Follow us online: 
Reviews
"...if you're looking for [a to-do app] with more functionality, Appigo's Todo is one of the better options, and it doesn't require a Ph.D. in Getting things Done (GTD) to figure out how to use it...well worth its $10 price tag."
Dan Frakes, Macworld.com
Read the full review
"If it's a to-do list you need, you can't do better than Todo by Appigo."
Lisa Hoover, CIO.com
Can I re-download Todo without being charged again?
Yes. Follow the instructions here.