Participants answer
your survey.

Book a demoSee how it works

Biometrics answer a different one.

human theories adds eye tracking and biometric measurement to your research — remotely, at scale, via iPhone and Apple Watch.

What it measures

Four signals. One session.

Gaze tracking

< 5ms

Attention doesn't lie. Every fixation is mapped — and so is everything participants never look at.

Where attention lands, and where it doesn't — sampled on every frame of your stimulus.

Biometric sync

120Hz

The body answers first. Heart rate and HRV, aligned to the exact frame that moved them.

Apple Watch signals, streamed live and time-aligned to the millisecond.

Remote studies

100% remote

The lab is wherever your participants are. Send a study code, not equipment.

Participants run sessions from their own iPhone — any city, any time zone.

Rich analytics

Raw export

Feeling becomes evidence. Heatmaps, synced timelines, and raw data you can take anywhere.

Gaze heatmaps over your stimuli, biometrics on one timeline, and CSV export of everything.

Explore a live study

12/12
0:00 / 0:10

01

Design your study

Upload stimuli, configure calibration, define your protocol in minutes.

02

Invite participants

Share a study code — sessions run on participants’ own iPhones, no lab required.

03

Analyse results

Heatmaps, segments, biometric timelines, and raw data export.

Start measuring

Ready to see the signal
self-report misses?

Join researchers using human theories to run gaze and biometric studies without the lab overhead.

Book a demo
Live demo

See a real study in action. 30 minutes, no prep required.

Free trial

3 studies. No credit card. Full access to analytics.