What about turning that money into more money? For starters, investing can be daunting, given the jargon and numbers used, and while you can invest through an investment management group, managers do charge fees. That can be a double-edged sword. If you want to play the stock market from your phone, without having to think about fees, Robinhood gives you the tools to do so. Android iOS. Why not get money back for your everyday purchases? The Kaking app helps you save money while shopping. All you do is check the app before you head out to shop, travel, or dine out, and add those cash-back deals to your phone.