CallApp - Caller ID and Block is a free Android application that allows users to block any number from receiving calls on their mobile phone. It was developed by ZL Systems, a Canadian company who released the similar application for Blackberry platform earlier this year. Now it is available for free download on Google play store. The service can also be availed of for free on Yahoo or Facebook Android applications. However, users have to share their contact details in order to add their numbers to this application. However, once they are added, blocking the same number will not be possible anymore as it will appear with the picture of the caller and will also show the incoming call log.
This free application has the ability to recognize all local calls made within a particular area code. As such, it can manage multiple calls coming from numbers that are outside the specified area code and hence it becomes possible for the user to block these numbers from receiving calls on their phone. The most common areas where this free software is used include telemarketing, direct marketing, and advertising campaigns. However, this application is equally effective against those numbers that are used repeatedly by pranksters as it blocks them completely.
Another significant aspect of this software is that it does not require installation of any extra third-party application to the phone's memory. Users need only download the software to their respective phones and install it. Even if there is no internet connectivity in the particular phone, this software works fine on offline phones as well. In fact, if you have a rooted Android phone, then you can even use this application from the built-in dialer that comes along with almost every Android handset. So, if you are still using preinstalled dialers on your phone and are still getting annoyed with annoying callers, then do switch to this free software and forget all about unwanted callers.