We build Shopify apps that help merchants sell before inventory arrives.
ZS PreSell & Back In Stock is made by Zilancer LLC. It turns sold-out and upcoming products into pre-orders, launch countdowns and back-in-stock waitlists, so a "Sold out" button stops costing you the sale. It runs inside your Shopify admin and on your theme through Shopify's own app extensions and pre-order selling plans.
Native integration with Shopify admin, themes, and checkout flow.
Designed to increase sales even when inventory is unavailable.
Campaigns switch on and off by stock, release date or quantity — no daily babysitting.
We identified a major problem: merchants lose sales during stockouts.
Pre-order, Coming soon and Notify me campaigns with countdowns and badges.
Native Shopify pre-orders, 10 storefront languages, and submitted to the Shopify App Store.
Campaign modes
Storefront languages
Plan to start
Support from real people