I read a lot of PDFs on my phone and I have enough tools to help me read so I am not sure how many people would find another tool useful unless there is an adde

I read a lot of PDFs on my phone and I have enough tools to help me read so I am not sure how many people would find another tool useful unless there is an added advantage you can find to provide. I would suggest you to not worry about if people want it, but just make it for your own learning growth. All the best!