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.

250+ iOS apps curated and reviewed
Out of 250+ free testosterone calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 2.7★ (3) | No | No | May 2026 | ||
| 2 | Free | — | No | No | May 2026 | ||
| 3 | Free | 4.4★ (7) | No | No | Aug 2026 | ||
| 4 | Free | — | No | No | May 2026 | ||
| 5 | Free | 2.5★ (41) | No | No | May 2026 | ||
| 6 | Free | — | No | Yes | May 2026 | ||
| 7 | Free | — | No | Yes | Sep 2026 | ||
| 8 | Free | 4.7★ (61K) | No | No | Sep 2026 |

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.





This app helps individuals on Testosterone Replacement Therapy (TRT) understand their hormone levels. It calculates remaining testosterone, predicts steady state timelines, and converts dosages for different injection frequencies. Designed for clarity and ease of use, it supports all major testosterone esters.