Seyvd is a Mac backup app that runs incremental, encrypted backups to S3-compatible cloud storage on a schedule you choose. After the first full upload, only new or changed data is transferred. Backups run from the menu bar without interrupting your work.
How scheduled backups work on Mac
When a scheduled backup starts, Seyvd follows the same steps every time:
- scans your selected folders for files that are new or changed since the last backup
- splits changes into fixed-size chunks and deduplicates against existing data
- encrypts each chunk with AES-256-GCM before upload
- uploads only the new encrypted chunks to your S3-compatible storage
- records a timestamped snapshot you can browse and restore from later
The menu bar shows progress and status.
Why incremental backups save time and storage
The first backup uploads everything. Every run after that transfers only what has changed. Deduplication works at the chunk level, so even renamed or moved files do not trigger redundant uploads.
Scheduled runs finish faster because less data moves, and deduplication reduces the space repeated content uses.
Bandwidth controls for background backups
Seyvd includes bandwidth throttling with limits from 1 MB/s to 100 MB/s, so a scheduled run does not take over your network.
Handling files that change during backup
Seyvd tries to make a separate copy of each file with APFS cloning before reading it. When cloning is unavailable, it checks for changes and retries. Files that remain unstable are reported so you can review the backup. This is not a single snapshot of the whole volume.
When scheduled cloud backup matters
Scheduled backup fits when you want a Mac backup that runs without manual work and does not saturate your connection. If encryption matters most to you, read about encrypted Mac backup. For the full product overview, visit the main Seyvd page.