Xamarin App Development Company C# Maintenance & Support. Fixed Price.
Your Xamarin app still runs — and we still maintain it. As a Xamarin development company that works in deprecated C# codebases other agencies refuse to touch, we deliver bug fixes, feature additions, OS compatibility updates, and migration planning for existing Xamarin apps across USA, UK, Canada and India. Fixed price. Direct engineer access. NDA before discussion.
A Xamarin Development Company That Still Maintains What Others Refuse to Touch
Microsoft deprecated Xamarin in May 2024. Since then, most agencies and freelancers have stopped accepting Xamarin work. Your app runs perfectly today — but when you need a bug fixed, an iOS compatibility update, or a new feature added, you cannot find a C# mobile developer willing to engage with an end-of-life codebase. That is the gap we fill.
Our team works in Xamarin.Forms and Xamarin.Native C# codebases regardless of their age, complexity, or original author. We begin every engagement with a full codebase review — understanding architecture, mapping dependencies, and identifying risk areas before we touch a single line of C#. As a mobile app development company with active C# mobile capability, we maintain your Xamarin app for as long as your business needs it — no pressure, no ultimatums about migrating before you are ready.
When you eventually decide to migrate — whether to .NET MAUI, Flutter, or React Native — our team handles the full migration with feature parity validation, keeping your app live throughout the process. But that decision is yours, on your timeline. Until then, we keep what works, working.
Every Xamarin engagement — bug fix, feature addition, OS update, or monthly retainer — is scoped and priced at a fixed price before any code is touched. Our AI-assisted code review tools accelerate diagnosis on inherited codebases, cutting the time to understand an unfamiliar C# mobile project from weeks to days. NDA signed before any codebase access is granted.
Fixed-price estimate within 48 hours.
What Our Xamarin Support Team Builds for You
Eight Xamarin maintenance and development services — each one scoped at a fixed price, delivered by C# mobile engineers who work in deprecated codebases, with direct access to the engineer doing the work. From emergency bug fixes to full migration planning — every service available as a standalone engagement or ongoing retainer.
Tools and Technologies We Use for Xamarin App Work
We work with the full Xamarin C# toolchain — Xamarin.Forms, Xamarin.Native, and the surrounding Microsoft and third-party ecosystem — to maintain, fix, and extend existing Xamarin apps on iOS and Android.
Real Xamarin Problems. Permanent Solutions.
Every project carries risks — poor UX, missed deadlines, underperforming results. Here is how we eliminate each one.
How We Handle Xamarin App Projects
A six-stage process designed for inherited Xamarin codebases — every issue is diagnosed before work begins, every fix is tested on real devices, every invoice is tied to a specific deliverable. The same discipline we apply across every <a href="/mobile-app-development-company-india/" class="content-link">mobile app development</a> engagement.
Codebase Assessment
We begin with a full review of your existing Xamarin codebase — version compatibility, dependency health, architecture patterns, and known issues. We document exactly what needs to be done before any development work begins, so scope and cost are clear from day one.
Scope & Design Review
For bug fixes, we document the exact issue and confirm the fix approach. For feature additions, we design new screens to match your existing Xamarin app design language and get your approval before any C# code is written. Nothing moves forward without your sign-off.
Fixed-Price Proposal
A fixed-price proposal is delivered covering the exact scope — bug fixes, feature additions, OS compatibility updates, or ongoing monthly maintenance. The price you see is the price you pay. No hourly billing. No scope creep on agreed items.
C# Xamarin Development
Development work runs in focused sprints using C# within your existing Xamarin.Forms or Xamarin.Native architecture. We match your codebase patterns and style. You receive a working build at the end of every sprint — testable on your own iOS and Android devices.
Real Device Testing
Every Xamarin build is tested across real iOS and Android devices to verify fixes work correctly and no existing functionality is broken. We validate across relevant iOS and Android versions before any build goes to you for review or store submission.
Delivery & Ongoing Support
We manage App Store and Google Play update submissions for all Xamarin releases. Post-delivery support is included — any issue arising from our work within 90 days is fixed at no additional cost. Ongoing monthly maintenance retainers available for continuous coverage.
Industry-Specific Xamarin App Development
We deliver AI solutions for Xamarin apps and migrate legacy Xamarin codebases across the industries where enterprise-grade C# architecture, