The intelligent companion for your GLP-1 journey. Track your doses, understand your medication's half-life, and visualize your weight loss progress — all in one private, secure app.
One-time purchase. No subscriptions. 100% Private.
Pepti isn't just a calendar — it's a scientific toolkit designed to help you optimize your treatment.
Know exactly what's in your system.
Pepti uses clinical pharmacokinetic data to estimate the active level of medication in your body over time. Avoid overlapping doses and understand why you feel side effects on certain days.
Connect the dots between your dose and your results.
Visualize your weight loss curve directly against your medication levels. See how your body responds to different dosages and stay motivated as the line goes down.
Find your sweet spot.
Nausea? Fatigue? Log it right when it happens. Pepti helps you correlate side effects with specific injection sites or dosage amounts, so you can adjust your routine for a smoother journey.
Never forget where you poked last.
Avoid skin sensitivity and stall patterns. Pepti remembers your last injection site — Stomach, Thigh, Arm — so you can rotate perfectly every time.
Your health data is yours. Period.
Built with a "Local-First" philosophy. Your sensitive medical data lives on your device, not in the cloud. No accounts to create, no servers to hack, and no monthly subscriptions.
Three simple steps to take control of your GLP-1 treatment.
Record your medication, dosage, and injection site in seconds.
Watch the pharmacokinetic model show exactly what's in your system.
Correlate weight, side effects, and dose timing to optimize your journey.
Built-in pharmacokinetic profiles for the most popular GLP-1 receptor agonists.
The Bio-Hacker
You love data and want to master your biology. Pepti's pharmacokinetic models give you the scientific edge to optimize every dose.
The Accountability Seeker
You need to see the results. Pepti's weight overlay and progress charts keep you motivated — even through the stalls.
The Anxious Newbie
New to injections and feeling nervous? Pepti tracks your sites, reminds you when it's time, and logs side effects so you don't have to worry.
Pepti is available as a one-time purchase on the App Store and Google Play. We believe in owning your tools, so there are no hidden monthly subscriptions or premium unlock fees. Buy it once, use it forever.
Pepti is optimized for GLP-1 receptor agonists and similar peptides. We currently have built-in pharmacokinetic profiles for Tirzepatide (Mounjaro, Zepbound), Semaglutide (Ozempic, Wegovy), Dulaglutide (Trulicity), and Retatrutide — plus the ability to add custom entries.
Different medications stay in your body for different amounts of time (this is called "half-life"). Pepti uses a mathematical model based on the specific half-life of your medication to estimate how much is still active in your system from previous doses. This helps smooth out the "peaks and valleys" of weekly dosing.
Yes, 100%. Pepti does not upload your data to any cloud servers. All your weight logs, medication history, and notes are stored locally on your phone. You have complete control over your data, including the ability to export it to share with your doctor.
Absolutely. Pepti includes a robust "Export Data" feature in the settings. You can generate a copy of your logs to email to your healthcare provider or keep for your own records.
Yes. You can set custom notification schedules to remind you when your next dose is due, ensuring you never miss a shot.