Actually, Toodledo is a free online service (free for the 'light' version) and syncs with many apps - mobile of all sorts, desktop (Win/Linux/Max), has API, ...

Actually, Toodledo is a free online service (free for the 'light' version) and syncs with many apps - mobile of all sorts, desktop (Win/Linux/Max), has API, ... It's very cool and not to be dissing your product, but if you'd just add Toodledo sync you'd have all bases covered (you can't compete if you will try to develop apps for all these platforms yourself).