To give you the most relevant information, are you asking about this version because you are: from an old PDFpen license? Experiencing technical issues with a 13.3.0 installation? Considering a purchase of a "lifetime/perpetual" license? Let me know so I can help with specific advice! Nitro PDF Pro and PDF Pro Essentials 13.3 - TidBITS Talk
❌ Some users reported that it could be slow to load or laggy with large, complex documents.
❌ In later 2024/2025, users expressed significant dissatisfaction regarding support and the transition of "perpetual" licenses to subscription models.
✅ Often praised for a clean, Ribbon-style interface similar to Microsoft Office.