SmartGo Kifu is on sale for a week: $15 instead of $20. This only happens once every two years or so.
The upgrade bundle for SmartGo Pro (iPhone only) to Kifu (universal) is also on sale. Both the upgrade bundle and SmartGo Pro will subsequently be removed from the store. Having separate iPhone and universal versions has proven to be too confusing, unfortunately, so this is your last chance to take advantage of upgrade pricing to move from Pro to Kifu:
http://www.smartgo.com/blog/20141113.html