If you are using 13.3.0 as a legacy license, it remains a capable tool for basic editing, form filling, and OCR on older macOS versions. However, for 2026, it is highly recommended to upgrade to Nitro PDF Pro 14 or higher for better security, performance, and compatibility.
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 Nitro PDF Pro Essentials 13.3.0
✅ Often praised for a clean, Ribbon-style interface similar to Microsoft Office. If you are using 13
❌ In later 2024/2025, users expressed significant dissatisfaction regarding support and the transition of "perpetual" licenses to subscription models. Experiencing technical issues with a 13