According to the latest figures, there are more than 750,000 SuperGold cardholders across the country.
Of those, 350,000 use a smartphone, according to numbers from 2017.
The app can be used to get discounts at participating stores, including Qantas, Countdown, Spark and The Warehouse.
Martin said she hoped this would only be the start and called on more businesses to get onboard.
"I'm sure there are plenty of other businesses, local and national, who will want to access this market and help older New Zealanders."
Upgrading the SuperGold card scheme was in the Labour/ New Zealand First coalition agreement.
The Government promised to: "introduce a new generation SuperGold smartcard containing entitlements and concessions".
Peters said this morning that the card's upgrade delivers on that promise.
"The SuperGold card had been neglected by the previous Government so plenty of work was needed to supercharge it.
"That has been achieved, and it's going to help make it easier for seniors to get a bit more out of their superannuation."