A Philanthropic Initiative

See the pattern
behind how
you feel.

Mast Cell Activation Syndrome hides in patterns. The MCT-1 wearable biosensor and companion app turn scattered symptoms into something you can finally read — with over 2,000+ downloads on iPhone and Android.

Download the app Meet the MCT-1

The MastCell Tracker MCT-1 wearable biosensor

2,000+Downloads on iOS & Android

7-dayBattery on a single charge

Real-timeContinuous biosignal capture

NonprofitCare over profit, always

Inside the MCT-1 biosensor — interactive board

The device

A biosensor made for continuous wear.

The MCT-1 sits against the skin and quietly reads your biosignals around the clock — no wires, no fuss, up to a week between charges. Tap a glowing point to look inside.

Tap a component to open the inspector

Explore the MCT-1 →

The back of the MastCell Tracker MCT-1 wearable biosensor

The app

Months of symptoms, one clear picture.

Symptom scores, trigger correlations, and biosignal trends come together in a dashboard designed with patients — so a rough month becomes a readable story.

01 Log symptoms and triggers in seconds
02 See the patterns behind your flares
03 Export clinician-ready reports

See the app →

Care, not profit

We answer to patients, not shareholders — and we're building coverage so cost is never the barrier.

See how coverage works

MastCell Tracker is a nonprofit. Any surplus goes back into research, patient assistance, and access.

Get started

Start reading your body's notes.

Join over 2,000 people already tracking their symptoms, triggers, and biosignals with MastCell Tracker — free on iPhone and Android.

App Store Google Play

MastCell Tracker for iPhone & Android

See the patternbehind howyou feel.

A biosensor made for continuous wear.

Months of symptoms, one clear picture.

Start reading your body's notes.

See the pattern
behind how
you feel.