# Bio-T Testosterone calculator — user reviews

> 9 indexed App Store user reviews of Bio by Niedertronics, rated 2.50/5 from 41 ratings.

- Source: https://appshunter.io/ios/app/bio-t-testosterone-calculator/id308770722/reviews
- App overview in markdown: https://appshunter.io/ios/app/bio-t-testosterone-calculator/id308770722.md
- Rating breakdown: 5★ 8 · 4★ 6 · 3★ 5 · 2★ 3 · 1★ 19

## Most critical reviews (9 lowest-rated)

### 1/5 — ?

*2009-04-04*

?

### 1/5 — Hmmm

*2009-04-01*

Bioavalible isn't a word developer. Look it up.

### 2/5 — Needs updated

*2017-10-16*

Will not work with iOS11

### 3/5 — Needs to accept SI units

*2013-01-10, version 0*

Not a useful app at all if you have test results in SI units.  Online calculators allow you to choose units, so should this app.

### 3/5 — International units

*2011-05-18, version 0*

A version of this app with international units would be greatly appreciated.

### 5/5 — Great App!

*2015-02-01*

Great, simple and easy to use application!

### 5/5 — Superb

*2011-06-02*

This has to be the best handheld application for determining bioavailable testosterone levels ever written.  Ignore those over priced competitors, use this app!

### 5/5 — Great App, use it every day

*2011-01-19*

Great app for the urology/ andrology community

### 5/5 — Excellent!!!

*2009-04-12*

I use this every single day in practice and had to do it online. Now I don't have to go online and have it readily available. Thanks!

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-08.*