A1 Guard is an Android application developed by A1 Bulgaria, which helps users protect their loved ones from unsafe incoming calls. This free app allows the user to manage incoming calls, create a safe contact list of people who can reach the protected user, and configure settings for not safe incoming calls.

One of the best features of A1 Guard is the ability to get notifications for incoming calls that are out of the safe contact list. This ensures that the user is aware of any potentially unsafe calls and can take appropriate action. Additionally, A1 Guard gives the user the ability to change the ringtone when there is an incoming call out of the safe list, making it easier to identify and avoid unwanted calls.

Overall, A1 Guard is a useful utility and tool for anyone who wants to ensure the safety of their loved ones. With its easy-to-use interface and powerful features, it is a must-have app for anyone who wants to protect themselves and their family from unwanted calls.