Idle is here to make your free time more productive. It's an iOS app which selects tasks from your to-do list based on how much free time you have and the task priority.
Built to boosts productivity as we often find ourselves with limited free time but waste half of it deciding on what to do, Idle tells you what you can get done straight away.
More on the last point: if, say, I have 55 minutes, but the tasks takes 60, it won't show up, which can be frustrating if you have a lot of tasks. It can be remedied by extending time, but that's an additional step.
Overall, though, the concept clearly works, you just need to fix some issues and perhaps add more features later on.
Pros:- Interesting concept, I too wanted to actualize it once. Clean interface, all features are relevant. Prioritizes tasks for you.
Cons:Too slow sometimes because of long animations. (Major concern!) Too rigid in terms of time.