Startup Idea: PDF Manager with Statistics Features

Summary for idea #4023
Startup idea to develop a software that seamlessly manages PDFs in one location, allows combining documents with one click, and includes the ability to mark percentages, calculate averages, ranges, and other simple statistical operations. The software is meant to replace the need to manually insert statistical data in files, freeing more time for users.
Original submission by someone willing to pay to get a problem solved (not AI)

I am a part time worker currently, and I work mostly with managing files and information. A program that keeps PDFs in one location, allowing you to combine documents would be amazing for me, as there are few programs that allow you to do this seamlessly.

A program that allows me to seamlessly put together two documents with one click would be amazing for my work, my studies, and any important info I need, as it would allow me to keep track of important files.

An amazing feature for this program would be the ability to easily mark percentages necessary, and keep running totals of mathematical data over a few simple functions such as averages, ranges, etc. as these are difficult to keep track of when they change so quickly. I tried using Excel for statistics, but it fell very short in the PDF combination area. I searched for PDF combiners with statistic managers. Currently, I need to manually take statistics and put them into the files, which uses up a lot of my time.

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