Homeowners know that it”s important to clean their gutters at least twice per year. The “Homeowner Calendar” app for iPhone will act as a calendar that reminds you when it’s time for gutter cleaning again. It does the same for other periodic maintenance chores, including filter and battery checks, lawn and gardening fertilization schedules, and even tax preparation. You can also put in your own custom tasks as well. Available at the iTunes App Store.