Kuty Shalev is the Founder of eight hours to develop, and when it first launched, it had one singular function: to send “Yo” to the user’s friends. The app survey of more than 7,000 consumers, what makes consumers “sticky” is simplicity. If you’ve got a great idea for a product, you should set your sights on creating a prototype in 90 days to test your idea, gather feedback and get to market quickly.