The most blowing question ever! How much does it cost to develop a chat app like WhatsApp including the front-end and back-end works? Read and calculate expenses: https://artjoker.net/blog/how-much-does-it-cost-to-develop-a-chat-app-like-whatsapp/

What is the cost of the mobile app truly based on? This mobile app development cost breakdown in 6 factors prove that the high-quality app development will not be cheap, but keep in mind, the result is worth paying for. https://artjoker.net/blog/how-much-does-it-cost-to-develop-a-mobile-app/