Introducing Biblo: your personal AI fitness agent

By the Biblo team · October 21, 2026

You can describe lunch in a sentence. Logging it should not have to be more complicated than that.

Meet Biblo, a personal AI fitness agent you can text. Send a photo of your food or tell it what you ate, and get calorie and macro estimates back in iMessage.

The basic service is currently free on iPhone. You do not need a separate download to try the texting experience.

Food tracking in a conversation

You might take a photo of lunch. Or you might send “two eggs and toast” after you've finished breakfast.

Biblo uses what you send to estimate calories, protein, carbs, and fat. You can add details or correct the portion in the same conversation. Ate only half? Say so, then check the updated result.

Later, ask for a summary of what you've logged or your daily totals.

The numbers are estimates. Photos and descriptions can miss ingredients or portions, so reviewing and correcting the result is part of the experience.

See exactly how calorie tracking by text works.

Why we chose messages

A meal is already a moment in your day. We wanted the interaction with Biblo to be a quick photo or message attached to that moment, rather than a separate routine to remember.

Messaging also leaves room for the follow-up. You can explain what was in the meal, change a detail, or ask about the day without treating each step as a different task.

The bigger idea: a personal fitness agent

We are building toward an agent that connects tracking, coaching, and action.

Our vision includes help with planning workouts, making food decisions, and carrying out tasks you approve, such as ordering a meal.

You can use Biblo through iMessage now. A companion app is planned for reviewing progress, managing plans, and controlling connected accounts and permissions. The two are intended to work together: quick messages when you need help, and a visual view when you need to see the bigger picture. The app is not available yet.

Read about our approach to an AI fitness agent.

Try Biblo

Open Biblo on your iPhone and send a food photo or describe what you ate.

On Android? Join the waitlist. For other questions, see the FAQ.