Mobile Banking Super App
The Challenge
The bank’s legacy mobile app suffered from slow releases and poor reliability, leading to customer churn and falling NPS. Customers demanded real-time card controls, instant payments, and personalised insights.
Our Solution
We rebuilt the experience as a native super app with modular architecture, biometric security, personal finance insights, and instant payment rails. A GraphQL gateway unified services while CI/CD pipelines enabled weekly releases.
Key Features Delivered
- Instant SEPA and FPS payments with real-time notifications
- Card controls for spend limits, freeze, and virtual cards
- Personalised budgeting and subscription tracking
- Secure document vault and e-signatures
- In-app support with chatbot triage and live handover
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Technology Stack
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Business Impact
Active usage grew 64% in the first six months and NPS climbed 22 points. Customer support tickets about mobile banking dropped by 37% thanks to in-app self-service.
Project Timeline
Product & UX Discovery
4 weeks
Conducted workshops with compliance, risk, and customer success to define journeys and KPIs.
Architecture & API Layer
6 weeks
Introduced GraphQL gateway, microservices for payments, and secure tokenisation services.
App Development
10 weeks
Built Kotlin and Swift codebases with shared design system, analytics instrumentation, and offline-first caching.
Pilot & Launch
6 weeks
Ran closed beta with 20k users, executed penetration testing, and launched with staged rollouts.
"ByteBoon gave us the mobile experience our customers were begging for and the release cadence our product teams needed."
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