Flexilay and Paythen are both built on Stripe and both let businesses spread payments without becoming a lender — so neither is buy now, pay later. The difference is in shape. Flexilay is layby built for ecommerce: the customer reserves an order at checkout and the goods are released once it's paid off. Paythen is a flexible payment-plan tool centred on payment links and invoicing, well suited to services and billed work.
If you sell products and want a true layby experience at checkout, or you also bill via Xero and QuickBooks, this page shows where each tool fits.
