Renny HOME &ndash; The Smart Home Phone & Loud Wireless Ringer for Cell Phone Renny is a free home phone alternative & smartphone ringer that works with your existing cellular service, so you can use your cell phone AS your home phone. You will Never Miss Another Call, even if your cell phone is on silent, vibrate, upstairs, or in the car in your garage. Renny automatically connects to one or two smartphones wirelessly when within 200 feet (without using a landline, internet or home phone system). Lost your phone around the house? No problem Renny can help you find it by turning on your phones alarm. Start saving money today with Renny.