Patients do short hand exercises at home in front of a webcam. The care team sees how each one is changing between appointments, without new hardware.

0hand landmarks tracked per frame
0movements measured: pinch, extension, rotation
<0 minper session, from home
Hospital General Universitario Gregorio Marañón

We are developing FixedGap with the neurology team at Hospital General Universitario Gregorio Marañón, in Madrid.

Supported by

AWS
Bosch
Universidad Complutense
Real Colegio Complutense
Comunidad de Madrid
Saturno Labs
Hospital General Universitario Gregorio Marañón

“Short arcade-style games in the browser, under five minutes, in front of a standard webcam.”

Nothing to install or wear. The patient opens a link, sits in front of the laptop and plays.

The patient, at the kitchen table

A patient playing from his kitchen table, hand raised in a pinch in front of the laptop

The gap

Recovery is measured in hospital. Then it goes home.

012345678901234567890×5
days with a hand measurement
out of 90

After discharge, the next measurement is the follow-up visit, weeks later. Between visits, nobody knows whether the hand is improving.

With FixedGap, a short game at home becomes a measurement most days. Same movements, same metrics, in the clinician's dashboard.

See the product ›
01

Capture

The patient does a short task. The webcam records it in the browser.

02

Track

Twenty-one hand landmarks are located on every frame.

03

Measure

Landmark trajectories become the same set of measurements, every session.

04

Review

Clinicians see trends, adherence and alerts for each patient.

Session results, adherence and alerts for every patient in one view, ordered by who needs attention first.

The clinical dashboard ›
Trends per patient

Each measurement plotted session after session.

Adherence

Who played, when, and for how long.

Alerts

Patients who drop or stop playing move to the top of the list.

The founders at the Harvard T.H. Chan School of Public Health, Boston, June 2026

A team from Madrid across engineering, business and medicine, with a physician advising on the clinical side. We met at a Harvard hackathon, came second worldwide at the final in Boston, and are now preparing the first clinical validation study.

We are looking for neurologists, rehabilitation clinics and hospitals interested in evaluating the product and taking part in clinical validation.