Pricing is too high & Mobile App needed
There is no way anyone will purchase a pro account based on current pricing. Needs to be addressed otherwise you will not have anyone adopt the Pro subscription. Especially given the fact that there are no mobile apps. Accessing it on an iPad only works using Chrome and even at best doesn't run well.
Things to do:
1. Reduce pricing dramatically;
2. Develop Mobile Apps;
3. Ensure Offline access is available otherwise don't bother with step 2
It has great potential but Wunderlist, Todoist are way cheaper albeit doesn't have the integration between Goals and Tasks.