Track your weekly Mounjaro® KwikPen or Wegovy® dose, injection rotation sites, side effects, and weight progress in one private UK app. Your decisions with your doctor, your records with you.
After an injection, active levels rise, peak, and gradually steady. Haftra visualises this weekly curve so you know what to expect each day. Informational only; dose titration remains the decision of your prescriber.
Choose your weekly pen and injection day to discover your pharmacokinetic curve, peak absorption, and half-life kinetics.
Haftra shows your doses, sites, symptoms and weight on one timeline, so you can bring those records to your clinician reviews.
Haftra supports all MHRA-authorised weekly GLP-1 and dual GIP/GLP-1 pens available across private clinics and NHS pathways.
Retatrutide (LY3437943), developed by Eli Lilly, is an experimental triple agonist targeting GIP, GLP-1, and Glucagon receptors. It is currently being evaluated in Phase 3 TRIUMPH clinical trials.
A rough estimate derived from clinical trial averages. It is not a personal result; your own course may differ.
Average Weekly Rate: ~0.3 kg / weeks
UK guidelines advise rotating sites to preserve healthy tissue. Click any area to explore the rotation protocol.
At least 5 cm to the right of your navel. Plentiful subcutaneous fat.
Inject at a 90-degree angle. Count to 6 seconds before withdrawing the needle.
Haftra remembers your previous injection location and suggests the next zone.
Automated 4-dose plan with timely reminders on injection morning and key transition days.
Interactive map remembering previous injection locations to protect healthy tissue.
Pharmacokinetic simulation displaying peak concentration and elimination half-life.
Linear projection calculating your estimated target date based on recorded trend data.
Quick journal for nausea, fatigue, or heartburn ready for clinician discussions.
Custom water target tracking with automatic Apple Health activity synchronisation.
Take a photo of your plate; Haftra AI recognises the food and shows protein and estimated energy. The numbers are estimates, and you correct them before saving.
Recognizes each food on the plate and lists its protein and calorie estimate on its own line.
Half, three quarters, all of it, one and a half or double: the numbers follow how much you ate.
Each meal is saved with the day of your dose cycle, so you can see how your appetite changes across the week.
A downsized copy goes to Google Gemini only to make the estimate and is not stored anywhere.
A Haftra+ feature that needs an account. You can always log a meal by hand. Haftra sets no calorie targets and does not score food; an estimate is not a measurement.
Haftra exports the exact clinical metrics UK prescribers and pharmacists need to see.
Clear audit of dates, doses, and titration steps.
Severity log for nausea, fatigue, or indigestion.
Smooth progression curves demonstrating sustainable change.
Haftra Clinical SummaryLog your weekly dose, water intake, and weight straight from your Apple Watch. Automatically syncs with your iPhone.
Log injections and hydration with a single tap.
Gentle haptic reminders on dose day and the preceding evening.
Check your upcoming injection date directly on your watch face.
Feedback from patients managing their Mounjaro KwikPen & Wegovy doses.
“Haftra took the guesswork out of my KwikPen doses. Knowing my peak concentration days has made planning social meals so much easier.”
“My private prescriber praised the PDF summary during my review. It made ordering my next pen completely straightforward.”
“No accounts, no ads, just my data on my iPhone. The tummy and thigh rotation reminders are indispensable.”
View anonymous side effect trends from other users taking the exact same pen. No synthetic numbers: signals only appear when reported by multiple patients.
A symptom must be independently logged by at least 3 distinct users before appearing as a signal.
Signals are strictly separated by active ingredient so Mounjaro and Wegovy experiences are never conflated.
Reports are not linked to your identity, and a symptom only appears once at least three people have reported it.
Sources for the clinical averages we cite on the site and in the app. Each card links to the peer-reviewed paper or official announcement.
Clinical Outcomes: In a 72-week trial of 3,127 adults, mean weight change with the highest dose of orforglipron (36 mg) was -11.2%, compared with -2.1% on placebo.
