Why I built it
Most flash card apps make it hard to add new words, or just aren't easy to use. I wanted to take the words straight from my weekly lessons and drop them into my own deck in minutes, then let the app decide what I need to review and when.
Now I add each week's new words in under 10 minutes. My deck has grown past 500 words, and I've saved hours I used to spend searching for them.
How it works
After each card, I rate it Again, Hard, Good, or Easy. Words I know well come back less often, and words I miss come back sooner. That's spaced repetition, the same idea behind apps like Anki.
It's a single web page, so there's nothing to install and no account. Progress stays in each person's own browser, and a backup file moves it between devices.