Disrupting German banking: inside C24 Bank's rapid rise

As part of CHECK24, Germany's largest product comparison portal, C24 Bank leveraged Mambu’s flexible platform to scale quickly, deliver exceptional customer experiences, and help customers prioritise smarter financial decisions.

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months to market
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account growth YoY since launch
4,0/5
highest rated bank in Germany

C24 Bank

About the customer

C24 Bank, established in 2019 and part of CHECK24 – Germany’s largest product comparison portal, is a fully regulated and BaFin-approved digital bank focused on customer-centric, transparent banking. With Germany's best checking account, C24 Bank delivers an exceptional user experience, empowering customers to make smarter financial decisions.

The bank provides current accounts, debit cards, loans, and deposit options—all accessible through its fully digital mobile app.

  • Launched in 2020
  • Germany's best Girokonto
  • Goal: serve 1 million customers

The challenge

Navigating competition with customer-first banking

In a competitive, heavily regulated market, C24 Bank sought to differentiate itself by focusing on customer needs, offering low-fee, transparent banking with exceptional customer service. To enter the market successfully, C24 needed to build credibility and trust, meet regulatory requirements and ensure reliability and scalability without compromising speed.

With an ambitious goal of launching within 12 months, C24 Bank required a flexible, composable platform to deliver rapid development and an excellent customer experience.