Pro App

ResellerProfit Pro

A local-first profit calculator for multi-platform resellers.

▶ Try the live demo (new tab) Buy on Etsy →

One-time payment $15 · No subscription

What is ResellerProfit Pro?

A local-first profit calculator for multi-platform resellers. Track profit per item across eBay, Etsy, Poshmark, Mercari, and Facebook Marketplace with per-platform fee rules. No account, no subscription, all data stays in your browser.

Unlike cloud-based apps that lock your data behind monthly fees, ResellerProfit Pro runs entirely in your browser. All your data — quotes, clients, schedules, inventory, finances — stays on your device. No account. No subscription. No tracking.

Key features

Multi-platform profit: eBay, Etsy, Poshmark, Mercari
Per-item ROI after fees, shipping, and ad spend
Bulk calculate profit across your inventory
Local-first — your data never leaves your device

How it works

Try the demo

Click "Try the live demo" above — it opens in a new tab. You get 90 seconds to explore the full app.

Buy on Etsy

One-time payment, you own the file forever. We email you a download link instantly.

Use forever

Open the file in any browser, anytime. Your data stays on your device. No subscription, ever.

Ready to try it?

The full app opens in a new tab. You get 90 seconds to explore every feature. After that, we'll show you where to buy.

▶ Open the live demo

Frequently asked questions

Do I need a subscription?

No. One-time payment on Etsy, you own the file forever. No monthly fees, ever.

Does my data stay private?

Yes. The app is local-first — all your data stays in your browser. Nothing is uploaded to a server, nothing is shared with us or anyone else.

Can I use this on my phone?

Yes. Single-file HTML apps work in any modern browser on phones, tablets, and desktops. They also work offline once loaded.