Not entirely true about no mobile app, there is always https://github.com/MobileOrg/mobileorg https://github.com/MobileOrg/mobileorg but it hasn't been updated

Not entirely true about no mobile app, there is always https://github.com/MobileOrg/mobileorg https://github.com/MobileOrg/mobileorg but it hasn't been updated since Febuary and there doesn't seem to be anyone actively involved with the project anymore.