T Calc vs EAU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
T Calc
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.
- Calculate free testosterone
- Calculate bioavailable testosterone
- Input lab values (Albumin, SHBG, Testosterone)
- Reduce manual calculation errors
- Fast and accurate results
- Reference ranges provided
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The Free Testosterone and Bioavailable Testosterone Calculator application is designed to assist clinicians in accurately determining circulating bioactive testosterone levels. Simply plug in the appropriate lab values and push a button for fast, accurate results. How to use the Free & Bioavailable Testosterone Calculator The Free & Bioavailable Testosterone Calculator reduces the risk of errors that can occur when performing complicated calculations by hand. To use the app, input current lab values into the specified boxes for: - Albumin - SHBG - Testosterone Once lab values are in place, press the calculate button and let the Free & Bioavailable Calculator app do the math. Free & Bioavailable Testosterone Testosterone and dihydrotestosterone (DHT) circulate in plasma unbound (free approximately 2-3 percent), bound to specific plasma proteins (SHBG), and weakly bound to non-specific proteins such as albumin. The SHBG-bound fraction is biologically inactive because of the high binding affinity of SHBG for testosterone. Bioavailable testosterone measurement includes the free plus the weakly bound. Free testosterone measures the free fraction. Certain health conditions and medications, such as corticosteroids, can affect SHBG levels, impacting total serum testosterone concentration. Combining albumin, sex hormone-binding globulin (SHBG) and testosterone levels provides a more precise measurement of total serum testosterone concentration. Free Testosterone Reference Range Males (16 years and above): 9-30 ng/dL Females: 0.3–1.9 ng/dL Bioavailable Testosterone Reference Range Males: 20-29 years: 83-257 ng/dL 30-39 years: 72-235 ng/dL 40-49 years: 61-213 ng/dL 50-59 years: 50-190 ng/dL 60-69 years: 40-168 ng/dL >69 years: not established Females (non-oophorectomized) 20-50 years (on oral estrogen): 0.8-4.0 ng/dL 20-50 years (not on oral estrogen): 0.8-10 ng/dL >50 years: not established This website/app has been developed in part through an educational grant from Besins Healthcare (UK) Ltd. The company has no editorial control on its content. IMPORTANT LIMITATIONS: This calculator is an educational tool and should not be solely relied upon in making any clinical decision. No responsibility whatsoever is assumed for its correctness or suitability for any given purpose. Please consult your health care provider first for any health concerns. Additionally, the calculated free and bioavailable testosterone should not be relied upon in situations with potential massive interference by steroids binding to SHBG (e.g. in women during pregnancy, in men during treatment inducing high levels of DHT or Mesterolone.
EAU
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This the European Association of Urology’s official app! Use it to stay informed on the latest news, manage your membership and find out more about the Association’s activities. This is also the way to access virtual events on your mobile devices! When you attend the EAU's Annual Congress or other meetings, you can use this app to view an up-to-date scientific programme, find essential logistical information and stay informed on last-minute updates.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | T Calc | EAU |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 19 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 2 MB | 115 MB |
| Age rating | 4+ | 12+ |
| Developer | ViralMD | European Association of Urology |
In-app purchases
T Calc
No in-app purchases
EAU
No in-app purchases









