Niki Flash Sale (27 – 28 Sep) : FREE Services, Cashback, Assured Gifts & Rs.50,000 Up For Grabs! Posted on September 27, 2018 by OFFER OF WORLD Niki App Flash Sale. Continue reading → Share this:Click to share on WhatsApp (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)