Experience-Sampling Power Planner
Power, precision & feasibility for event- and location-triggered ESM/EMA studies
Starting the simulation engine…
The full statistical engine (R + lme4) runs entirely in your browser — nothing you enter is sent to a server. The first visit downloads it once (about 15–30 seconds on a typical connection); after that it starts instantly.
- Describe your research question — the planner picks the right multilevel model.
- Read power straight from a 2,000-replication grid, or simulate your exact design live.
- Solve for the sample size you need — even when the number of prompts per person is random.
Taking a while? Click anywhere to continue →