I always keep coming back to Memrise. Memrise has a few advantages over open source spaced repetition learning, not the least of which was little reward noises and a garden that grew.
As I’m testing, on every answer the course says, I don’t know what, either what I clicked on or the right answer, and gives me an error on-screen, a little red circle with a line through it. I cannot, try as I might, get a screen shot of it.
There is nothing indicating I’m getting answers right, and when I guess, I have no idea if it was wrong or right, just always a red error circle with a diagonal line through it.