Free GLP-1 Tracker

Why we built a free tracker without subscriptions

GLP-1 medications like Wegovy, Ozempic, Mounjaro, and Zepbound are already punishingly expensive. With insurance denials and out-of-pocket compounding costs ranging from $200 to $1,000 every single month, asking patients to pay an additional $19.99/month ($69.99/year) to simply record what day they took an injection is an unnecessary financial burden.

Patients who use generic notes apps or paper logs lose out on critical clinical calculations: calculating active drug half-life, timing dose intervals before food noise surges, and tracking injection quadrant rotation to prevent tissue scarring. GLPme fills this gap by delivering a dedicated clinical tool that treats tracking as medical utility, not a subscription trap.

Feature comparison: GLPme vs Shotsy vs Generic Apps

Most weight loss apps were built for counting calories, not for managing delayed gastric emptying, weekly subcutaneous injections, and multi-week steady-state accumulation. Here is how dedicated GLP-1 tracking compares:

The pharmacokinetic half-life curve engine

A weekly GLP-1 injection does not stay flat in your system — it peaks at 24 to 48 hours and decays according to its molecular elimination half-life. Semaglutide has an elimination half-life of approximately 7 days (168 hours), while tirzepatide has a half-life of roughly 5 days (120 hours).

GLPme plots your exact rolling steady-state accumulation curve. This visual mathematical model helps answer the three most common patient questions:

• Why Day 2 nausea happens: Blood plasma concentrations peak at $T_{\max}$ (24–48 hours post-shot), when gastric emptying is slowed to its maximum extent.
• Why Day 5 and Day 6 "food noise" returns: Blood levels trough toward baseline before the next scheduled injection, causing appetite signaling to reawaken.
• Steady-state accumulation: It takes 4 to 5 half-lives (4 to 5 weeks) at any fixed dose for blood levels to reach true metabolic equilibrium.

You can also test your numbers online using our free GLP-1 half-life calculator.

Built-in support for compounded vials & syringes

Over 40% of GLP-1 patients in the United States currently use compounded semaglutide or tirzepatide from licensed 503A and 503B pharmacies. Brand-name apps designed exclusively for pre-filled auto-injector pens (like the single-dose Wegovy or Zepbound pens) fail completely when a patient is handed an insulin syringe and a 5 mg/mL vial.

GLPme has a native compounded math engine: select your vial concentration, enter your prescribed milligram dose, and the app visually confirms the exact syringe unit mark (e.g. 10 units, 25 units, 50 units on a U-100 syringe) before you draw medication.

Why on-device health privacy matters

Your prescription weight management journey, injection dates, body weight fluctuations, and gastrointestinal side effects are deeply sensitive personal health data. Commercial health tracking apps routinely incorporate third-party advertising SDKs, analytics brokers, and cloud data aggregation that can expose your medical treatment to data brokers.

GLPme was architected from day one on local iOS on-device storage. Your data never leaves your iPhone. There are no mandatory user accounts, no social login requirements, and no remote servers logging your medical records.

How to start logging in under 60 seconds

1. Download GLPme: Install the app from the Apple App Store on your iPhone.
2. Select Your Molecule: Pick Semaglutide (Ozempic/Wegovy) or Tirzepatide (Mounjaro/Zepbound), or enter custom compounded concentrations.
3. Log Your Last Injection: Record the date, dose (in mg or units), and injection location (abdomen, thigh, or arm).
4. View Your Active Curve: Instantly see your estimated active medication level and projected steady-state clearance.

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