iAntiTheft

If you’re looking for a simple alarm that does a job this is it. They have several settings from motion settings to an unplugged setting and even a cool one where if the phone is pulled out of your pocket, your alarm will go off.

Update: Unreliable! I guess iOS suspends the app after a certain number of hours or under certain conditions. If I leave it running overnight in motion mode, it often doesn't activate in the morning if I pick it up. Changing from four stars to two. Original review: Without the 3 second delay and fingerprint disable features, its crap. I have yet to check to see how much the upgrade costs. With these features, it's in daily use. Competing apps don't have the latter feature at all, IIRC. It IS discreet- if you simply turn down the "lock/unlock volume" setting.

I really love this app. I use it when I am not paying attention to my phone. I have the full version and I love it. However, I found a slight issue that might be unfixable. I went into motion detection, and when I moved my phone, as usual the alarm went off, but I cancelled the Touch ID, Double pressed the home button and I was able to close the app and the alarm fully. But overall it’s a great app to get. Thanks!