Yella has a long history of mobile app innovation. We invented server side call recordings. And pioneered the use of LLMs in spam detection. A small project - the WhatsApp integration for ChatGPT, is our most popular app to date. It has since been discontinued primarily due to Stripe failures. Stripe, the payment API we used, turned out to be very bad for accepting payments across Africa, Asia and S.America (basically, thats 3.5 billion people)