eb2

Yes, Alex Gerko is the UKs biggest tax payer and regularly donates to schools/universities math departments

Saying his project is very similar to tell.it is like saying hackernews is very similar to Facebook because they both have text boxes and a reply button.

Have you considered that if your trackable focus time is mostly offline, you’re not the intended user?

Really surprised nobody has said babbel, great app with a good mix of grammar, explanation, useful vocabulary and spaced repetition based review.

You don’t need parent because you can use a breadcrumb stack to track parents.

You want sibling nodes otherwise you will have to traverse back to the root node sometimes to find a sibling.