Best GLP-1 tracker apps, honestly compared
We make one of the apps on this list, so read it with that in mind. What follows is the recommendation we would actually give: for most people on a pre-filled pen, one of the other four is the better choice, and this page says which and why.
Short version
If you use a pre-filled pen and want one app that does most things well, Shotsy is the strongest all-round choice and we would rather say so than pretend otherwise. Glapp is the best free option if vial inventory matters. Peptide Plug — ours — is the right pick specifically when your medication comes as a vial you reconstitute yourself, or when cost per dose and run-out dates are the hard part. Pep wins on food logging, Dosio on general health metrics.
The five, and who each is actually for
Reviewed September 9, 2026 from each product's own published pages. Features change; check current pages before deciding.
Shotsy — best overall for pens
The most complete native app of the group, and the one most people on a pre-filled pen should start with.
- Native iOS and Android with Apple Health sync
- Nutrition, water and side-effect logging
- PDF export for a clinician
- Large guide library in nine languages
- No stated reconstitution, cost or inventory features
Price: Free to download; premium tier exists but is not priced publicly
Glapp — best free vial inventory
The closest thing to Peptide Plug's inventory tracking in a free consumer app, with a genuinely good frame for the weekly cycle.
- Native apps plus a web version
- Vial inventory, remaining doses and expiry dates
- “Shot phases” view of rise, peak and fade
- Presents itself as free
- No stated reconstitution math, labs or export
Price: Presented as free; no paid tier published
Peptide Plug — best for vials and cost
Ours, and we will be specific about where it belongs: this is the tool for people whose medication arrives as a powder in a vial rather than a pen.
- Reconstitution, concentration and syringe-unit math
- Cost per dose and per month, recalculated at each dose step
- Vial run-out plus mixed-vial expiry windows
- Manual labs on the same timeline as doses
- 17 free calculators with no account
- No native app, no health-platform sync, no food logging
Price: Free for one active cycle; Pro $4.99/mo or $49.99/yr
Pep — best for food tracking
A polished multi-language tracker that is unusually honest about its own scope.
- Food logging with protein, fibre, calorie and water targets
- Apple Health sync; ten languages
- Cheapest annual plan of the group
- States it does not do cost, reconstitution, labs or inventory
- States it does not export clinician reports
Price: Free; Pro about $40/year
Dosio — best for broader health metrics
The widest general-health coverage — the right pick if you want one app for doses plus blood pressure and glucose.
- Blood pressure, blood glucose, nutrition and hydration
- Progress photos and daily dose-linked insights
- Full app access on the free tier
- No stated reconstitution, cost, labs or inventory
- Pro pricing varies by country
Price: Free; Pro price varies by country, 7-day trial
How to choose in one question
Does your medication arrive as a pre-filled pen, or as a vial you reconstitute?
| If this is you | Start with |
|---|---|
| Pre-filled pen, want one good app | Shotsy |
| Pre-filled pen, want it free with inventory | Glapp |
| Vial you reconstitute yourself | Peptide Plug |
| You want to know real cost per dose | Peptide Plug |
| You want to log food and macros | Pep |
| You track blood pressure and glucose too | Dosio |
| You also run TRT, HRT or peptides | Peptide Plug |
We make one of these apps, so treat this page accordingly — but the recommendations above are the ones we would give a friend. Where a competitor is the better choice, it is named as such.
Common questions
What is the best GLP-1 tracker app?
Which GLP-1 tracker is completely free?
Which app handles compounded semaglutide or tirzepatide from a vial?
Which tracker shows cost per dose?
Do any of these give medical advice?
Which works without installing an app?
Try the free tools first
Every Peptide Plug calculator runs in your browser with no account and nothing stored.
Open the free tools