You can clear cookies and history in Google Chrome from the Settings menu on any computer or mobile device.

Private browsing entails surfing the web without storing information about your browsing sessions. During private browsing, your web history isn't saved, form data isn't recorded, and cookies are ...

Much as with Google Chrome, you can clear the cache from within the Mozilla Firefox Android app. To access this function, tap the More button on the right of the address bar, again symbolized by three ...