I’ve been testing FLY PDF for the past few weeks, and it’s become my go-to for quick PDF tasks. The merge feature saved me during a client presentation—I combined three separate reports into one file right from my phone while waiting at the airport. The text recognition is decent too; it picked up most content from a scanned invoice, though it stumbled on some handwritten notes (which, to be fair, most apps do). Where it really shines is the annotation tools. Highlighting, underlining, and adding sticky notes feels smooth, and the freehand drawing works well with a stylus. I used it to mark up a lease agreement before signing, and the exported file kept all my notes intact. The UI is clean and doesn’t overwhelm you with options—great for casual users. That said, power users might find it a bit limited. There’s no batch processing, and the OCR isn’t as accurate as dedicated desktop software. Also, the ads in the free version can be distracting if you’re working on something lengthy. But for students, freelancers, or anyone who occasionally needs to tweak a PDF without firing up a computer, FLY PDF is a reliable pick. It’s lightweight, straightforward, and honestly does what it promises.