Has some core problems
Doesn’t do or have an option to do full screen alerts for before the event only the start time. Mine doesn’t output sound, so overall not helpful for my needs
Response from developer
Following up on our earlier reply — version 1.8 is now live on the App Store. It lets you set a custom advance notification time for each event, so you can get a full-screen alert before an event begins, not just at the start time. This directly addresses the pre-event alert issue you raised. If the sound still doesn't play after updating, it's usually a system setting — please check that the Ring/Silent switch isn't set to Silent, Focus/Do Not Disturb is off, and Settings > Notifications > CalSyncAlert > Sounds is enabled. If it still happens, please reach out via the support link in the app and we'll investigate. We'd really appreciate it if you'd give 1.8 a try. Thanks again for helping us improve CalSyncAlert.
