Search function/indexing improved but can't delete search history. Downloaded the complete Wikipedia ZIM file (wikipedia_en_all_nopic.zim). The most recent update greatly improved search/indexing function. However  from 5 stars  I have to remove one star due to inability to delete search history. You have to go to 'settings - installed apps - kiwix - clear data' just to remove your or someone else's browsing/search history you don't want retained in your phone.
September 03 2016