Reviewers see Refrens as a simple, practical tool for quoting, invoicing, payment tracking, and basic business record-keeping. The most repeated praise is its clean interface, fast setup, minimal learning curve, and time-saving workflow, especially for creating professional documents, converting quotes to invoices, sharing by email or WhatsApp, and managing multiple clients or entities. Several users also highlight responsive support. The main drawbacks are limited invoice-only free usage, and requests for deeper customization, stronger reporting and analytics, more integrations, better mobile polish, and a few workflow features like purchase order conversion.