What's https://www.supermemo.com/ then? I just signed up to give it a go (requires CC #, but free for a month). Still haven't found good spaced repetition vocab learning site that works well for me.

https://super-memo.com/ is the software that's being talked about.

Ah OK, though I'm still curious how there can also be an apparently unrelated online offering at supermemo.com. FWIW, from the very brief experience I've had so far I'm not super impressed, but I'll try sticking with it for at least the month of the free trial.

Ah, right I don't know the story. Anki has similar problems (a competing service with the same name because IIRC Anki didn't trademark its name).

they are working together. supermemo.com is based on the same algorithm but is designed to be more mainstream (no advanced stuff like incremental reading & hard to make your own cards).You can buy high quality language courses there(no need to make all the cards). I have both since supermemo.com has an app for the phone.

The top-level comment links to a wired article which actually references the paid language learning tool.

If actually using it has this huge friction, how do you manage to use it every day? I always have a hard time creating habits out things that are hard to "start" doing every time.

I don't. I developed my own spaced repetition software from first principles based on the latest research :D

Is your code open source? Seems like Anki could do with some competition.

I would love a link dump if you have that handy and don't mind. I'm working on something with a spaced repetition component.

I am also very interested, are you planning on open-sourcing / selling it?

Is it available somewhere? Could it become available?