What is this? This tool builds an .osc (Open Scale Chain) file for self-hosting an online study. An .osc file chains together consent forms, multiple scales, branching conditions, and completion redirects into a single runnable study session.
Two ways to use this:
Tip: A server with cPanel is an easy graphical way to deploy — upload the unzipped folder via File Manager. No command-line access required. Scales can be selected from the OpenScales catalog or uploaded as custom .osd files.
Variables available throughout the chain. Use ${name} in URLs and text.
The default server/collect.php works with the server package. Change to an absolute URL (e.g., https://yourserver.com/study/server/collect.php) if your study files and data endpoint are hosted at different locations.
Steps execute in order. Drag to reorder.