most recently, ATA Calculator was updated on October 3, 2026 and DynaMedex on October 17, 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.*