Mobile app development
Determinds delivers custom mobile app development for iOS and Android in React Native, covering phones, tablets, and television, with every app engineered for the devices and network conditions your users rely on.
01 Platforms
Apps for phone, tablet, and television
Determinds builds native and cross-platform applications for iOS, Android, tablet, and television, each backed by a custom backend designed for security, speed, and scale.
iOS
iPhone and iPad applications that use the camera, HealthKit, Apple Pay, and push notifications, built to Apple’s Human Interface Guidelines for a smooth App Store review.
Android
Applications tested across device profiles from budget phones to flagships and built to Material Design principles, so behavior stays consistent across screen sizes and Android versions.
Tablet
Point-of-sale systems, enterprise dashboards, and field-service tools with adaptive layouts designed to make full use of the larger screen.
Television
Apps for Apple TV, Android TV, and Fire TV with remote-friendly navigation and media playback tuned for the big screen.
02 Cross-platform and native
One codebase, with native code where needed
React Native and Expo carry most builds to iOS and Android from a single codebase, which shortens delivery and leaves one codebase to maintain, while keeping the native feel your users expect.
Swift and Kotlin come in when an app needs deep hardware access, complex animation, or maximum performance, and our team makes that decision for each project based on its requirements.
03 How we deliver
From strategy to launch and support
Discovery and strategy
Your business goals, audience, and competitive landscape shape the feature list, user stories, and technical requirements.
UX and UI design
Wireframes, user flows, and interactive prototypes let you use the app before any code is written.
Development in sprints
Two-week sprints with a demo at the end of each, so your feedback shapes the app while changes are quick to make.
API and backend integration
The app connects to CRMs, payment gateways, analytics, and third-party services through secure, documented APIs.
Testing on real devices
Automated and manual testing on physical devices for performance, security, accessibility, and edge cases.
Store submission
Submission to the Apple App Store and Google Play, including metadata, screenshots, and compliance reviews.
Support after launch
Monitoring, fixes, OS compatibility updates, and new features from the team that built the app.
04 Industries we build for
Built to the requirements of each sector
Banking and payments
Transaction apps, digital wallets, and KYC onboarding flows built to the financial regulations they must meet.
Healthcare
Appointment scheduling, telemedicine, health tracking, and secure patient messaging, built to HIPAA standards.
Commerce and retail
Shopping apps with personalized recommendations, in-app payments, loyalty programs, and live inventory.
Enterprise and field teams
Internal tools, field-service apps, and workforce management that keep distributed teams working on one system.
AI features
Predictive search, image recognition, and personalized content, built into the app by our AI systems team.
AI systemsSecurity built into every layer of the app
Financial and clinical apps also include audit logging and data residency controls.
- Guidance
- OWASP Mobile Top 10
- Data
- Encrypted storage, TLS in transit, certificate pinning
- Sign-in
- OAuth 2.0, biometric login, role-based access
- Performance
- Bundle-size budgets, lazy loading, caching, battery-aware work
05 Technology stack
Technology chosen for each engagement
Every tool is selected against your requirements for security, cost, latency, scale, and governance, and the choice is made fresh for each engagement.
- Cross-platform
- React Native and Expo
- Native iOS
- Swift, SwiftUI
- Native Android
- Kotlin, Jetpack Compose
- Backend
- NestJS, Java, Python, GraphQL, REST
- Cloud
- AWS, GCP, Firebase
- Testing
- Detox, Appium, XCTest, Espresso
06 Frequently asked
Questions about mobile apps
How much does a mobile app cost?
Determinds prices each mobile app by scope, complexity, and timeline, and sets it out in a written proposal once requirements reach scope sign-off, which takes 5 working days. The proposal names the milestones, the team, and the service level that applies after launch.
How long does a mobile app take?
Determinds typically takes an app from kickoff to its first production release in 8 weeks, and requirements reach scope sign-off in 5 working days. Our team works in two-week sprints with a demo at the end of each, so progress is visible from the first sprint.
Native or cross-platform?
For most business applications, Determinds recommends React Native, which delivers near-native performance at lower cost and with a faster release. Swift for iOS and Kotlin for Android are the better choice when an app needs deep hardware access, complex animation, or maximum performance, and our team settles the trade-off during discovery.
Are apps built for both iOS and Android?
Yes. Determinds builds for both, either from a shared React Native codebase or as separate native builds. The shared codebase is the usual choice, because it launches on both stores together and leaves one codebase to maintain.
Can the app connect to existing business systems?
Yes. Determinds connects apps to CRMs, ERPs, payment gateways, analytics platforms, and any third-party service with an API, through secure, documented integrations.
What happens after launch?
After launch, the Determinds team that built your app supports and maintains it under a service-level agreement, covering monitoring, fixes, OS compatibility updates, performance work, and new features. Usage analytics feed directly into your product roadmap.
Are App Store and Google Play submissions handled?
Yes. Determinds handles the full submission to both stores, covering metadata, screenshots, compliance reviews, and any reviewer feedback, along with store listings written for discoverability.
How is a mobile app kept secure?
Determinds builds every app to OWASP Mobile Top 10 guidance, with encrypted storage, TLS on every API call, certificate pinning, biometric authentication, and role-based access. Fintech and healthcare apps also include audit logging and data residency controls.
Mobile apps
Start your mobile app with a scoping call
Your first conversation is with a Determinds engineer, covering your users, the devices they rely on, and the architecture that fits your app.