Your Personal Health Science Lab
Trialist turns your iPhone into a data-driven discovery engine. Design self-experiments or let automatic analysis uncover patterns from Apple Health—no lab coat required.
Trialist turns your iPhone into a data-driven discovery engine. Design self-experiments or let automatic analysis uncover patterns from Apple Health—no lab coat required.
Run on/off experiments or let automatic analysis discover hidden patterns. Rich logging with doses, timing, and custom units.
Deep HealthKit sync for sleep, HRV, resting HR, steps, workouts, and more— background updates, zero manual entry.
Percentage changes with confidence intervals, timeline & distribution charts, adherence tracking, and baseline comparisons.
100% on-device. No accounts, no cloud, no trackers. Export JSON or generate professional PDFs when you want.
Most health apps just show you your data. Trialist helps you understand what changes it— whether it’s magnesium before bed, cutting coffee after 2pm, or morning sunlight.
iPhone & Apple Watch. HealthKit required for automatic metrics.
Does Trialist require an account?
No. There are no accounts and no cloud.
Where is my data stored?
On your device, privately. You can export anytime.
Which metrics are supported?
Sleep (duration, efficiency, REM/deep), HRV, resting HR, steps, workouts and more.
Trialist is privacy-first. All computations and storage are on your device. We do not collect or sell personal data. For medical decisions, consult a healthcare professional.