App that syncs with "Google Tasks" and Collapses Sub-Tasks

[Jon44]

My one remaining disappointment after switching from iPhone to Samsung S5 is that I can't find an Android app that offers collapsible lists and that syncs with Google Tasks. (I think the iOS app that did this was GTasks.)

Can someone recommend something? Or, I'm open to ditching Google Tasks if there's a replacement that offers similar ease of use and outlining capabilities (and doesn't have a monthly subscription)...

Thanks, Jon