If you are the one who holds a MTR card, or you are the one who wants to check the balance of your MTR card, then this is the perfect tool for you.

It is a free, simple, and easy-to-use application.

All you need to do is to swipe your card to select the option of Hong Kong Octopus or Shen Zhen Tong.

Once you have chosen your card, you will be presented with a list of information that you can read.

After that, you can tap the button "Show Balance" to check your balance.

This application is free, so there are no charges.

It is very easy to use, so there are no complicated steps to follow.