MasterKasa by MasterKit

MasterKasa by MasterKit is positioned as a compliance-focused Shopify app for Ukrainian merchants who need to issue PRRO fiscal receipts for online sales. It supports both automatic and manual receipt creation, lets merchants connect a cloud signature key and choose a register, and can generate receipts when orders are paid or fulfilled. The app also handles refunds by creating return receipts tied to the original sale, and it supports prepayments and cash on delivery through chained part-payment workflows, which helps merchants manage final settlement requirements under Ukrainian law. Overall, the app appears to be built for stores that need a practical way to automate fiscal receipt issuance while staying aligned with local regulations.