The new version of the app, that uses QR codes to pay for merchandise, can be be downloaded from the company's website, the website Quartz reported.
The so-called "Tour Pass" program allows visitors to use a pre-paid card service from the Bank of Shanghai, topping it up with Chinese yuan via their regular credit cards.
Payments in China are dominated by Alipay and WeChat Pay mobile wallets; a local phone number and Chinese bank account is needed to use them.
The Alipay mobile pay app for international users requires a minimum top-up of 100 yuan (US$14) and a maximum of 2000 yuan (US$285). After 90 days, any remaining money is refunded.
The move by Ant Financial may cause WeChat to move in the same direction and put a spoke in the wheel of international operators like MasterCard and Visa which have been pushing for acceptance of payments through their offerings.