I like that I'm able to use UPDF on my iPhone. The initial setup was easy peasy.

I mainly use UPDF to open and rework PDF documents for my personal needs and I find it very easy to use. I appreciate it because it is not tied to Adobe and offers great value for money. It allows me to insert or remove pages, combine various documents, and export to other applications. The initial setup was very simple.

I use UPDF for reading academic articles and appreciate the various annotation tools it offers. Additionally, I found it easy to set up UPDF initially.