Cash app investing Cash App Investing Review: Tailor-Made for Beginner Stock Trading The Square Cash app has more than 32 million users in the past two years, and the payment platform has recently opened up to buy and sell stocks to customers. The Cash App investing is a new medium, launched in the fourth quarter of 2019, but has become a viable alternative to other cheaper investment methods. In this review, please check our app reviews, platform details, pros and cons, the best method for you, and the best way to get a premium brokerage platform. Making money investing is one of the services available on the Cash application platform, which is a product of a California-based financial technology company. You can use the cash app to send money to individuals or withdraw cash from ATMs. Since its launch in 2013, the "cash" app has added more services, and the competition for Venmo PayPal has intensified.