What's the best Android app for editing and annotating PDF files on the go?

PDF Reader & Editor Utility is a versatile application tailored for managing PDF documents on Android. It supports a wide array of editing functions, such as text modification, annotation with highlights, underlines, and freehand drawing, along with form filling that automatically detects fields in documents. Users can also merge multiple PDFs into one file or split large documents into smaller sections, which is particularly useful for organizing reports or consolidating receipts while traveling. In real-world scenarios, business professionals might use it to review contracts and add digital signatures during commutes, while students can annotate lecture slides or highlight key points in textbooks. Reviews indicate that the interface is intuitive, making it accessible for casual users. However, some feedback notes that the free version includes ads, and advanced features like OCR text recognition may require a premium upgrade. Despite these limitations, the app handles most common PDF tasks reliably, though heavy editing might still benefit from desktop software. Overall, it's a practical choice for anyone needing efficient PDF manipulation without complex setups.