Culsin ‑ B2B Registration Form

Culsin, officially listed on the Shopify App Store as Culsin ‑ B2B Registration Form, is a Shopify app in the Accounts and login category. Add a B2B registration form to your storefront without touching any code. Customers submit company details and VAT IDs, you review applications in a clean dashboard, and approve or deny with a single click. Approved customers are tagged, set tax exempt, and optionally linked to a Shopify B2B Company record. Custom fields write to customer metafields. Shopify Flow triggers and actions included. Works on any Shopify plan.

Culsin offers a free plan and a single paid plan at $25/month. The free plan includes Unlimited applications, Custom form fields, EU VAT ID validation via VIES, and Shopify Flow triggers and actions. The paid plan unlocks advanced features like additional integrations, automations, and deeper customization.

Yes — Culsin offers a free plan alongside paid options. The free plan includes Unlimited applications, Custom form fields, and EU VAT ID validation via VIES. Paid plans start at $25/month for advanced features.

Culsin launched on May 22, 2026.

Culsin does not currently carry Shopify's Built for Shopify badge. The badge is awarded to apps that meet Shopify's published standards for performance, ease of use, and merchant value — many high-quality apps operate without it.

Merchants commonly compare Culsin with Sami B2B Lock,Password Protect, BSS B2B Lock, Login & Password, Helium Customer Fields, and Locksmith. Each alternative covers a similar use case but differs on pricing model, integration depth, and the specific themes merchants praise in reviews — see the alternatives section above for a side-by-side.