That's very useful! There are a lot of apps already, and if you want to create something new, then you need to get professional help and use a good company with skilled workers. Online learning is becoming more and more popular nowadays, and the demand for learning apps and learning systems is very high. Some time ago, I came across this blog article, which provided me with some useful and interesting information about the creation of an online learning management system, and it looks like a very complex and hard process. However, such a system has a lot of benefits, and if there is a need for creation, it's worth getting the best and the most professional help with it.