In the meanwhile, I’ve provided a patch for the Nextcloud Tasks app which ensures, that DUE<DTSTART: https://github.com/nextcloud/tasks/commit/24b381d46a8e7fb1cf993f5ea8be618760b0f402
It is part of the latest release v0.9.4 which is published in both app-stores from ownCloud and from Nextcloud.
Can I set my sync interval for once a day and have the ability to sync my calendar on demand by swiping down ?
Can I set my sync interval for once a day and have the ability to sync on demand by swiping down ?
Yes, you can Swiping down will queue a sync immediately.
By the way, you can find this information and more on https://icsdroid.bitfire.at/usage/