I cant believe how many to-do manager widgets and do-dads Ive tried. This one is EXACTLY what I have been looking for. Simple lists, with VERY few clicks/motions to add/remove/reorder different lists, and clever ways to color things, set-reminders, and - what I like most - instant always-available access on the Mac from the menu-bar area at the top of the screen.
Syncs between my iPhone and Mac (using Dropbox) like a gem. Heres the KEY to pulling that off with ease, however (Ive read that others either couldnt make it work, or had to do several things to finally make it work). I would suggest the following: first, install the iPhone version (be sure to also already have Dropbox on your phone - account activated, etc.). Go to General Settings, and select "synch with Dropbox". This will create a folder (automatically) in your Dropbox called "ToDoLists", and stick a file in there. Next, set-up this app on your Mac, and go to Preferences/General Settings. From there, choose this "folder" to sync with. If you dont do it in this order, it might confuse you and create two different files that dont sync with each other. Again, get Dropbox set up first on both devices (iPhone and Mac).