The application is owned by a European company and helps the user to establish the identity of an unknown caller using its global database of mobile and telephone numbers.
There have been cases where suspected Pakistani spies have used the application to establish the identity of Army officers and made phone calls to them or their families trying to gather information from them, Army sources said.
The circular was issued to warn the officers and personnel of the ways the application can be misused and the precautions to be taken while having it on their smart phones, they said.
In the recent past, the Army had also asked its personnel not to use social media applications such as WeChat which may have servers abroad.
The army is worried that activity on the social media could lead to identification of the army officers and others and their location.