HomeBot is for modern day homeowners looking for a customized synopsis of their property. Free to sign up, this email notification system sends a personalized report that tracks your current property value, mortgages and market conditions. The digest also includes information about when to buy or sell your home, when to refinance based on current rates, when to drop your mortgage insurance, how much money you can save by increasing your principal payments, and even how much you could make if you rented your home on Airbnb.