Thank you! That's very generous of you to give a 5 star review despite your concerns about the download size.
The download size is only about 14Mb but once that gets decompressed and stored in IndexedDB it swells to over 300Mb on disk. It seems like the IndexedDB indices are particularly large and at some point I hope to find a way to reduce them somewhat.
The up-side is that by storing the data in IndexedDB Rikaichamp uses much less memory when it is running and can be kept up-to-date by just downloading the changed records each week which is normally only a few kilobytes.
