Free, PRO, and ULTRA
You can use the free plan without adding a card. It includes unlimited bookmarks and folders, shared pages, title search, HTML import and export, your own wallpapers, and IFTTT.
PRO adds full-text search, 30-day recovery, broken-link check, JSON and CSV export, Google Drive backup, bookmark versions, shared-page analytics, password-protected pages, hiding the Bookmer logo, a custom domain, API keys, and your own icon collection. ULTRA adds the PRO tools plus further workspace features. Current prices are on the pricing page.
Change a paid plan
Open the menu and choose Settings, then Subscription. Choose Manage subscription. That opens the subscription page on Bookmer ID, where you can update payment or cancel. On a free account the menu shows Upgrade to PRO instead. Paid features stay available until the end of the period you already paid. The library itself stays.