Glock Free

No this not a gun, but a tool, might be useful to you. Everyone has an Alarm Clock on the phone, which alerts at certain time, that is, WHEN to alert? Okay, now this Glock app comes to do WHERE to alert. Smart as you, must have known what I meant.

Recent changes:
Fixed 2 issues:
1. input a non-number value as the range;
2. message of a Glock contains quotes;