Inventory & Cross-listing apps for Whatnot sellers

Keep stock in sync across Whatnot, eBay, Poshmark, TikTok Shop and more.

Any price Free Free plan Paid

Any platform Web iOS Android Chrome extension Desktop

SellDeck

Locks eBay and Depop listings during Whatnot shows and tracks show profit

Free plan · from $8.99/moInventory & Cross-listing4

Shopify to Whatnot

Exports Shopify products to a Whatnot-ready CSV

PaidInventory & Cross-listing2

Underpriced AI

Photo-to-listing pricing tool with a free extension for Whatnot forms

Free plan · from $5/moInventory & Cross-listing3

FAQ

Can I sync Whatnot inventory with eBay?

Cross-listing tools copy listings between marketplaces and help delist sold items.

Is cross-listing allowed?

Check each marketplace policy; tools only automate what you could do by hand.

What should I compare?

Supported marketplaces, auto-delist, bulk editing and monthly price.