Top 10 Free Android Apps.
1. Gmail
Owner: Google
Category: Communication
Initial Release: April 01, 2004
Users: 1 Billion+
Size: Varies with device
2. Google Maps
Owner: Google
Category: Travel & Local
Initial Release: September 23, 2008
Users: 1 Billion+
Size: Varies with device
3. Youtube
Owner: Google
Category: Media & Video
Initial Release: February 14, 2005
Users: 1 Billion+
Size: Varies with device
4. Facebook
Owner: Facebook
Category: Social
Initial Release: February 04, 2004
Users: 1 Billion+
Size: Varies with device
5. Google Search
Owner: Google
Category: Tools
Initial Release: September 15, 1997
Users: 1 Billion+
Size: Varies with device
6. Google+
Owner: Google
Category: Social
Initial Release: June 28, 2011
Users: 1 Billion+
Size: Varies with device
7. WhatsApp Messenger
Owner: Facebook
Category: Communication
Initial Release: February 24, 2009
Users: 1 Billion+
Size: Varies with device
8. Google Text-to-Speech
Owner: Google
Category: Tools
Initial Release: November 2013
Users: 1 Billion+
Size: Varies with device
9. Google Books
Owner: Google
Category: Books & Reference
Initial Release: December 2004
Users: 1 Billion+
Size: Varies with device
10. Messenger
Owner: Facebook
Category: Communication
Initial Release: August 09, 2011
Users: 1 Billion+
Size: Varies with device
