EXCLUSIVE—British fintech Curve opened its app for users in the United Kingdom today, allowing consumers full access to its host of mobile banking tools, including its ‘Go Back in Time’ feature for purchases.

The startup’s ‘Go Back in Time’ feature — which allows users to switch the payment for a previously made purchase from one bank card to another, within two weeks of the purchase — has become popular since it was first announced, Sachar Bialick, CEO and founder for Curve, told Bank Innovation, noting that the feature “has already been used over 40,000 times,” before the startup  had even opened to consumers or launched out of beta.

The startup will continue to expand its offerings to users over the coming year including “exciting plans for improvements to the Curve Rewards scheme,” Bialick said.

Bialick said in an emailed statement:

We have plans to develop that [Go Back in Time] feature even further for Curve cardholders in future — as well as a number of other new features to give them that all-important feeling of control over their own money.

The app, which was previously available in beta for consumers in the UK, allows a user to aggregate all of her banking cards and services to the startup’s own card—the Curve Mastercard, powered by that provider—before setting a default card for purchases.

The accompanying mobile app allows users to better budget their spending, complete with insights. Prior to today’s launch, there were over 50,000 people signed up on the app’s waitlist, according to Curve.

Following its official launch in the UK, the startup will expand its app and services to Europe, the company said.

Bialick said:

We are on the cusp of a pivotal moment for financial services – where the trend of fragmentation and the ‘unbundling of the banks’ is addressed, with consumers’ accounts, cards and services re-bundled into one platform that keeps things simpler, smarter and more secure.

To learn more about the latest developments in mobile banking and UK fintech join us on March 5-6, 2018 at the Parc 55 in San Francisco for Bank Innovation 2018. Click here to request an invitation.