# ATA Calculator vs ESMO Interactive Guidelines

The clearest difference is price: ESMO Interactive Guidelines at Free against ATA Calculator's $2.99. ESMO Interactive Guidelines also leads on rating (4.8 vs 3.0) and ratings volume (150 vs 1). On update cadence, ads, in-app purchases and device support there is nothing between them.

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

ESMO Interactive Guidelines holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: ESMO Interactive Guidelines has 150 ratings behind it against 1, so its average is the more settled of the two.

ATA Calculator ships an update every 9 months, ESMO Interactive Guidelines every 6 months. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ATA Calculator | ESMO Interactive Guidelines |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/ata-calculator/id890053714/reviews) | **[4.8 (150 ratings)](https://appshunter.io/ios/app/esmo-interactive-guidelines/id1037353712/reviews)** |
| Number of ratings | 1 | **150** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 months** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 195 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [American Thyroid Association](https://appshunter.io/developer/890053717) | [European Society for Medical Oncology - ESMO](https://appshunter.io/developer/515544538) |

## 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


### ESMO Interactive Guidelines

[App page](https://appshunter.io/ios/app/esmo-interactive-guidelines/id1037353712)

Access concise, practical treatment recommendations based on the latest scientific research. This app provides interactive tools, algorithms, and calculators to support healthcare professionals in decision-making and guideline navigation.

**Highlights:** Concise treatment recommendations, Interactive decision-making tools, Treatment algorithms and calculators, Keyword search functionality, Bookmarking and note-taking, News and push notifications

**Features:** macOS Compatibility, 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 ESMO Interactive Guidelines free?

ESMO Interactive Guidelines is free to download, with no in-app purchases.

### Which has better reviews, ATA Calculator or ESMO Interactive Guidelines?

ESMO Interactive Guidelines is rated higher. ATA Calculator averages 3.0 out of 5 from 1 ratings, while ESMO Interactive Guidelines averages 4.8 from 150 ratings.

### Do ATA Calculator or ESMO Interactive Guidelines have ads?

Neither ATA Calculator nor ESMO Interactive Guidelines shows ads.

### Which is updated more often, ATA Calculator or ESMO Interactive Guidelines?

ATA Calculator ships an update every 9 months, and ESMO Interactive Guidelines every 6 months. Most recently, ATA Calculator was updated on October 3, 2026 and ESMO Interactive Guidelines on September 30, 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.*