It would be nice if there was an app for my windows phone.
Followed by a Windows Desktop version.
Yes please! Windows Phone app, thanks :-)))
I agree with David. (You should listen to him--he's a well known author and technologist). :O)
Windows Phone is one of the main mobile platforms these days and if you have a serious app, you really need to have an offering on that platform. Also, from what I'm seeing, Win Phone 8 is becoming more and more the enterprise mobile platform of choice. So you'd be wise to support it to garner a number of enterprise users.
You have a great task/todo ecosystem, with cloud-backed service. And great user experiences on your client apps. (Have tried iPad/iPhone). Now to complete the experience, you just need to make the apps available on the platform that more and more of us are choosing out here.