What's the best iOS app for creating documents and collaborating with a team in real-time?

Google Drive is a comprehensive cloud storage and productivity suite that serves as a strong solution for team-based document work. Its strength lies in the direct integration of Google Docs, Sheets, and Slides within the app, allowing users to create and edit files without switching to separate applications. For real-time collaboration, multiple users can work on the same document simultaneously, with changes syncing instantly and comment/mention functionality built-in for clear communication. This is particularly useful for remote teams, students working on group projects, or non-profit boards managing shared files, as noted in user reviews highlighting cross-platform reliability. The app provides granular sharing controls, enabling users to set specific viewer, commenter, or editor permissions for any file or folder. While the interface can feel busy with numerous features, its core functionality for collaborative creation is robust. A notable feature for mobile use is offline access, allowing users to mark files for availability without an internet connection. Some users report that very complex spreadsheets or documents with intensive formatting can occasionally behave differently on the mobile apps versus the desktop web version, but for the vast majority of collaborative text and data tasks, the performance is reliable and consistent across devices.