Startup Idea : Game-ified English Learning App

The problem is that the cost of ESL service is about 2500-4000 USD per month in countries such as UAE and KSA. Furthermore, ESL content is outdated and boring. Lastly, ESL speakers are required to learn the most advanced grammar rules that most English speakers don't recognize. Solution is to create game-ified English learning apps with a subscription model where users get access to real live teachers for 30-60 minutes per day. The modules in the app would only include relevant English phrases and sentences which users would need in a certain environment.