Refer & Earn initiatives are another feature of financial apps like Acorns and Robinhood that give users free stocks or cash bonuses in exchange for introducing new investors. Referring friends to download and play games can earn rummy noble 777you in-game rewards on apps like Fortnite and PlayerUnknown's Battlegrounds Mobile. Refer & Earn apps are also available in a number of other categories, including ride-sharing services like Uber and Lyft, food delivery services like Uber Eats and DoorDash, and streaming services like Netflix & Spotify. Incentives offered by these apps include extended free trials for premium subscriptions, discounts on subsequent purchases, and free rides or deliveries.