Pro-grade, single-file HTML apps for people who resell on eBay, Etsy, Poshmark, and Mercari. Track inventory, calculate per-item profit after fees and shipping, and export CSV reports — no account, no subscription, all data stays local.
Click the app above to open the live demo in your browser. No install, no signup. After 90 seconds, you'll get a taste-it-then-buy-it prompt — buy the full version on Etsy and own it forever, with no subscription.