My Opal is an iPhone app developed by Alistair Phillips that allows you to track your Opal card balance and journey history across Sydney's trains, ferries, buses, and light rail. This full version app lets you see how much you paid for each leg of your journey and displays balances for multiple Opal cards registered under your login. Additionally, the fare calculator helps you work out how much your next trip will cost.

The app features an Opal Retailer Map that lists all top-up locations, along with a Today extension and Apple Watch app that provides you with information at a glance. Please note that this app is not affiliated with Transport for NSW, and your Opal card login details are required to use this app, which are safely transmitted using a secure https connection. By using this application, you authorise that login information is transmitted to a third party via means of a secure connection.