Gear Mechanisms usage and tips

You can easily learn about the gear mechanism from this app! And you can also find out what gear is used for what purpose.
This application is designed for complete education.
If there is any problem or error in this app, let me know in the comments.
I hope this app will be very useful for mechanical students, and if you like my application, please let me know. Thank you.

These following are explained in this application

Basic Gear Mechanisms, What Are Gears? Parts of a Gear, How many types of gear,
Industries and Applications of Gears by Type, Application of Different Types of Gears,
Gear Lubrication, Characteristics of Gears by Type, and etc...