It's fairly easy to use even if you don't speak german. In any case an English version is coming.
http://meine.flugstatistik.de/kiwiflyer
Attention - News for English speaking users
20.02.2007
Dear User, many of you have asked us time and time again, if or when we might launch an English speaking FlugStatistik.de.
Well - with the help and support of a partner we can now tell you - SOON!
We hope to launch an english application in May or June - we are already working on it.
Of course, we also are making sure, you do not have to reenter all your data - you can simply switch from "German" to "English" and this way become a member of FlightMemory.com.
Please spread the word - any person not already using FlugStatistik.de can pre-register on the launch-alert at FlightMemory.com.
As always - we hear your ideas and remarks and try to acknowledge them - now please help us, making FlightMemory.com a success as FlugStatistik.de today is.