Proxy software is needed for many reasons like opening blocked websites, hiding IP address etc. There are many proxy softwares on android market and I tried most of them. There were many problems with those software. Some are not free, some are too slow and some show connection error. Finally I came across a very useful proxy software and that is free as well as fast Hideninja Vpn.
Hideninja Vpn is available as a free as well as a paid app. Free version limits you to select certain locations but the good side is, it's free. But I suggest you to buy pro version as it provides many locations to hide your self as well as better speed.
If you want speed rather than location, select "Netherlands" as your country because it is alot faster than any other location.
Download: Hideninja Free(Google Play)
Download: Hideninja Pro(Google Play)