"I haven’t seen any commercial products that put together all these different things" (emphasis mine). There appears to be more to Cerego than simple spaced re

"I haven’t seen any commercial products that put together all these different things" (emphasis mine). There appears to be more to Cerego than simple spaced repetition, but I can't tell exactly what right now because it is in limited beta. I used "Mental Case" on the iPhone a few years ago, and it had a simple implementation of spaced repetition, but it did not adjust itself to my progress very well. I would like to find something better; if you know of anything specific besides the Wikipedia article, please post it.