TechTool Reviews Rating: 4.6/5 (Excellent) Price: $179.99 (perpetual license) | $14.99/month (subscription)
Nitro supports 256-bit AES encryption, password protection, and digital signatures (including timestamping via third-party providers like GlobalSign). nitro pro pdf editor review
Nitro’s one-time purchase ($179) is 25% cheaper than Adobe’s annual subscription and includes batch conversion—a feature Adobe hides behind a $360/year "Sign 365" plan. TechTool Reviews Rating: 4
Note: Nitro Pro is only available for Windows. Mac users will need Nitro PDF Pro (a different, less feature-rich app) or look elsewhere. less feature-rich app) or look elsewhere.