There are many lesser-known but awesome apps waiting to be discovered and downloaded on our mobile devices. However, the coolest apps are usually fun, entertaining, or uniquely helpful. After some searching, we found several apps that reflect some or all of those same qualities.

Here's our list of nine really cool apps you've never heard of.

With lessons broken down into easy to understand steps and consistent encouraging feedback, Programming Hub is a great app for those who want to learn a programming language at their own pace. There are over 20 programming languages to choose from, including HTML, Python, Java, and C programming.

Programming Hub is free to download for iOS and Android devices, but premium features such as no ads, offline mode, and unlimited access to all courses require a subscription.