esito
Self-experiment tracker

Stop guessing.
Test it properly.

Find out whether a diet, a supplement or a habit actually moves how you feel. Run a fixed-length experiment, check in 20 seconds a day, and get a verdict backed by your own numbers.

Download on the App Store Available on Google Play
Free to start· No account needed· Your data stays on your phone
21:42esito
Verdict · Day 21 of 21
Magnesium glycinate
Finished today · 20 of 21 check-ins
Works for you
Nice - your energy is genuinely up this round.
+18% vs your baseline
baselineexperiment
Energy +18%
Sleep quality −4%
Mood +6%
How it works

Three weeks. One variable. A real answer.

01

Pick a template

Start from experiments that already know what matters - keto, fasting, a new supplement. The right metrics come pre-loaded. No blank page.

02

Check in daily

20 seconds before bed. Only the metrics your experiment cares about - nothing else to fill in, no tracking fatigue.

03

Read your verdict

Plain language first, numbers right behind it. "Your energy went up - +18% vs your baseline." Not a grid you have to decode.

Templates

Eighteen experiments, ready to run.

Nine free, nine Pro. Each one comes with the metrics that actually matter, picked by someone who knows the territory. Adjust anything - or just press start.

Test a new supplement Popular 14 days · 4 metrics
Keto transition 21 days · 7 metrics
Intermittent fasting 16:8 14 days · 6 metrics
Sleep optimization 14 days · 5 metrics
Daily meditation 21 days · 5 metrics
14 days off social media 14 days · 5 metrics
Creatine Pro 30 days · 4 metrics
Caffeine reset Pro 14 days · 5 metrics

+10 more in the library.

Esito app - the experiment templates screen
Esito app - the verdict screen: your energy went up, +18% vs baseline
The verdict

A verdict, not a vibe.

At the end of every experiment you get a plain-language answer backed by your before-and-after numbers. And when the data isn't there, Esito says so.

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One variable at a time. The app nudges you to change one thing per experiment, so the result actually means something.

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Honest about uncertainty. "Not enough data yet to call it" is a real answer here - a null result never gets spun into a win.

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Correlation ≠ causation - and the app says so, out loud. n=1 has confounders; rigor is the point.

Pricing

Free to run. Pro to go deeper.

Free

$0 - forever

  • ✓1 active experiment at a time
  • ✓9 free templates - 18 in the library
  • ✓Full verdicts with numbers
  • ✓Baseline mode between experiments
  • ✓CSV data or a full PDF report - never paywalled
  • ✓Cloud sync across your devices

Your data is yours. Export stays free no matter what - that's a trust thing, not a feature.

Pro

Everything in Free, plus the deep end.

  • ✓Unlimited experiments running at once
  • ✓The other 9 templates - Creatine, Caffeine reset, Deep work
  • ✓Patterns and comparisons across your history
  • ✓Apple Health / Health Connect + on-device note themes
$2.99 monthly
$29.99 yearly · best value
$49.99 lifetime

Your $40 stack deserves a real answer.

Pick a template tonight, check in tomorrow, and know in three weeks - instead of wondering for another year.

Download on the App Store Available on Google Play
Free to start · No account needed · iOS & Android