The card was launched in 2011
Launched in February earlier this year, the Leap card app is proving popular with customers as sales through the app in August topped €1 million.
So far, over 75,000 people have downloaded the app, which saves credit card details for a quick top-up, while further functions are set to be added to it down the line.
Speaking to Newstalk.com, a spokesperson said: "Currently the App is available on Android v4.4 or above and requires the device to have NFC functionality. Essentially once you download the App to a compatible phone, you simply hold a Leap card to the NFC device and you can view the last five transactions, check your balance, top up your purse on the go [and] collect online purchases."
Since they came into circulation in 2011, roughly €1.8 million cards have been sold. The €5 paid to purchase a card is refundable, but also acts as a buffer if you are low on credit.
The €5 goes onto the buyer's card, and if the credit on the card is low, say €0.01, the cardholder can still take journeys up to a total value of €5.
There is also an option to donate your refund to charity, with the money going to Focus Ireland while the company is in the process of of designating a further three charities.