- +1.844.3539.746
- info@flexsin.com
Flexsin App Development Experts Can Help Get a Free Consultation
Facing App Development Challenges? We Solve - You Scale | Reliable Apps, Zero Headaches
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Costs Exceed BudgetUser's Frustration:
Quoted 50K, billed120K-developers exploit vague contracts to nickel-and-dime us.
Flexsin's Fix:Fixed-price agreements with itemized deliverables prevent scope creep. Our pre-built modules cut development time by 40% without sacrificing functionality.
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App Crashes DailyUser's Frustration:
5-star ratings turn to 1-star overnight as users face constant freezing and crashes.
Flexsin's Fix:Native SDK optimization (Swift/Kotlin) eliminates performance bottlenecks. Real-time crash reporting ensures 90% of critical bugs get fixed within 12 hours.
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Data Leaks HappenUser's Frustration:
Found our Firebase credentials publicly exposed on GitHub-now facing GDPR violation fines.
Flexsin's Fix:Automated secret scanning embeds security into CI/CD pipelines. Quarterly penetration tests guarantee OWASP Top 10 compliance before launch.
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App Store RejectionsUser's Frustration:
Three months wasted on Apple's arbitrary rejections for 'design inconsistencies' they can't specify.
Flexsin's Fix:Pre-submission audits by ex-Apple reviewers catch compliance issues early. Our apps achieve 98% first-time approval with zero resubmissions.
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Offline Mode FailsUser's Frustration:
Field agents lose entire workdays when the app can't save without signal.
Flexsin's Fix:Differential sync technology (SQLite + CRDTs) preserves all offline operations. Data auto-merges perfectly-even after 7 days disconnected.
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Can't Handle TrafficUser's Frustration:
Viral moment became a disaster as 50K users crashed our servers instantly.
Flexsin's Fix:Serverless architecture (AWS Lambda + Cloudflare) scales to 2M+ concurrent users. We simulate Black Friday traffic during QA.
360° Mobile App Development Services Build Smarter | Launch Faster | Scale Wider
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App Prototyping & Design
From Vision to Interactive
RealityTurn ideas into tangible, testable prototypes with sleek UI/UX that captivates users and investors alike.
Wireframing | High-Fidelity Mockups | User Journey Mapping -
iOS App Development
Premium Apps for Apple's Elite Ecosystem
Build lightning-fast, polished iOS apps that leverage Swift, ARKit, and Apple's latest tech for unmatched performance.
SwiftUI | AR / VR Integration | App Store Optimization -
Android App Development
Scalable, Secure, and Universally Compatible
Create robust Android apps for billions of users, from sleek Kotlin solutions to foldable-device optimization.
Kotlin / Java | Material Design | Multi-Device Support -
Enterprise App Development
Powering Businesses with Secure Mobility
Streamline operations with custom enterprise apps-offline sync, role-based access, and ironclad security.
ERP / CRM Integration | HIPAA/GDPR Compliance | Cross-Platform Sync -
Gaming App Development
Immersive Worlds, Unstoppable
EngagementFrom hyper-casual to multiplayer AR, craft addictive gaming experiences with Unity, Unreal, and beyond.
2D / 3D Game Engines | In-App Monetization | Leaderboard APIs -
QA & Maintenance
Flawless Performance, Around
the ClockRigorous testing and proactive updates to keep your app crash-free, scalable, and ahead of competitors.
Automated Testing | Bug Fixing | Post-Launch Support
Tech Mastery, Delivered! Modern Frameworks & APIs'
Language & Frameworks
- Native: Objective-C, Swift, Cocoa/Cocoa Touch
- Cross-Platform: React Native, Flutter, NativeScript, Xamarin
- Web Tech: Unity3D, Cocos2d, Cocos2d-x
- Game Engines: JavaScript, PhoneGap, Titanium, Ionic, Sencha Touch
- Other: C#, Dart, OpenGL ES
Libraries
- Apple Ecosystem: StoreKit, PushKit, CallKit, ARKit, Core Data
- Networking: Alamofire, RestKit, Socket Client, Sinch, QuickBox
- Reactive: RxSwift, ReactiveX
- UI/UX: Lottie, NativeBase, Material Kit React Native
- Database: REALM, FMDB, SQLite
- Utilities: ShareKit, getLT, Dio
APIs
- Analytics: Universal Analytics, Firebase Analytics
- Payments: PayPal, Datatrans, Razorpay, Stripe, Fiserv
- Communication: Twilio, Sinch
- Social: All social networking APIs (from original)
- AR/Scanning: Wikitude, RedLaser API
- Cloud: Firebase, Urban Airship
- Google: All Google APIs (from original)
Let's Talk Numbers. Proven Measurable Outcomes.
