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SimpleCal: Simple Calendar: what 45 low-star reviews complain about

We read 45 one-to-three-star reviews written between 2026-03-05 and 2026-09-20 and kept the ones that describe a specific unmet need. Grouped with reviews of other apps that say the same thing, they land in 5 repeated complaints. Store listing.

What reviewers complain about

• Unreliable storage×2
• Unhelpful faq×2
• Recurring data loss×2
• Random event deletion×2
• Random deletion of all events×2
• Complete data loss×2
• Very slow adding events
• Update wiped all calendar data
• Unresponsive customer support
• Unreliable sync

The opportunities these reviews point to

1. 0179Calendar app with reliable data persistence and backups25 of 80
2. 0280Locked — subscribe to read this opportunity4 of 96
3. 0375Locked — subscribe to read this opportunity1 of 26
4. 0457Locked — subscribe to read this opportunity1 of 5
5. 0548Locked — subscribe to read this opportunity1 of 4

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