Mobile App Development · Case Study · Animink
Animink built and launched a secure, cross-platform app for FOCUS Broadband that reached 5,070 downloads on iOS and Android within its first couple of months.
Executive Summary
5,000+ Downloads After a Smooth, Secure Launch
Animink developed and deployed a cross-platform mobile app for FOCUS Broadband, helping the provider deliver a secure and convenient customer experience on iOS and Android. Within the first couple of months, the app reached 5,070 total downloads: 3,730 on iPhone and 1,340 on Android. The launch was smooth, with no major customer complaints or significant post-launch issues reported.
About the Client
About FOCUS Broadband
FOCUS Broadband is a broadband provider focused on delivering connected services and dependable support to its community. The organization wanted a mobile app that gave customers a simple way to access their account experience while protecting sensitive login and session data.
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The Goal
Launch a Secure, Easy-to-Use Broadband Customer App
FOCUS Broadband needed an app that would feel straightforward for everyday customers while meeting the security expectations of an account-based service. The solution had to work consistently across iPhone and Android devices, support biometric authentication, and be ready for a dependable deployment to both app stores.
For a customer-facing mobile app, ease of use and security are inseparable. Customers expect to sign in quickly, but the app must also protect access tokens that could expose account sessions if handled incorrectly.
Animink’s mobile app development team designed the experience around both needs from the beginning.
The Challenge
Balancing Biometric Convenience with Token Security
Biometric authentication can speed up login, but it must be implemented carefully. A basic approach that checks whether a user has passed a biometric prompt and then retrieves a token from insecure device storage can introduce unnecessary risk. On rooted or jailbroken devices, or through a reverse-engineered app package, standard local storage can be easier to access.
FOCUS Broadband needed stronger protection for refresh tokens without creating a cumbersome login process. The technical objective was clear: require a valid biometric check to unlock sensitive session information while keeping the customer journey quick and familiar.
The Solution
Secure Cross-Platform Mobile App Development
Animink built the FOCUS Broadband app with Flutter 3.41.0 and Dart, integrating it with the required backend APIs. Flutter let the team deliver a consistent experience across iOS and Android from a shared codebase, enabling efficient cross-platform deployment. You can learn more about our mobile app development services.
For secure authentication, Animink used encrypted storage backed by the Android Keystore and iOS Keychain. The refresh token was protected with a device-generated encryption key tied to the device’s hardware security features. The key cannot unlock the token without successful biometric verification.
This approach avoids relying on standard local storage, such as SharedPreferences, for sensitive token data. Instead, it creates a more secure authentication flow that helps safeguard customer sessions while allowing returning users to access the app through a simple biometric sign-in experience.
Technology used: Flutter 3.41.0, Dart, backend API integrations, Android Keystore, iOS Keychain, encrypted secure storage, and biometric authentication.
Deployment
Smooth Deployment Across iOS and Android
A successful launch requires more than working code. It requires reliable preparation for real devices, store deployment, account access, and the post-launch customer experience. Animink prepared the FOCUS Broadband app for distribution on the Apple App Store and Google Play, ensuring customers could access a consistent experience on the devices they use every day.
The outcome was a stable public rollout. FOCUS Broadband reported a smooth user experience and received no major issues or complaints from live customers in the first months after launch. That stability created the foundation for fast adoption.
Results
5,070 Downloads in the First Couple of Months
FOCUS Broadband’s mobile app saw rapid early adoption following launch. The combined store data shows 5,070 downloads within the first couple of months.
5k+ total app downloads
3.7k+ iPhone app downloads
1.3k+ Android app downloads
No major post-launch issues or customer complaints reported
The strong iPhone and Android adoption indicates that the cross-platform strategy gave FOCUS Broadband a practical way to reach customers on their preferred devices. Just as importantly, the app’s secure architecture and intuitive authentication flow supported this early momentum without compromising user trust.
Why It Worked
Why the FOCUS Broadband App Launch Worked
The project combined the essential elements of a successful customer-app deployment: a clear customer need, a consistent cross-platform experience, a secure authentication design, and careful launch preparation. By using biometric-bound encryption rather than basic device storage for sensitive refresh tokens, Animink reduced a meaningful security risk while preserving user convenience.
The results demonstrate how a thoughtfully built mobile app can become a useful, trusted touchpoint for broadband customers. For organizations planning a similar solution, the FOCUS Broadband project shows that security and user adoption don’t have to compete.
When security is designed into the experience, customers can get the convenience they expect, and the organization can launch with confidence.
Related Services
Related Animink Services
This project reflects Animink’s expertise in mobile app development for iOS and Android, custom software development, and secure, API-driven application experiences. Businesses exploring a customer app, employee portal, or custom digital product can learn more about our mobile app development services, custom software development services, or contact Animink to discuss a project.
FAQ
Frequently Asked Questions
The FOCUS Broadband app reached 5,070 downloads in the first couple of months after launch. This included 3,730 iPhone downloads and 1,340 Android downloads.
Animink built a consistent cross-platform experience with Flutter, integrated the app with backend APIs, prepared it for distribution through the Apple App Store and Google Play, and used a secure biometric authentication architecture. FOCUS Broadband reported no major issues or customer complaints from live users during the early launch period.
The app uses encrypted secure storage supported by the Android Keystore and iOS Keychain. Refresh tokens are encrypted with a device-generated key that requires successful biometric verification to unlock the token.
The app was built with Flutter 3.41.0 and Dart, with backend API integrations. Its security architecture uses Android Keystore, iOS Keychain, encrypted secure storage, and biometric authentication.
Ready to Build a Secure Customer App?
If your organization needs a customer-facing iOS and Android app that balances security, usability, and reliable deployment, Animink can help.