- 5M + Installs
- 0.01% Crash Rate
- 2.5x ROI
- 55 % Retention
- 700 + Businesses Scaled
Domain-Driven Mobile App Solutions Dominate Your Niche with Sector-smart Apps
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Healthcare Apps
HIPAA-secure platforms giving doctors and patients instant access to critical data - built by expert healthcare app development teams. -
Utility Apps
Enterprise-grade tools that automate workflows and slash operational time waste, crafted by a top-tier app development agency. -
Social Media & Dating
Algorithm-powered networks where meaningful connections turn into lasting engagements, developed by skilled social app development specialists. -
E-commerce Apps
Conversion-optimized storefronts that reduce cart abandonment and boost repeat sales, engineered by app developers specializing in retail tech. -
Lifestyle Apps
AI-curated experiences that proactively enhance users' daily health and wellness, designed by iOS/Android app studios. -
Fun & Entertainment
Sticky content ecosystems where users spend 30% longer than competitors, powered by Unity developers and game programmers. -
Mobile Wallet
Biometric-secured payment solutions with 99.99% uptime for flawless transactions, built by wallet app development experts. -
Education & Non-profit Apps
Gamified learning platforms that increase donor retention by 40% annually, created by e-learning app development teams. -
Game & Sports
AAA-quality mobile titles with professional esports-level competitive frameworks built-in, developed by Unity development pros.
Success Stories in Action Delivering Speed, Performance, and Real Results
PieTossing Entertainment Mobile App Transformed Everyday Conversations With Interactive Humor
As the client aimed to create an engaging mobile app, the goal was to build a platform that humorously reacts to user-generated...
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Rebuilding A Feature-Rich Mobile App For An Astro Consulting Firm
The client desired to consolidate their app code usage into a single hybrid technology. Thus, it envied adopting a framework,...
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Real Estate Listing iOS App Development Maximized The Efficiency Of US Brokers
The client felt the need to improve the outcomes for its target audience - brokers - in the US. To do that, the client wanted...
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A Loyalty Program App Helped A Cosmetic Brand Maximize Its Sales
The brand managed by the client had already established a commanding presence in the cosmetics market. Since the brand has many...
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Data-Tracking App That Helped An American Equestrian Performance Sporting Business Lift Its ROI By 20%
The client already had a website that enjoyed massive patronage. However, now, the client wanted to enter the mobile app scene...
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AI Enabled Hybrid Mobile App to Get Pros and Cons Information of Any Debate Topic
To satisfy the interest of debaters, the client wanted to build an app that could run on iOS and Android platforms. They wanted...
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Clinikio: Online Doctor Consultations & Appointments Mobile App
The client wanted to redefine its healthcare practice, including consultation. To that end, the client was looking for virtual...
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Crowdit: Content & Events Aggregator for Sports Games, such as Baseball, Basketball and Soccer
The client wanted to build an app that could be fans of different games, such as baseball, basketball and soccer. The client also...
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Online Dating App With Audio-Video Calling And Private Chatting
The app is an innovative chat-to-meet people dating platform that allows you to connect with the likeminded people who are looking...
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Specialized application for enthusiasts to discuss sports and related updates
The client wanted to develop a platform exclusively for sports enthusiasts wherein they can discuss everything related to games...
VIEW CASE STUDYServing Diverse Industries, Profitably
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Software & Hi-Tech
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Retail & Commerce
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Travel & Hospitality
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Real Estate
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Banking & Finance
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Industrial & Manufacturing
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Education & Learning
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Healthcare & Life Science
Why Flexsin? Develop | Deploy | Dominate
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Agile Development, Faster Time-to-Market
Game programmers to Swift developers, our sprint-driven process delivers your MVP in 4-6 weeks - guaranteed.
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Intuitive UX That Drives Retention
From app design to social app development, we craft addictive interfaces that slash churn rates.
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Scalable Architecture for Growing Demand
Building an app? Our Flutter/Kotlin solutions scale seamlessly - 1 user or 1M, performance never dips.
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Enterprise-Grade Security & Compliance
Healthcare or wallet app development?
We implement HIPAA/GDPR-ready security with zero vulnerabilities. -
Post-Launch Support & Optimization
60 days of free updates-because even the best React Native/iOS apps need fine-tuning.
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Future-Ready Tech
StackUnity development to Xamarin-we use cutting-edge tools for high-performance, maintainable apps.
Delighting Clients Globally
Frequently Asked Questions
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How to build a mobile app for my startup?Our app development agency delivers scalable apps for startups-from MVP to full launch-using Flutter, React Native, or native (Swift/Kotlin).
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Do you have expert Swift developers for iPhone app development?Yes. Flexsin's iOS app developers specialize in Swift for high-performance, App Store-ready iPhone apps.
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Can you create a mobile app for healthcare with HIPAA compliance?Absolutely. Our healthcare app development team ensures HIPAA/GDPR compliance, EHR integration, and secure data handling.
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Are you a Flutter development services provider?Top-tier. Our Flutter developers build cross-platform apps with 1 codebase for iOS/Android, cutting costs/time.
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Need a game programmer for Unity development—can you help?Yes. Our Unity developers craft immersive 2D/3D games with AR/VR support for mobile platforms.
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How much to build an Android app with Kotlin?Cost depends on features, but our Kotlin developers optimize for performance at competitive rates.
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Want to develop a social app like Instagram/TikTok—possible?Done. Our social app development covers feeds, real-time chat, and AI-driven content moderation.
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Are you an app design company with UI/UX expertise?100%. We merge sleek UI/UX with robust app development services for seamless user journeys.
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Need React Native developers for a taxi app development project?We've built Uber-like apps with geotracking, payments, and driver-passenger APIs using React Native.
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How long to build an iPhone app from scratch?3–6 months. Our iOS app developers accelerate timelines without compromising quality.
12222 Merit Drive, Suite 860,
info@flexsin.com