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Samsung Calendar: what 39 low-star reviews complain about

We read 39 one-to-three-star reviews written between 2026-08-04 and 2026-09-09 and kept the ones that describe a specific unmet need. Grouped with reviews of other apps that say the same thing, they land in 9 repeated complaints. Store listing.

What reviewers complain about

• Won't stop asking for contacts permission
• Won't let me add them
• Watch ai schedules fail to sync across devices
• Sync does not work as expected, possibly device dependent
• Shared calendars disappear from the list after creation
• Security vulnerability to spam events
• S pen handwriting does not sync across devices
• Requires duplicate entry attempts
• Randomly deleting events
• Persistent after reinstall

The opportunities these reviews point to

1. 0180Shared calendar app preserving free core organization features3 of 90
2. 0281Calendar app with reliable data persistence and backups2 of 70
3. 0378Locked — subscribe to read this opportunity2 of 21
4. 0448Locked — subscribe to read this opportunity2 of 2
5. 0570Locked — subscribe to read this opportunity1 of 14
6. 0657Locked — subscribe to read this opportunity1 of 3
7. 0756Locked — subscribe to read this opportunity1 of 3
8. 0846Locked — subscribe to read this opportunity1 of 2
9. 0944Locked — subscribe to read this opportunity1 of 2

Score out of 100, then how many of the cluster's reviews are about this app out of its total. Category: Productivity.