iPhone Apps to Synchronization

Joplin is a free and open-source note-taking and to-do application designed for users who value data ownership, privacy, and flexibility. It offers robust synchronization options, including cloud services like Dropbox, OneDrive, and Nextcloud, as well as WebDAV. With support for Markdown, powerful search capabilities, and cross-platform availability, Joplin is a versatile tool for organizing information and boosting productivity.

OmniFocus is a powerful task and project management application designed for individuals and teams who need advanced tools to stay organized and productive. Based on the Getting Things Done (GTD) methodology, it provides a structured framework for capturing, organizing, and completing tasks across multiple devices.