What's the best iOS app for annotating PDFs and converting them to other formats on the go?

PDF Editor is a practical solution for users who need to handle PDFs and file conversions directly from an iPhone or iPad. For tasks like signing contracts, marking up lecture notes, or converting reports for further editing, this app combines essential features in a single interface. Key tools include text highlighting, underlining, and adding handwritten signatures or typed comments to PDFs. The conversion functionality allows files to be transformed into formats such as Word, Excel, PowerPoint, and images, which simplifies sharing and collaboration. In real-world scenarios, a professional might use it to quickly annotate a draft proposal and convert it to a Word document for team revisions, while a student could mark up a PDF textbook and save sections as images for study guides. User feedback often highlights the app's intuitive design and speed for basic operations. However, some reviews note that processing very large files can occasionally lead to slowdowns or crashes, and the free version includes advertisements. While it may not replace desktop-grade software for complex edits, PDF Editor offers a reliable set of features for everyday mobile use. Its integration with cloud services like iCloud and Google Drive adds convenience for accessing files across devices. Overall, this app serves as a versatile companion for on-the-go document handling, balancing functionality with accessibility.