There isn[SQ]t a widely known or established app called "Friendly Social Browser" for Android. It[SQ]s possible :

*

The name is slightly different:

The app might have a similar name with a minor variation.
*

It[SQ]s a very niche or new app:

Less popular apps don[SQ]t get widespread recognition.
*

It[SQ]s a private or internal app:

The app might be developed for a specific group or company.
*

It[SQ]s a misspelling:

You might have misspelled the name.

If you can provide more details, such as where you heard about this app or any other identifying information, it might be possible to find it.