iPhone App
aquaPlanner - 4/5 stars | I was given this app to test, and I really like it's concept. It's simple. Set the desired intervals for various aquarium maintenance chores, and the phone sends you reminders to actually do them. When you complete a particular task (e.g. change the activated carbon), you click the respective reset button, and the clock starts ticking again. The app works well, and is a good reminder tool for the novice / intermediate hobbyist. :thumbsup:
For advanced aquarists, I would like to see some user-editable content in the app. For example, one could maybe change "Chemi-Pure" to "Biopellets" and be able to numerically assign the time intervals, instead of using sliders. Also, adding and removing reminders to suit one's individual tank would be the key, like adding a "clean the sump" reminder.