Clinical Outcomes: In the Phase 2 trial of retatrutide, a GIP/GLP-1/glucagon triple agonist, the 12 mg dose produced a mean weight loss of 24.2% at 48 weeks. Phase 3 (TRIUMPH) trials are ongoing.
Clinical Outcomes: In 751 adults without diabetes, mean weight change over 72 weeks was -20.2% with tirzepatide and -13.7% with semaglutide.
Clinical Outcomes: In adults with obesity and moderate to severe sleep apnoea, tirzepatide reduced breathing events per hour by an average of 25 to 29 over 52 weeks, compared with about 5 on placebo. The FDA approved Zepbound for this use in December 2024.
Clinical Outcomes: In 3,417 adults over 68 weeks, mean weight change was -20.4% with cagrilintide-semaglutide and -3.0% on placebo.
Clinical Outcomes: In 17,604 adults with established cardiovascular disease and no diabetes, weekly semaglutide 2.4 mg lowered the combined risk of cardiovascular death, heart attack and stroke by 20% compared with placebo.
Haftra is a tracker first; core recording features are free forever. Haftra+ unlocks pharmacokinetic modelling, weekly comparison reports, and physician consultation summaries.
Log your injections, pen stock, weight, and daily vitals with complete privacy.
Unlimited access to all pharmacokinetic curves, weekly comparison reports, and doctor summaries.
Pay once, own all current and future Haftra+ features forever.
In accordance with App Store guidelines and medical safety principles:
It does not diagnose, recommend a dose, or set an interval. It records the plan a clinician gave and follows it.
It does not provide injection technique instruction. The vial diagram counts doses; drawing up medication is demonstrated by your prescriber.
It sets no calorie or diet targets. Meal notes describe what was eaten without scoring or judging choices.
The medication level curve is an illustrative pharmacokinetic model derived from published half-lives; it is not a direct blood measurement.
Stock and expiry safety warnings are never gated behind a paywall; safety features remain free for all users.
Health data is among your most private information. To protect it, Haftra works without a mandatory account.
You can use the app without ever creating an account; your records then stay only on your phone.
Your progress photos never leave your device and are not uploaded to a server, even when you are signed in. The one exception is a meal estimate (Haftra+) that you start yourself: a downsized copy of that photo goes to Google Gemini for the estimate and is not stored anywhere.
The app shows no ads and your data is never sold. If you installed Haftra from an ad, only the fact that the install happened is reported to Meta, in aggregate. If you have an account, short usage events without any health data are kept on our own server. You can permanently delete your account and all your records from within the app.
Haftra is a dedicated tracking app for UK Mounjaro and Wegovy users, featuring 6-zone rotation mapping, 7-day dose schedules, symptom journals, and strict on-device privacy.
UK clinical guidance advises rotating injection sites across tummy, thigh, and arm areas to prevent lipohypertrophy. Haftra marks your previous site and suggests the next zone.
Yes. Haftra is free to download from the UK App Store with complete dose tracking, rotation maps, and weight charts without any mandatory sign-up.
Haftra visualises drug elimination curves using published half-life kinetics (~5 days for tirzepatide, ~7 days for semaglutide), displaying anticipated peak absorption days.
Yes. Haftra allows you to review your dose history, symptom timeline, and weight progress to share easily during clinician consultations.
Without an account, your health records stay only on your device. If you create an account, your records are backed up on our server in the European Union. Progress photos never go to the server. We don't sell your data, and we use only three providers to run the service: Supabase (account and backup), Google Gemini (only for a meal photo estimate you start yourself; the photo is not stored) and Meta (only an aggregate report of installs that came from an ad, with no health data). Full details are in the privacy policy.
Haftra AI is the meal scan that comes with Haftra+. It recognises the food in a photo of your plate and gives an estimate of protein and calories; you choose the portion and can correct the numbers before saving. A downsized copy of the photo goes to Google Gemini for the estimate and is not stored. The estimate is not a measurement, and Haftra sets no calorie targets.
iPhone, iPad & Apple Watch. Free, no account needed.
Scan the QR code with your phone camera to download from the UK App Store.
