O-Card Reader is a free utility tool available for iPhone users. It allows you to check the balance on your card without the need for an internet connection. Developed by chan hong wing, this app is designed to provide a convenient way to access your card balance.

With O-Card Reader, you can easily check the balance on your card without any hassle. Whether it's an Octopus card issued before or after October 1st, 2017, this app supports all Octopus cards. Additionally, you can also view the balance history of your card.

One of the key advantages of O-Card Reader is that it doesn't have any advertisements, ensuring a smooth and uninterrupted user experience. Furthermore, it prioritizes your privacy by not uploading any data to any server.

If you're an iPhone user looking for a simple and reliable way to check your card balance, O-Card Reader is worth considering. Download it today and keep track of your card balance effortlessly.