What's a good iOS app for filling out and signing PDF forms on an iPhone?

Flexi PDF is a solid option for filling out and signing PDF forms on your iPhone. It provides a user-friendly interface that simplifies the process of adding text, checkboxes, and signatures to your PDF documents. You can import forms from various sources, including email, cloud storage, or directly from your device. The app's signature feature allows you to create and save your signature for quick application to forms. Flexi PDF also offers features for organizing your PDFs, such as merging, splitting, and converting files. This makes it a convenient tool for managing all your PDF-related tasks on the go. While it has a 3/5 rating, many users find it useful for basic PDF form handling. It also supports cloud storage integration, allowing you to access and save your files to services like iCloud, Google Drive, and Dropbox.