iPhone Apps to Built-in PDF converter

MobiSystems OfficeSuite is a comprehensive cross-platform office productivity suite offering powerful tools for creating, editing, and managing documents, spreadsheets, presentations, and PDFs. Designed for both mobile and desktop users, it provides a seamless experience for professional and personal use.

VisiTouch, though discontinued, was an iOS application designed for viewing and converting Microsoft Visio diagrams (VSD, VDX, VSDX) on iPhone. It provided a convenient way to access and share your Visio files on the go, integrating features like PDF conversion and collaboration.

Polaris Office is a comprehensive office suite for cross-platform productivity. It offers a range of tools including word processing, spreadsheets, presentations, and PDF handling, all integrated for seamless workflow across different devices.

ThinkFree Office is a comprehensive office suite written in Java, providing a robust and cross-platform solution for document creation, editing, and collaboration on Windows, Linux, macOS, and Android.

Open365 is a comprehensive, open-source productivity suite offering cloud storage, office applications, and communication tools. Built upon a foundation of open-source technologies like KDE, Seafile, and LibreOffice, it provides a robust alternative to proprietary solutions, emphasizing privacy and control.

Apple iWork is a comprehensive office suite for macOS, iOS, and web, offering powerful yet user-friendly applications for word processing (Pages), spreadsheets (Numbers), and presentations (Keynote). It provides seamless integration across Apple devices and iCloud, enabling effortless document creation, editing, and collaboration.

WPS Office is a comprehensive office suite providing writing, presentation, and spreadsheet tools. It boasts high compatibility with Microsoft Office formats and a user-friendly tabbed interface, making it a viable alternative for various platforms including Windows, Linux, iOS, and Android.

Microsoft Office Suite is a comprehensive collection of productivity tools designed for individuals and businesses. It includes essential applications like Word, Excel, PowerPoint, and Outlook, providing robust capabilities for document creation, data analysis, presentations, and email management. Seamless integration and cloud connectivity enhance collaboration and accessibility.