# T Calc vs EAU

The clearest difference is update cadence: EAU at every 3 months against T Calc's every 19 months. T Calc's advantage is iOS requirement (13.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

T Calc ships an update every 19 months, EAU every 3 months. The most recent releases landed on September 16, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | T Calc | EAU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/t-calc/id989710656/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 2 MB | 115 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [ViralMD](https://appshunter.io/developer/989710655) | [European Association of Urology](https://appshunter.io/developer/827656229) |

## What reviewers say

### T Calc

[App page](https://appshunter.io/ios/app/t-calc/id989710656)

This tool helps clinicians quickly and accurately calculate circulating free and bioavailable testosterone levels. Input lab values for Albumin, SHBG, and Testosterone to get precise results, reducing manual calculation errors.

**Highlights:** Calculate free testosterone, Calculate bioavailable testosterone, Input lab values (Albumin, SHBG, Testosterone), Reduce manual calculation errors, Fast and accurate results, Reference ranges provided

**Features:** macOS Compatibility

**In-app purchases:** none


### EAU

[App page](https://appshunter.io/ios/app/eau-urology/id1477207244)

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

**In-app purchases:** none


## Frequently asked questions

### Is T Calc free?

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

### Is EAU free?

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

### Do T Calc or EAU have ads?

Neither T Calc nor EAU shows ads.

### Which is updated more often, T Calc or EAU?

T Calc ships an update every 19 months, and EAU every 3 months. Most recently, T Calc was updated on September 16, 2026 and EAU on September 10, 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.*