Mobile App Development Services for iOS and Android
Most mobile apps die between the pitch deck and the App Store review. The wrong framework gets chosen, platform constraints get ignored, and the app that ships is slow, drains batteries, and gets rejected twice. Stixor builds mobile apps in React Native and Flutter that ship, perform, and stay in the store. Both platforms, one codebase, native quality.

What Do Mobile App Development Services Include?
Mobile app development services cover the design, build, and release of applications for iOS and Android devices. This includes cross platform development using React Native or Flutter for teams shipping both platforms from one codebase, app store submission and approval management, and the backend APIs, authentication, and infrastructure the app depends on. Stixor delivers this end to end, from product strategy through app store launch and post release support.
The Stixor Approach to Mobile App Development
We build mobile apps that ship on time, perform on real devices, and survive App Store and Play Store review. Every engagement is structured around what determines mobile success: real hardware performance, store compliance, and a codebase your team can extend.
WHY US
Right Stack, No Bias
Native is right when performance and platform depth matter most. Cross platform is right when time to market and team economics take priority. We recommend based on your product, your team, and your timeline, not our preferred framework.
Built for Store Review
We build with App Store and Play Store guidelines from sprint one: permission handling, subscription flows, privacy declarations, and platform design guidance. Fewer rejections means faster releases and less rework for your team.
Real Device Performance
We test on real hardware including older devices, slow networks, and low battery scenarios. Simulators lie about performance. Every release ships with testing across the OS versions your user base actually runs.
Backend That Grows with the App
An app is only as reliable as the backend it talks to. We build APIs, authentication, push notifications, analytics, crash reporting, and feature flags alongside the app from day one, not when problems arrive in production.
CAPABILITIES
Mobile App Development Capabilities We Deliver
Six core engagement patterns cover the full spectrum of mobile app work. Each can be engaged standalone or combined into a broader mobile program built around your product and platform requirements.
React Native App Development
Mobile apps in React Native with TypeScript for teams already invested in the JavaScript ecosystem. React Native shares code across iOS and Android while still allowing native module access when the framework needs to reach platform specific APIs. Ideal for products backed by web teams, startups shipping both platforms fast, and apps where business logic is shared across mobile and web.
- React Native development with TypeScript and Expo
- Native module integration for platform specific features
- Code sharing between mobile and web where architecture supports it
- Performance optimization for smooth animations and fast load times
Flutter App Development
Mobile apps in Flutter with Dart for products that need pixel perfect consistency across iOS and Android. Flutter renders its own UI layer, which means identical visual behavior on both platforms without platform specific shimming. Ideal for products with custom UI, animation heavy interfaces, or teams starting fresh without an existing JavaScript codebase
- Flutter development in Dart with Material and Cupertino widgets
- Custom UI components and animation heavy interfaces
- Platform channel integration for native device features
- Single codebase delivering consistent UX across iOS and Android
Backend, APIs, and Mobile Infrastructure
Every mobile app needs a backend. We build APIs, authentication systems, and infrastructure services designed for mobile client patterns. Push notifications, deep linking, analytics, crash reporting, feature flags, and remote configuration wired in from day one so you can operate the app without releasing every time something needs to change.
- Backend APIs in Node.js, Python, or Go designed for mobile clients
- Authentication: OAuth, SSO, biometric, and social login
- Push notifications, deep linking, and universal links
- Analytics, crash reporting, feature flags, and remote configuration
App Store Optimization and Launch Strategy
Getting into the store is only the start. We handle submission assets, metadata optimization, screenshot design, category positioning, and the review process for both App Store and Play Store. Post launch, we monitor ratings, reviews, and conversion metrics to improve store listing performance over time.
- App Store and Play Store submission and review management
- Metadata optimization: title, subtitle, description, and keywords
- Screenshot and preview video preparation for store listings
- Post launch monitoring of ratings, reviews, and conversion rates
In App Monetization and Subscription Integration
We implement in app purchases and subscriptions on iOS and Android including receipt validation, subscription lifecycle handling, and RevenueCat integration for subscription management. Trial flows, promotional pricing, paywall A/B testing, and analytics showing where users convert and churn are part of standard monetization work.
- In app purchases and subscription implementation on both platforms
- RevenueCat integration for subscription management
- Paywall design, A/B testing, and conversion analytics
- Trial flows, promotional pricing, and churn tracking
OS Updates and Ongoing Mobile Maintenance
Mobile OS updates break things. New versions deprecate APIs, change UI behavior, and introduce privacy requirements that break existing apps. We monitor platform announcements from Apple and Google, evaluate impact on your app, and ship updates before deprecations become mandatory. Available as an ongoing retainer so your app stays current without pulling your team off feature work.
- iOS and Android OS update impact assessment
- React Native and Flutter framework version upgrades
- Dependency updates and deprecated API migration
- Ongoing feature development and maintenance on retainer
What We Actually Deliver
We deliver complete mobile app solutions covering research, UI/UX design, frontend and backend development, API integration, testing, and deployment .
