Hi Jim ... I use Drag Queen. I like the "Late Set Position" for when you forget to set position when you first drop the hook (i.e. before you payout appropriate scope)
We have ended up using two, Anchor Time and Anchor Alarm. My wife uses one and I use the other so that we always have two different alarms operating on our respective phones. We also set our B&G anchor alarm, so in reality we are using three, but the B&G might be difficult to hear in our cabin.