
Inventory optimization & Pre-ordersBy SunkarsLaunched September 21, 2026Updated September 25, 2026
Holdline launched on September 21, 2026. Shoplist is watching for its first storefront installs and tracking pricing in the meantime.
Apps merchants weigh against Holdline, with their own detected stores and ratings.
Get alerted on first storefront installs, review spikes, pricing changes, and listing edits.

Pre-Order/Sold Out/Coming Soon/Backorder/Pre-sale/Out of Stock

Pre-Order/Sold Out/Coming Soon/Backorder/Pre-sale/Out of Stock


Pre-order & hold/split out-of-stock items by ship date

Don’t miss out on additional revenue by offering Pre-Orders!

Turn out-of-stock items into revenue with oversell protection and clean theme blocks.
Turn out-of-stock products into revenue without the risk of overselling. Holdline enforces pre-order limits natively through Shopify checkout — no fragile scripts, no leftover code. Tag orders instantly for warehouse/3PL fulfillment, and get alerted the moment stock is back so you can end pre-orders in one click. Isolated virtual inventory keeps your real warehouse counts untouched. Built on Online Store 2.0 Theme App Extensions — clean install, clean uninstall.
Every number on this page comes from public storefront scans and the public Shopify App Store listing. If Shoplist shows Holdline on a store, it is there.
Read the data methodologyCompare
Detected stores, ratings, pricing, and momentum side by side.
Developer
Every app Sunkars publishes, with their detected reach.
Rankings
The ten apps gaining the most detected installs in each category.
Directory
Browse every app Shoplist tracks, by category, rating, and reach.