Keeps resetting without warning

I havent found a way to keep it from draining the battery (iPhone 5, iOS7). And I think its silly to require location to be on when youre only using the calendar or schedule features. I dont feel like I got much for my $, but I needed an app like this & it gets the job done.

Update: keeps wiping out my settings without any way for me to know it happened, until my phone rings in a meeting! Worse than useless. Drains the battery, and location services are on even when Ive completely closed the app. Deleting it, want my money back.

SavvyMay about AutoSilent