The app will aggregate information such as investor feedback and profiles, client orders and deal pricing, as well as keep track of important details like flight delays and contact information.
HSBC's global head of corporate and institutional digital Niall Cameron said the app "radically simplifies some of the most time-consuming and stressful parts" of raising capital through capital markets.
"It gives you real-time access to all aspects of your deal – all available in one place."
Available on both tablet and desktop, the app uses APIs to centralise data from multiple channels and bring it all together through easy-to-read graphs and visuals. Clients will be able to see both live deals and older ones, reducing mountains of paperwork.
Since MyDeal was first launched internally for trialling in November last year, HSBC bankers have tested the app with more than 30 deals valued at over $25bn (£19bn), across investment grade and high-yield bonds, and equity deals.
Adrian Lewis, head of equity capital markets for the EMEA region at HSBC, said the tool is "bringing the capital markets into the 21st century".