The GLP-1 tracker app that keeps up with your week

You've had the pen for three weeks. You're fairly sure the last shot was Sunday — or was it Monday, because Sunday was the birthday dinner? The nausea seemed worse this week, but you can't say whether that's the new dose or the takeaway. None of this is a crisis. It's just the small, constant fog of keeping a weekly medication in your head.

A GLP-1 tracker exists to clear that fog.

What should a GLP-1 tracker actually hold?

A calorie app treats the medication as a footnote. On a GLP-1, the medication is the spine of the story, and everything else hangs off it:

• The dose comes first. Date, time, strength and — for injections — the site. Every other entry is read against it.
• What you ate, mainly whether it was enough. With a quieter appetite, the usual risk is falling short on protein, fiber and fluids. A 2025 joint advisory from four obesity and nutrition societies names adequate protein and hydration among the core nutritional priorities during GLP-1 therapy.
• How you felt, and when. Nausea two days after a dose step means something different from nausea on an ordinary Tuesday. Without the timing, a symptom is just a mood.
• The trend, not the day. Weight moves with water and salt. The line across weeks is the honest signal.

Why does logging so often fall apart?

Because it's too much work at exactly the wrong moments — the day you feel rough is the day you skip the entry. So the test for any tracker is simple: can you log a dose in a few seconds, from your lock screen, half-awake? If not, the record will have holes where it matters most.

How does Holt handle each part?

Doses and pills. Set your medication, dose and schedule once — weekly injection or daily pill, branded or compounded. Holt reminds you on dose day, puts a Live Activity on your lock screen, and keeps a history of every dose and injection site so rotating is automatic.

Meals and protein. Take a photo of your plate or scan a food; Holt estimates calories and protein. It's there to show whether you're getting enough, not to make you eat less.

Side effects. A tap for nausea, fatigue, constipation, appetite changes or something of your own. Holt lines them up against your dose days, so patterns surface on their own.

Weight, water, habits. A goal, a trend line, a water widget on your home screen, and Apple Health sync if you want it.

What we'd track

If you only log four things, make it these:

1. Every dose — with the site, so you never wonder where the last one went.
2. One line on how you felt — especially in the 72 hours after a dose step.
3. Protein at each meal — a rough yes/no is already useful.
4. Your weight a few mornings a week — for the trend, not the verdict.

Bring that history to your next appointment and the "how's it going?" question answers itself. Holt can put it into a short doctor-visit report.

Start your log in Holt — free on iPhone