Tools for living with MCAS

Have more good days.

Mast Cell Decoded builds practical tools to help people living with mast cell activation syndrome spot their patterns, plan around their triggers, and have more good days.

Try the free forecast About the project

The tools

Tools for better days

We're starting with a free daily forecast, with more tools on the way.

Available now

Weekly Forecast

A score from 0 to 100 each day for five known and suspected MCAS triggers, with a plain-English note on what's driving it.

Open the forecast →

Coming soon

Something new is in the works.

Coming soon

Something new is in the works.

Humble beginnings

It started with a diary

Mast Cell Decoded began with a symptom diary and a nagging question: do the rough days line up with something in the air? Tracking pollen, smoke, pressure swings and more by hand wasn't realistic, so we built a forecast that does it for you. It's only the first step, and more tools are on the way.