You can try the Light and Regular plans free for 3 days. Each store can use the free trial once.
Note: When the free trial ends, the selected paid plan is billed automatically. If you do not want to continue, change to the Free plan or uninstall the app before the trial ends.
From "Plans" in the app menu, choose the Light or Regular plan, then approve it on Shopify's plan approval screen.
Open Shopify admin → Settings → Apps and sales channels. If "Free trial" appears next to "RuffRuff Table of Contents," you are in the free-trial period.
Prerequisite: If a development store previously had a paid plan at no charge, the free trial is not applied after the store is transferred or published.