Free tools
Tools for online sellers and FOP sole proprietors
Calculate profit and delivery, issue an invoice with a QR code, check your taxes and prepare replies to customers. Free, no sign-up.
Free, no sign-up. Everything is calculated in your browser — we don't receive what you type.
Profit calculator
What's left from one order after fees, tax, ads and refused parcels.OpenNova Poshta delivery calculator
Cost, delivery date and how much you receive from a cash-on-delivery payment.OpenInvoice with a QR code
A PDF invoice and an NBU QR code: the customer scans it in their bank app and pays.OpenFOP tax calculator
Single tax, SSC (ЄСВ) and military levy for 2026, groups 1, 2 and 3 side by side.OpenCustomer message templates
Ready replies: order accepted, payment details, waybill (TTN), reminder, review.OpenUTM link builder
Tagged links for your bio, stories and ads, so you can see where buyers come from.Open
Рекс does it for you, on every order
Profit, waybills, invoices with a payment link and order statuses in a CRM for online sellers. Start for free.
Free plan forever, no card needed.