The companion app for Mounjaro weight loss.
Mounjaro (tirzepatide) is a dual GIP/GLP-1 receptor agonist, and tracking your journey on it should be just as simple as the weekly injection. WeightLytic ties your doses, food, protein and weight together — so every clinic conversation is backed by real data, not memory.
Week 14
Mounjaro
Next injection
Thursday · 8:00pm
7.5mg · Left thigh rotation
Supply
Pen #3 of 4
22 days left
Side effects
Total lost
−11.6 kg
Everything a Mounjaro user actually needs.
One app for your medication, your meals and your trajectory — instead of three apps and a notebook.
Mounjaro dose log
Record every injection with date, time, strength and site. Build a complete medication history you can hand to your doctor.
Reminders & site rotation
Smart injection reminders that fit your weekly schedule, plus a site-rotation map to keep absorption consistent.
Side-effect tracking
Log nausea, fatigue, appetite and mood against each dose, so you and your clinician can spot patterns.
Supply & refill alerts
Know exactly how many days of medication you have left and get a heads-up before you run out.
AI food & protein tracking
Snap a photo to log meals, and keep protein on target to help protect muscle while you lose weight.
Weight forecasting
See a projected trajectory from your own data — shown as a confidence range, never a guaranteed outcome.
Mounjaro works best with clear data.
Mounjaro (tirzepatide) is most effective when paired with consistent food, protein and weight tracking. WeightLytic brings it together so your progress is something you can actually see — and show your prescriber.
Doses
Logged with date, time, strength & site
Protein
Daily targets to help protect muscle
Supply
Refill alerts before you run out
Symptoms
Side effects tracked against dose
More on Mounjaro.
Common Mounjaro questions.
Can I track my Mounjaro doses in WeightLytic?
Yes. Log each weekly injection with the date, time, dose strength and injection site, building a complete history you can share with your clinician.
Does WeightLytic recommend or change my Mounjaro dose?
No. WeightLytic never suggests or adjusts medication doses — that decision belongs to you and your prescriber. We help you record and visualise what is happening so those conversations are better informed.
Will it forecast my weight loss on Mounjaro?
It projects a trajectory from your own logged weight and intake, shown as a confidence range rather than a guaranteed outcome. Everyone responds to tirzepatide differently.
Can I track protein and side effects too?
Yes. You can log meals with AI food photos, keep protein on target to help protect muscle, and record side effects like nausea or fatigue against each dose.
Is WeightLytic available yet, and what will it cost?
WeightLytic is launching July 2026. Join the waitlist to be first in and to lock in founding-member pricing; there will be a free tier at launch.
Get WeightLytic when it launches.
Join the waitlist to lock in founding-member pricing. Launching July 2026.
Also for: Ozempic · Wegovy · Zepbound · Retatrutide · all GLP-1 medications
WeightLytic is an independent app and is not affiliated with, endorsed by, or sponsored by Eli Lilly. Mounjaro is a registered trademark of Eli Lilly and Company. WeightLytic does not provide medical advice — always follow your prescriber.