The companion app your
GLP-1 journey deserves
Starting Mounjaro or Zepbound is a big step. Flux keeps you organised, motivated, and on track — so you can focus on feeling better, not managing spreadsheets.
Everything you need, one glance away
No more juggling notes, reminders, and separate apps. Your countdown to the next dose, goal progress, weight trends, and AI-powered insights all live on a single dashboard built for your journey.
Day-to-day fluctuations lie. Trends don't.
It's normal to weigh more on a Tuesday than you did on Monday — that doesn't mean you're failing. Flux cuts through the noise with moving averages, trend analysis, and predictions that show you the real trajectory of your progress.
Medication works best when your habits do too
GLP-1s are powerful, but they're not the whole picture. Staying hydrated, hitting your protein target, and keeping active all make a real difference. Flux tracks water, calories, protein, steps, and sleep in one place — with Apple Health syncing the numbers automatically.
Where did I inject last? What dose was I on?
Questions you shouldn't have to remember the answers to. Flux logs every injection with dosage, site, and date — and shows your weight change, average calories, and protein for each dose period so you can see exactly how each week went.
Know what's happening between doses
Flux goes beyond simple logging. A built-in pharmacokinetic model estimates your medication levels throughout the week, smart injection site rotation prevents overuse, and side effect tracking gives you something concrete to share with your doctor.
Packed with thoughtful details
Built by someone on the same journey, Flux is designed around the details that actually matter week to week.
Dose Countdown
A live countdown ring so you always know when your next injection is due
AI Insights
Personalised commentary that puts your numbers in context
Weight Predictions
Projected dates for when you'll reach each milestone weight
Smart Site Rotation
Suggests your next injection site based on weight loss and side effects
Apple Health Sync
Weight, calories, protein, steps, and sleep sync automatically
Weigh-in Streaks
A 52-week grid that rewards daily consistency and builds momentum
Medication Levels
Estimated trough, current, and peak tirzepatide concentration
Share Your Journey
Create beautiful progress cards to share on social media
Side Effect Tracking
Log and analyse side effects so you have something concrete for your doctor
Injection Reminders
Push notifications so you never miss a dose
Backup & Restore
Export and import your data anytime — it's yours
Private by Design
All data stays on your device. No accounts, no cloud, no tracking
Your journey is already hard enough
Tracking it shouldn't be. Download Flux and let the app handle the details so you can focus on the results.