The app that helps you lose weight better and faster with your pen

Doses, weight, side effects and nutrition in one place. Built for any pen: Mounjaro, Ozempic, Wegovy, TG, LipoLASS and compounded medications.

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Download on theApp Store GET IT ONGoogle Play

Works with every GLP-1 medication

Mounjaro Ozempic Zepbound Retatrutida Wegovy Generic Tirzepatide (TG) Rybelsus LipoLass Trulicity Saxenda Victoza Olire Compounded Semaglutide Compounded Tirzepatide Compounded Liraglutide

Staying on a GLP-1 treatment is harder than it looks

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Side effects

Nausea, fatigue, reflux and hair loss. GLP-1s go far beyond appetite.

💪

Losing lean muscle

Up to 40% of the weight you lose can come from muscle. Without protein, your strength goes with it.

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Forgetting your dose day

It's easy to lose track of your last injection, and consistency makes all the difference.

⚖️

The weight stops dropping

After a while it plateaus, and it's not always clear why.

The Monju app solves all of it

How it works

From quiz to results in 3 steps

Start free. See your plan in under 5 minutes.

1

Answer a few questions

Medication, doses, weight, goal and routine. The more details, the more precise your plan.

2

Get your personalized plan

Calorie, protein and water goals, a dose schedule and a progress forecast, all backed by science.

3

Track everything in the app

Log doses, symptoms, weight and meals. Get reminders and walk into your doctor's appointment fully prepared.

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Features

Everything your treatment needs, in one app

Every feature designed to solve the real struggles of pen users.

Everything in the palm of your hand

Your dashboard with weight, next dose, activities and nutrition and hydration goals — all updated in real time, every time you open the app.

  • Log your dose with one tap
  • Daily goals always in view
  • Real-time tracking

AI photo nutrition

Snap a photo of your meal and the app calculates protein, calories and water in seconds — so you can protect your lean muscle.

  • Automatic macro tracking
  • Protein and hydration goals
  • Logged in seconds
Tela de registro de refeição no Monju com informações nutricionais

See your weight and progress

Track weight, BMI and measurements and compare your progress photos side by side, so you can see how far you've come and stay on track.

  • Weight and BMI chart
  • Side-by-side progress photos
  • Doctor-ready report

Ask the AI assistant anything

An assistant trained on your treatment, ready to answer about doses, side effects and nutrition anytime.

  • Instant answers, 24/7
  • Knows your treatment
  • Support whenever you need it

Stories from people who use Monju every day

Real people on pen treatment, just like you.

"The protein counter saved my treatment. I stopped losing hair once I started hitting my goal every day."

Lívia

"I always forgot my injection day. Now the app reminds me, and I have the history to show my endocrinologist."

Fabiana

"I snap a photo of my food and it shows protein and calories right away. Before it was a spreadsheet I never filled out. Total game changer."

Marina

"Seeing my weight chart alongside my doses kept me motivated on the hard days. I'm already 12 kg down."

Carol

"I brought the report to my doctor and he adjusted my dose on the spot. He was impressed by the data."

Ana Carolina

"Simple to use and it fits into a busy day. It's part of my routine now — I open it every morning."

Renata

Everything you need to know

What is Monju?
Monju is the app that tracks your pen treatment end to end: dose, weight, protein, water, side effects and progress, all in one place with a plan built for your goal. It's what helps you get the most out of your pen and lose weight consistently.
Does it work with every pen?
Yes, whichever one you use. Monju works with Mounjaro, Ozempic, Wegovy, Zepbound, Saxenda, Trulicity and more, each with the right dose calculation for your medication.
Does it work with compounded semaglutide and tirzepatide (TG, LipoLass)?
Yes. Monju was designed for compounded users too, like generic tirzepatide (TG) and LipoLass, with dose and reconstitution calculations so you inject the right amount safely.
What features does Monju have?
Everything your treatment needs, in one app:
  • Dose reminders and logging so you never miss a day
  • AI photo nutrition that calculates protein, calories and water
  • Symptom tracking to keep an eye on side effects
  • Weight charts with dose markers
  • Doctor report ready for your appointment
  • AI assistant to answer your questions anytime
How does Monju help my treatment?
By keeping you in control: it reminds you of your dose, looks after your protein so you don't lose muscle, logs your side effects and shows your progress, so you lose weight consistently without stalling halfway there.
Can I share my data with my doctor?
Yes. With one tap, Monju builds a complete report (doses, weight, symptoms and progress) to bring to your appointment. Your doctor understands your treatment in seconds and adjusts it with greater precision.
Is my health data safe?
Yes. Your data is encrypted and used only to improve your experience in the app. We never sell or share your information with third parties.
How soon will I see results?
From day one you'll feel more organized and in control. Within a few weeks of logging, you'll start to see your patterns and what to adjust to speed up your results.

Your goal is within reach

Monju walks with you all the way. Free to start.

Build my free plan
Download on theApp Store GET IT ONGoogle Play