There are may be many emergency apps on the store like VithU,Citizen Cop,bsafe,Woman Guard etc but they won't have the given below features which makes Usaver! most helpful in any emergency...
What differs it from other application is
1)***Works without INTERNET
2)more number of contacts to be added in receptions
3)faster and accurate execution
4) user friendly user-interface
5)Call to a emergency number
*****Cheers For Users****
If 3 contacts are added then it will send the sms 3 times to those numbers and then it close to avoid unnecessary deduction of prepaid users for concern of balance
If 6 contacts are added then it will continuously send message in every minute with new location for users those who don't have any problem of balance or any other kind of problem.