Bonum 24 — Mobile App for Crypto-to-Fiat Exchange
Bonum 24 needed to extend its exchange service into a mobile product built for frequent, focused interactions. Customers had to check a rate, create an exchange request, provide crypto wallet or bank details, complete verification, and follow transaction progress without depending on a desktop interface.
We shaped the app around the complete mobile customer journey: quick authentication, currency pair selection, amount calculation, KYC, payment instructions, request confirmation, live statuses, push notifications, transaction history, profile settings, and secure access.
The main challenge was to fit a detail-sensitive financial process into a compact interface without reducing clarity. At each step, users needed to understand the selected currencies, entered and expected amounts, applicable rate, payment method, required details, current status, and next action.
We designed a focused step-by-step journey: select an exchange direction, enter an amount, review the calculation, authenticate or register, complete KYC when required, add wallet or bank information, confirm the request, follow payment instructions, and monitor completion.
Special attention was given to thumb-friendly controls, numeric input, mobile financial formatting, document capture, validation, keyboard behavior, interrupted-flow recovery, biometric authentication, status timelines, push notifications, error prevention, protected sensitive data, and consistent states across device sizes.
What is the Bonum 24 mobile app designed for?
Does the app support both exchange directions?
How does mobile KYC work in the customer journey?
How are customers informed about transaction progress?
- /01Mobile Product and Exchange Flow DiscoveryWe mapped currencies, exchange directions, rate logic, customer states, KYC requirements, payment details, transaction statuses, notifications, and mobile security risks.
- /02Mobile Journey and Navigation ArchitectureWe structured authentication, calculator, verification, request creation, payment instructions, transaction tracking, history, notifications, profile, and security settings.
- /03Mobile UI System and Interactive PrototypingWe designed touch-friendly exchange screens, numeric inputs, document capture, confirmation states, timelines, notifications, biometric access, and edge-case behavior.
- /04Mobile Development, Integration, and TestingWe implemented reusable mobile components, integrated exchange, account, verification, and notification APIs, added secure authentication, and tested critical flows on target devices.



