Get 2.4x more out of your GLP-1 dose
Zenday builds a personal plan around your medication and keeps you on it, so you can reach your goal faster.
Get started
Next dose
Thursday
Nausea
EasingLast 7 days
Week 16
−11.2kg
You’re on track for your goal
The medication is only half the story. Zenday is the other half.
GLP‑1 helps you lose up to
25% of body weight
We make sure you get there
Get your plan
Everything in one app
Your guided GLP-1 journey
What Zenday changes
Log your week
Doses, side effects, progress.
See what’s working
Clear next steps, tuned to your week.
Lose 2x more weight
Your weight
People who track consistently lose about twice as much.
Start trackingManage side effects
Spot what triggers your side effects — and dodge it next dose.
Manage mineLoved by 1,000,000+ members.
A plan, not an app
“I answer a couple of taps a day and it quietly rearranges everything else. Down 9 kilos since June.”
Sarah M.
Sheffield, UK
First app I’ve kept
“I’m not techy at all and this is the first app I’ve kept past a week. Everything is big, clear and one tap.”
Charlotte G.
Portland, OR
Saved my week four
“The week-4 slump hit and the app had basically predicted it — adjusted my meals and kept me going. That would have been the week I quit.”
Rachel J.
London, UK
Does what it says
“Simple. Clear. Works.”
Jan W.
Rotterdam, Netherlands
The tips are gold
“The side-effect tips alone are worth it. Ginger tea before my jab-day dinner — who knew.”
Laura T.
Swansea, UK
Dose change, no drama
“Went up from 5mg to 7.5mg and dreaded it. Zenday changed my week’s plan before I even asked, and the rough days I braced for mostly never came.”
Nicola F.
Denver, CO
My Monday ritual
“Lost 24 lb in 15 weeks. The trend graph is the first thing I check on a Monday.”
Becky S.
Charlotte, NC
All in one place
“My husband started asking what I’m doing differently. It’s not magic — it’s having it all in one place.”
Emma J.
Copenhagen, Denmark
Headaches, cracked
“It spotted that my headaches came the day after my jab and told me to front-load water. Gone in a fortnight.”
Susan M.
Dublin, Ireland
Questions, answered.
Anything else — write to us at support@zenday.health.
What is Zenday?
Zenday is a companion app for people taking GLP-1 medication for weight loss. It tracks your food, activity and doses in one place, helps you manage side effects, and reminds you when your next shot is due. It's built for the part your prescriber can't cover: the other 6 days and 23 hours of the week.
Does Zenday prescribe or supply GLP-1 medication?
No. Zenday doesn't prescribe, sell or ship medication, and it isn't a replacement for your doctor or pharmacist. It's a tracking and support tool you use alongside whatever treatment your prescriber has already put you on.
Which medications does Zenday work with?
Zenday works with all branded and compounded GLP-1 medications, in both weekly and daily forms. You set your medication, dose and injection day when you join, and Zenday adjusts reminders and side-effect guidance around them.
Will Zenday actually help me lose more weight?
A 2026 study found people using a GLP-1 companion app alongside their medication lost 2.5x more weight in their first six months than those on medication alone. The reason is unglamorous: consistent dose timing, enough protein, and catching side effects before they derail a week.
How does Zenday help with side effects?
You log symptoms like nausea, fatigue or constipation as they happen, and Zenday gives you practical adjustments for that specific symptom — what to eat, what to avoid, and when it's worth calling your prescriber instead of waiting it out. Over time it flags which days in your dose cycle tend to be hardest for you.
What happens when I come off the medication?
This is where most people regain, and it's the part Zenday is built to prepare you for. From day one you're building the habits that carry the result — protein targets, portion sizes, movement you'll actually keep doing — so that when the medication stops, the routine doesn't. Zenday shifts into maintenance mode automatically when you log your last dose.
Is my health data private?
Yes. Zenday is built privacy-first. Your food logs, weight and side-effect history are yours, and we don't sell your data to advertisers or data brokers. Zenday also runs in your browser, so there's nothing to install and nothing sitting on your phone with a weight-loss logo on it.
How do I get started?
Take the 2-minute quiz. It asks about your medication, your dose, how long you've been on it and what you're finding hardest, then builds a plan around those answers. You'll see your plan and pricing before you pay anything.