Deliverable
01
Requirement Gathering & Planning
We analyze user needs, business objectives, and technical constraints to define app scope, platform strategy, feature roadmap, and success metrics.
- Identify user needs
- Define project goals
- Understand business requirements
02
UI/UX Design & Prototyping
We design intuitive mobile experiences with wireframes and prototypes focused on usability, accessibility, and engaging user interactions.
- Create wireframes and prototypes
- Design interactive interfaces
- Ensure user-friendly experience
03
App Development
We build secure, scalable mobile applications with backend integration, API connectivity, and optimized performance across iOS and Android platforms.
- Build mobile application
- Integrate APIs seamlessly
- Ensure cross-platform functionality
04
Testing & Deployment
We perform rigorous QA, optimize performance, and manage app store deployment with continuous monitoring and maintenance support.
- Conduct quality assurance
- Optimize app performance
- Launch on app stores
INDUSTRIES
Industries We Build Apps For
We have delivered mobile apps across industries where performance, security, and platform compliance shape every technical decision. Each vertical brings distinct user expectations, device constraints, and regulatory requirements.
Fitness
Developed AI-powered monitoring solutions to detect abnormal user activity, device data inconsistencies, and performance trends. Improved personalization, data accuracy, and user engagement while enabling fitness platforms to deliver safer, smarter, and more adaptive health experiences.
Gaming & Entertainment
Built intelligent monitoring systems to detect abnormal player behavior, fraud, and performance issues in real time. Improved platform stability, enhanced user experience, reduced cheating, and protected revenue streams while supporting scalable, high-traffic gaming and entertainment ecosystems.
Real Estate
Implemented smart anomaly detection systems to monitor property data, pricing trends, transactions, and user activity. Enabled early detection of irregularities, improved investment decisions, reduced risk exposure, and enhanced transparency across real estate platforms and digital marketplaces
Get in Touch with Stixor
Partner with us to understand your business goals and create solutions that drive measurable results. Reach out today and take the first step toward transforming your data into a strategic asset with Stixor.
CONTACT US
What Our Clients Say
TESTIMONIALS
Frequently Asked Questions
FAQs
Cost depends on scope, framework choice, and backend complexity. A focused MVP shipping both iOS and Android from one codebase runs at the lower end. Full production apps with complex features, backend infrastructure, third party integrations, and monetization run considerably higher. Building with React Native or Flutter is more cost effective than maintaining two separate native codebases while delivering comparable quality. You receive a detailed scope and cost model during discovery before any commitment.
A focused MVP with a clean scope typically takes ten to fourteen weeks from discovery through App Store or Play Store submission. Production apps with backend development, third party integrations, and full feature scope typically run four to seven months. Add two to four weeks for store review depending on what you are shipping. You receive a phased timeline with milestones during discovery so deadlines are visible from the start.
Yes. We work across the spectrum from early stage startups building their first app to established organizations adding mobile to an existing platform. Startups get leaner process, faster iteration, and tighter scope discipline. Larger clients get structured governance, stakeholder review cadences, and coordination across teams. We recommend the approach based on your team size, timeline, and product maturity.
Both frameworks are production ready and most users cannot tell the difference from a native app. React Native is the stronger choice when your team already works in JavaScript or TypeScript, when you want to share code between mobile and web, or when your product relies on a large ecosystem of community packages. Flutter is the stronger choice when you need pixel perfect consistency across both platforms, when your product has heavy custom UI or animations, or when your team is starting fresh. We recommend based on your specifics during discovery.
Yes. We build with store guidelines in mind from the start, which prevents most rejections before they happen. When submissions encounter reviewer feedback, we handle the response and revision cycle. Common rejection reasons like missing privacy declarations, subscription flow issues, permission justifications, and metadata problems are anticipated during development rather than fixed after a rejection delays your launch.
Yes. Every engagement includes documentation, CI/CD setup, and knowledge transfer. Code is written to be readable, tested, and maintainable. We deliver runbooks covering release processes, common issues, and monitoring dashboards. Some clients keep us on retainer for OS version updates, feature development, and store operations. Others transition to in house teams after the initial engagement. Both paths work.
Yes. We build backend APIs designed for mobile client patterns: efficient payloads, offline support, retry logic, and real time updates where needed. If you already have backend systems, we integrate rather than rebuild. We work with REST, GraphQL, and gRPC, and connect to existing databases, authentication providers, payment platforms, and analytics infrastructure your business already runs on.
Mobile OS updates break things. New versions deprecate APIs, change UI behavior, and introduce privacy requirements that break existing apps. On top of that, React Native and Flutter themselves release major updates that need careful migration. We monitor all three, evaluate impact on your app, and ship updates before deprecations become mandatory. For clients on retainers, this is included.
Yes. We implement in app purchases and subscriptions on iOS and Android including receipt validation, subscription lifecycle handling, and RevenueCat integration for subscription management. Trial flows, promotional pricing, paywall A/B testing, and analytics showing where users convert and churn are part of standard monetization work we handle regularly.
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