KaiOS brings the best of smartphones to affordable devices. The Hong Kong–based KaiOS Technologies (pronounced ky-O-S) has exceeded 150 million global users with devices that sell for as little as $15 dollars. It runs apps like YouTube, WhatsApp, Google Maps and Facebook but in a much more spartan manner than other smartphones. KaiOS is the number 2 mobile platform in India and countries like Indonesia, Rwanda, and Nigeria have shown interest in their affordable smartphones.