Question: Is there a tool that allows me to collaborate on PDFs and track feedback and approval workflows?

If you need a service to collaborate on PDFs and keep track of feedback and approval workflows, Bit.ai is a good option. It's a full-featured document collaboration service with features like interactive living documents, AI-powered writing and powerful tracking. You can create custom workspaces for clients and partners, monitor engagement in real time and share files with password protection.

Another option is LightPDF. This AI-powered service not only handles all PDF tasks, including conversion, editing and analysis, but also offers cloud sync and multi-device support. It's geared for both personal and professional use, so it's a good tool for collaborative PDF projects.

If you prefer a more conversational interface, check out pdfAssistant. This 24/7 AI chatbot lets you perform PDF tasks through a conversational interface, including conversion, merging and text extraction. It's a pay-as-you-go credit system, so it's cheap and easy to use, and good for professionals and students.

And HiPDF has a powerful collection of PDF tools, including chatting, summarizing and editing, with cloud storage and multi-language support. The service protects your data with encryption and international certifications, so it's good for individuals and businesses.