Pet-sim food & movement journal

The food journal that never judges.

Tell Grumzi what you ate and how you moved — in plain words or a quick photo. Your hamster reacts, your streak grows. No charts, no targets, no red numbers. Ever.

You logged lunch. That's it — that's the whole job. 🎉

Say it like a human

“Pasta and a coke” is a perfectly good log. Too tired to type? Snap a photo of your plate and Grumzi figures it out.

Your day, with a face

Grumzi mirrors how your day is going — cozy, snacky, or victory-lap. One glance tells you everything a dashboard would, without the dashboard.

Energy only adds up

Movement earns energy. Meals never take anything away. Streaks celebrate showing up — not perfection.

Your health data never leaves your phone.

Steps and workouts are read on-device and never uploaded. Meal photos are looked at once to log your meal, then gone. No ads, no tracking, no selling your data — the hamster keeps your secrets.

Read the privacy policy