# HLCalc

> Visualise half life of administered substances over time

Canonical page: [https://chrome-stats.com/d/hlcalc.sl](https://chrome-stats.com/d/hlcalc.sl)

## Overview

- **ID:** `hlcalc.sl`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** SL Software
- **Category:** HEALTH\_AND\_FITNESS
- **Downloads:** 19
- **Version:** VARY
- **Last updated:** 2023-02-15
- **First published:** 2023-02-15
- **Publisher country:** GB
- **Data as of:** 2026-09-15
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=hlcalc.sl)
- **Website:** [http://www.slsoftware.co.uk](http://www.slsoftware.co.uk/)
- **Privacy policy:** [http://www.slsoftware.co.uk/hlcalc-privacy/](http://www.slsoftware.co.uk/hlcalc-privacy/)

## Description

Half life - How long does it take for a substance to reduce in half, in this case when administered as a drug. That drug could be any relevant compound, anabolic or androgenic steroids, Benzodiazepines, SSRI&#39;s etc etc.<br><br>When taken repeatedly the levels of each substance in blood can increase. This is not always easy to visualize given dose and frequency so HLCalc graphs it out for you.<br><br>Doctors, athletes of all sorts, and those just interested in PED&#39;s will find this useful to visualize how single or multiple compounds in various doses will affect the body.<br><br>You can set HLCalc to remind you when to take medication and you can even send &amp; receive medication cycles so a doctor for example could send a patient an HLCalc file which can be loaded into their personal copy.<br><br>Store as many different medication cycles as you wish and add / remove drugs from the database to suit your own needs.

## Rankings

- #2,622,553 — Overall

## Similar extensions and apps

- [Half-Life Calculator For Meds](https://chrome-stats.com/d/com.nothing.half_lifeformeds) — 2,437 users, 4.78 / 5
- [Half Life & Decay Calculator](https://chrome-stats.com/d/com.Half_Life_Decay) — 385 users
- [Calc Rx](https://chrome-stats.com/d/com.DabblingBadger.Calc_Rx) — 321 users
- [Half-Life Calculator](https://chrome-stats.com/d/com.sanca.halflife) — 15 users
- [核醫藥物半衰期及劑量計算](https://chrome-stats.com/d/app.vercel.nuclear_medicine_calculator_7b2j.twa) — 9 users
- [Ordily](https://chrome-stats.com/d/com.ordily.app) — 41 users
- [LabQuants](https://chrome-stats.com/d/com.labquants.app) — 295 users
- [薬剤電卓＃](https://chrome-stats.com/d/com.ChemonoSoft.YakuzaiDentaku) — 573 users
- [Halflife: Caffeine Tracker](https://chrome-stats.com/d/com.tigerbrandsglobal.halflife) — 6 users
- [Kalkudis](https://chrome-stats.com/d/com.sugarwanto.kalkulatorsehat) — 23 users
- [Calculeo](https://chrome-stats.com/d/pl.softwebo.calculeo) — 109 users
- [Calculadora de Dosis](https://chrome-stats.com/d/com.sgh.calmed) — 78,322 users, 4.14 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/hlcalc.sl)