PASS 2025 Sample Size Software – 30-Day FREE Trial

Download PASS 2025 and receive a 30-day trial license key to evaluate the leading sample-size software for clinical & epidemiological studies. No credit card required; Windows-only.

Overview

The PASS 2025 free trial lets you fully evaluate the industry-standard sample-size software before purchase. After downloading the setup file, you receive a 30-day trial license key that unlocks every procedure (with a minor alpha restriction) so you can run power and sample-size calculations for clinical, epidemiological and pharmaceutical studies.

When you decide to buy, simply enter the permanent license key—no reinstallation required. PASS never transmits your study data; it only reports anonymous usage statistics to help improve the software.