See What Actually Works for People Like You
PEERtrainer runs structured experiments where real people test routines, supplements, diets, and devices together - and share honest, measurable outcomes.
Three Simple Steps
Find an Experiment
Browse experiments by category, goal, or what interests you. Each one has a clear hypothesis, defined rules, and a set duration so you know exactly what you're signing up for.
Join and Follow the Protocol
Once you join, follow the structured protocol - use the product or routine as described, log your daily and weekly updates, and share honest reflections along the way.
See the Real Results
When the experiment ends, see run-level outcomes segmented by demographics and goals. Filter by people like you to understand what actually happened - not what someone claims.
What Makes This Different
This isn't a forum, a review site, or an influencer feed. It's structured citizen science with real accountability.
What We Measure
Every experiment includes a measurement plan with daily check-ins (adherence, quick metrics) and weekly reflections (subjective outcomes, detailed notes).
Outcomes are always self-reported and presented at the experiment level. We never claim “this works” — we show you what happened to the people who participated, segmented by demographics and goals.
What This Is Not
Ready to See What Works?
Browse live experiments and join one that matches your goals.
Explore Experiments