Starling Bank, a UK-based mobile challenger bank, has joined forces with mobile app Moneybox to provide its customers access to the latter’s saving and investing tools.

The service, expected to be available at the end of this month, will allow Starling customers to link their account to Moneybox, round up their purchases to the nearest pound and invest the spare change.

The partnership will leverage Starling’s open APIs, allowing secure exchange of customer data between the two apps and real time transactions.

Starling Bank chief platform officer Megan Caywood said: “People today want to not only manage their everyday money on their phone but their savings and investments too. Working with Moneybox makes this a possibility.

“This is why we’ve built our Marketplace and why Starling’s APIs enable third party developers, like Moneybox, to build a much wider range of apps and integrations that can help people manage their money more easily and effectively. We’re really excited about this partnership and believe it will be transformational for Starling’s customers.”

Moneybox co-founder Charlie Mortimer added: “Our goal is to make it easier than ever for our customers to save and invest. As the first challenger bank to offer an open API, we’re very excited to work with Starling to offer real-time round ups for the first time.”

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The partnership with Moneybox comes soon after Starling unveiled its developer portal to allow third parties to access customer data and build on top of its platform using application programming interfaces (APIs).