Supermemo.Net crashes the Safari browser for about a week or so now. Both on the Mac and on the iPhone. I could be wrong, but it seems to happen right when the new "Hello (username)!" message would disappear/roll up.
Opera Mini on the iPhone originally didn't work. But with their new update, it now almost works. Super speedy, too.
Thank you for you report. The problem has already been fixed. The changes will be available this week (we are going to update supermeme.net on Thursday/Friday).
Working great. Thanks.