Data Sync is a secure feature that ensures information entered on one device is automatically updated across all others, such as a tablet, phone, or computer. It keeps expense logs, schedules, or contact lists consistent without requiring manual re-entry. Syncing occurs over encrypted connections, and no personal data is shared with third parties. Users can choose which data to sync and when, maintaining full control over their information. It works offline first, then uploads changes when a connection is restored, ensuring reliability even in low-connectivity areas. Designed for families, educators, and small teams, it eliminates duplication and confusion while preserving privacy. No cloud storage of sensitive records occurs—only user-approved data is synchronized safely.