What's the best Android app for filling out PDF forms and adding signatures on the go?

FLY PDF is a strong contender for users who regularly need to complete PDF forms or add signatures from their Android device. The app recognizes interactive form fields, allowing text to be typed directly into text boxes, checkmarks to be placed, and dropdowns to be selected. A dedicated signature tool lets users draw a signature with a finger or stylus, which can then be resized and placed precisely on the document. Once completed, forms can be saved as a new PDF or printed. For real-world scenarios like signing a rental agreement while traveling or filling out a job application on a break, this functionality eliminates the need for printing and scanning. Reviews indicate the form-filling process is generally reliable, though some users note that very complex forms with advanced scripting can sometimes behave unexpectedly. The app's straightforward approach means it doesn't include deep workflow features like cloud service integrations for sending signed documents directly, which might be a limitation for power users. However, for the core task of completing and signing forms, FLY PDF provides capable, no-fuss tools.