This came back for a 2-day sale; I literally was able to get DocXter with just minutes to spare before it became unavailable again. My initial impression is good! I have been looking for a reliable document scanner/chat for grad school PDFs. The purpose is not to replace me reading PDFs but help me solidify my knowledge and also search docs when I need to refresh info.

I have tried other PDF chats at AppSumo with mixed results. Often they don't seem to index the document that well. With DocXter, I've only had a chance to upload a 30 page paper and chat with it, but it worked great and was able to give me the summary and other points I needed.

I like the options of the different prompts but only tried the educational literature review so far.

I think the main downside is that the credit system is a bit complex and confusing; you eat credits by uploading as well as having docs searched, in addition to output. A simplified and more generous credit system would probably be better in the long run. But overall, I'm cautiously optimistic and giving this a provisional 5 stars.