I have been using this for years now. I guess you could call it thoroughly enough tested that I can present my opinion. This is pretty much the best. I have about eight other to do apps I have tried, and two to do websites. The simple ability to say I do these things every day, and I want to check them off, as I do them, every day - why is this so revolutionary? If you want a to do you have to enter it for every day you’re going to do it on most of these to do apps. It is like they’re trying to reinvent the wheel and the fact that it needs to be round most of the time is really hard for them to grasp. Yes, I need to be reminded to take my pills every day. And a reminder that I meant to strip the beds and wash the sheets every week (dust allergies) would be helpful too, and if I only have to enter it once, instead of one time for every week that I intend to strip the sheets off the bed, that would be marvelous. You understand me, and the nature of my life. If there was one thing I could imagine adding, it would be a toggle for winter versus summer, so that I could have one list of to dos for when the snow is on the ground, like shoveling and scattering sand and salt, and another for when the lawn and garden need attention, like mow once a week, get out in the garden and weed for 15 minutes every day, check the week to see what needs planting this week, you know the drill. But I get by switching out weeding for shoveling manually.