Because language learning generally sux, is horribly boring and I don't get enough of sleep enough anyway.

So, if there is an app that makes me want to open it, enjoy the process, then it is pure gain. Sometimes I get double motivated and do extras (content consumption, reading grammar), other times I just keep the streak.

But if I had to wake up every day an hour sooner to study language, then I would be forgetting everything in two weeks, because that would genuinely lowered my quality of life.

And yes, I am ok with idea that you will learn faster then I will.