Guide
Semaglutide and tirzepatide are weekly injections on a titration ladder, with side effects that cluster around step changes and a result that only shows up over months. That is a tracking problem, and a reminder app is the wrong shape for it.
Standard semaglutide runs 0.25, 0.5, 1, 1.7 and 2.4 mg, four weeks apiece; tirzepatide runs 2.5 through 15 mg in six steps. Set the phases once and the schedule advances itself on the right dates, with a reminder before each step change. You can hold at a step, go back down one, or stop — none of which disturbs the history behind it. Map your own ladder before you start.
Nausea and appetite changes tend to spike after a step up and settle. Logged with a severity, they plot against your dosing timeline, so you can see whether week three of a new step is genuinely worse or whether you are remembering the bad days. That is the difference between deciding to hold a step and guessing.
Losing weight is easy to measure and easy to misread. What matters is what came off. A smart-scale or gym body-scan import brings in body fat, muscle mass and body water, so a plateau on the scale that is actually a recomposition reads correctly instead of looking like failure.
Put the vial price in once and every logged dose carries it — cost per dose, per month, cost per pound lost, and an estimate of what reaching your goal will cost from where you are now. Very few trackers compute the last one, and it is often the number that changes a decision.
HbA1c, fasting glucose, lipids and liver markers are the panel most people on a GLP-1 end up watching. Import the PDF from your lab portal rather than typing it, and put a marker, a dose and a body metric on one chart.
BioHack Track is free. Unlimited compounds, protocols, doses and history, no ads and no account — and the backup and CSV export are free too, so your data is never held hostage.
One that understands the titration ladder rather than treating every week as identical — so it advances the dose on schedule, warns you before a step change, and lets you hold or step back down without breaking your history. It should also take your weight, body composition and labs, because dose adherence alone does not tell you whether it is working.
Set the schedule once and log with one tap when you take it. BioHack Track shows the estimated level between injections from the compound's half-life — semaglutide's is about a week — so the chart reflects what is actually circulating rather than only marking the days you injected.
Yes, and side by side if you have switched. Both are in the compound library with their half-lives and standard ladders, and a switch mid-protocol keeps both stretches on the same timeline.
Yes. Enter the vial as you have it, in mg or units, and reconstitute with the built-in calculator if it arrived lyophilised. The app does not care where the vial came from.
No, and it should not. It maps the ladder your prescriber set, does the arithmetic and shows you the result. Dosing decisions are between you and them.
For personal tracking. Not medical advice, and not a substitute for your prescriber.