iOS - Version 5.2.8 iKnow! Support Updated June 26, 2020 02:11 Follow Some small improvements to the user experience. June 25, 2020 Related articles iOS - Version 5.2.7 Biometric login on mobile app Price change for iKnow! Pro membership (October 1, 2019) How can I type pinyin with tone markers? What's iKnow! Pro Member? Comments 0 comments Article is closed for comments.