About Moggly

Moggly is a free pet weight tracker. It's developed by scientists and grounded in published veterinary research. It's not a veterinary service, and it doesn't provide veterinary advice.

The core idea is simple: weigh regularly, follow your pet's own pattern over time, and notice when something might be worth a chat with your vet. For puppies and kittens, published Waltham growth research adds helpful context along the way.

Every pet is different. Moggly is built for steady, longitudinal tracking — not rigid targets or one-off numbers. Food and portion decisions stay between you and your vet; the app helps you bring a clearer picture to that conversation.

Designed for pet owners worldwide, with clear controls for exporting and deleting your data.