What's the best Android app for editing the text in a PDF I already have downloaded?

Adobe Acrobat Reader is a robust solution for making direct edits to PDFs stored on an Android device. While often seen primarily as a viewer, its editing capabilities are comprehensive for a free app. Users can modify text in existing documents, correct typos, or update information using a straightforward edit mode. The app also excels at filling interactive PDF forms, adding signatures, and annotating with highlights, sticky notes, and drawings. For professionals needing to review contracts or students working on annotated readings, this functionality turns a phone or tablet into a capable PDF workstation. Recent updates have smoothed out performance, though some tablet users note that the reading mode can occasionally behave oddly in landscape orientation, shrinking text or misaligning the page. For most standard editing tasks—from correcting a downloaded invoice to signing a permission slip—the toolset is more than sufficient. The interface is logically organized, placing editing tools front and center after opening a document. Integration with Adobe's cloud services is an option, but core editing works locally, which is a plus for handling sensitive documents offline.