In reply to General Lee:
Can I suggest some further important apps for Petzl to invent.
The ruck sac indicator, an app which tells you if you have put your ruck sac on yet.
Bouldering app, checks status and equipment before bouldering starts, no shirt, check, beanie hat, check, tooth brush, check, nickname etc.
Rope breakage indicator, sounds an alarm if rope breaks and partner is in crumpled heap next to you.