Calibr8 measures the calories you really burn from your food log and weigh-ins. Every week it tells you to eat more, less or the same, explains why, and can make the change for you.
Start freeA phone showing the Calibr8 weekly review for an example user, with the numbers Calibr8's engine computed for him, 1 to 7 June: we lowered your target to 2,050 kcal a day on average, from 2,200, 2,170 on training days and 1,890 on rest days, changed automatically, because for two weeks his loss was below the optimal pace, 0.22 kg and then 0.20 kg against a plan of 0.5 kg a week, with all 7 days logged.
Every week Calibr8 checks your weigh-ins against your food log. Ate more and still on pace? Your calories go up. Stalled? They come down a small step. Every change tells you why.
Start freeFood logging
Type a name, point the camera or describe the meal. Calibr8 works out the calories and macros for the portion you ate.
Swipe to explore
A chatbot has to guess. Octava sees what you eat, what you weigh and what you really burn, and the app does every calculation for you.
Octava's advice comes from our nutrition science library: 1,035 entries on 53 topics, citing more than 500 studies.
Ask why your calories changed. It answers from your weigh-ins and the calories you really burn.
It sees what you've eaten today and picks a recipe that fits what's left, your diet and your allergies. One tap adds it to your log.
Tell it your weight or measurements in plain words. It fills in the entry for you to check.
9 months apart.
“This app has helped me lose weight track my calories its genuinely helped me with so much in my healthy life”
12 weeks apart. Logged his food in Calibr8 from May 2026.
“It's great app and simple to use even for beginers. You can track callories and progress easy. Overall it's usefull.”
“… I even thought something was wrong with my metabolism. But with the app, it all turned out to be simple math. My target is 1,800 calories a day. When I track them, it works. …”
“Extremely easy to use and very intuitive. It has made tracking my diet so much easier. Everything I need is calculated automatically for me. …”
“… a great helper for anyone who wants to track their eating more easily and be better informed about the choices they make.”
“Great app! It helps me a lot and, most importantly, it motivates me to eat healthier! I recommend it!”
“Amazing app works perfect for keeping me on the rails with my progress.”
“Great app! It’s easy to use, well-organized, and really helpful for keeping track of my nutrition. Highly recommend!”
“The application is easy to use and everything worked smoothly. …”
“perfect for tracking my progress and its been helping me track my daily calorie intake”
“This is your game changer! …”
Meet the coach behind Calibr8
I coach people on training and nutrition, adjusting their plans as their progress changes. I built Calibr8 to bring that ongoing review into an app.
My training in exercise and nutrition science taught me to read studies, assess the evidence and apply it to real coaching decisions.
Your goals, food logs and weight trends guide your personalized nutrition.
Hristiyan Marinov, founder of Calibr8
Pricing
Premium adds weekly target reviews and Octava, your AI coach.
Track your food and weight.
€0/ month
No time limit. No card required.
Your daily tracking tools
Upgrade from your account when you want Premium.
Know when to adjust your targets, and why.
€83.99/ year
14 days free, then €83.99 billed yearly. Equivalent to €7 a month.
Everything in Free, plus
€0 today. Card required.
If you start the yearly trial today
Today
You get all of Premium. Nothing is charged.
After 14 days
The trial ends and €83.99 is charged for the year, unless you cancel first.
For 30 days after that
Ask for a full refund, no questions asked.
Premium renews automatically monthly or yearly, according to the plan you choose. Cancel before the next renewal to avoid the next charge. Cancel a yearly trial before it ends to avoid being charged.
Have a different question? Ask us at support@calibr8nutrition.com
Premium runs until the end of the period you paid for. After that, your food diary, weight trend and targets stay on Free with no time limit. Past weekly reviews, Octava chats, meal templates, body measurements, water and steps are kept but locked, and they unlock if you come back.
Open Subscription & Billing in your profile and press Request Refund within 30 days of your first charge. The full amount goes back to the payment method you used.
Your targets are ready on day one. After your first seven days you get a week one review: what you ate against your targets and how your weigh-ins look. The first review that can move your calories comes after two weeks with at least three weigh-in days in each, because one week cannot separate water from fat.
Not yet. Calibr8 works out what you burn from your weigh-ins and your food log, so it does not need a watch to set your targets. We plan to add sync with watches and health apps after our App Store launch.
No. Octava runs on Anthropic's Claude, and Anthropic is barred by contract from training on what we send it. To answer you, Octava reads a summary of your profile, including your goal and targets, your recent weight, your intake over the last 14 days and your latest weekly review. Your account data is stored primarily in the EU.
Have a different question? Ask us at support@calibr8nutrition.com
Free tracking. No time limit. No card required.
The Calibr8 blog
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How researchers separate the effects of meal timing from total daily protein.
Read the articleNutrition3 min read
What one trial found about these everyday foods, and where the findings stop.
Wellbeing3 min read
Research on social comparison and eating behavior, including what an association can’t prove.
