Neumob is an App that greatly speeds up your Mobile Apps, I've noticed considerable differences when using Facebook, Twitter or even Product Hunt. Especially while traveling in certain countries (Eastern Europe for me for instance) I notice a big difference when I enable it. The App is free for up to 3GB as a user, I really don't use that much, no further restrictions. What I like as an added benefit, is that I can switch to different VPN end-points, enabling me to still watch the TV stations (through the Horizon app) I normally watch as it will connect me to an end-point in The Netherlands. No more being restricted to using what you are already paying for, just because you're abroad.