Date of Birth: 
About Kristel Kruustük
- Kristel Kruustük née Viidik (born 17 June 1989) is an Estonian entrepreneur and product tester.
- In 2012, together with her future husband Marko Kruustük, she won $25,000 at the AngelHack global competition.
- As a result, in March 2013 the couple were able to found Testlio, now a thriving mobile app testing company.
Read more at Wikipedia