Bio-T Testosterone calculator

Medical

Only for iPhone

Free · Designed for iPhone

iPhone

Calculate free and bioavailable testosterone using the validated Vermeulen algorithm. The Bioavailable Testosterone calculator calculates bioavailable and free testosterone from total testosterone, sex hormone binding globulin (SHBG) and albumin. It is intended to be used by qualified healthcare professionals. The application is an adaptation of the algorithm published in Vermeulen A, Verdonck L, Kaufman JM: A Critical Evaluation of Simple Methods for the Estimation of Free Testosterone in Serum, J. Clin. Endocrinol. Metab. Oct 1, 1999; 84: 3666-3672.

Ratings & Reviews

  • 2.5
    out of 5
    41 Ratings

Completely rebuilt for modern iOS. New interface, same trusted Vermeulen algorithm.

Version 2.0

The developer, Niedertronics, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    • Seller
      • Craig Niederberger
    • Size
      • 810 KB
    • Category
      • Medical
    • Compatibility
      Requires iOS 16.6 or later.
      • iPhone
        Requires iOS 16.6 or later.
      • Mac
        Requires macOS 13.5 or later and a Mac with Apple M1 chip or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2026 Craig Niederberger
  • Developer Website
  • Privacy Policy

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