First Day of the Week | OmniFocus Preference

First Day of the Week

By default, prior to iOS 16, the first day of the week OmniFocus uses is determined by your iOS device's Region setting, but this hidden preference allows you to override that.

(OmniFocus will open to confirm the change)

This is not a synced preference, so you'll need to visit this page on each device where you want to apply this change.

Preference does not apply to v3.15 or newer. Instead, you can use the system-wide setting introduced in iOS 16, found under Settings.app > General > Language & Region.

If you previously used this hidden preference, you may need to clear it to allow OmniFocus to start using the system-wide setting.
Clear Old Preference