Source: http://web.appstorm....ns-with-goalstacker/Site: https://goalstacker.comSimilar Service: http://web.appstorm....tell-you-what-to-do/Unique feature:
It's not quite a time tracker, not quite a notable list app but pretty cool recent modifications on the age old master list concept.
I'm posting it here more for the concept than the website though.
I think, while the actual site, is great in that it's an existing product the sliding feature can better be suited for things like narrowing down a set of items that has a certain amount of subtasks or narrowing down search key terms like a mix between Workflowy's/Evernote search with Google Instant type recommendations based on how far the slider goes.
Another idea I would like to have is a subtask that is controlled by the slider kind of like a curtain.
Nothing major though but I've been out of the loop and I really haven't chanced upon anything new with productivity softwares/concepts.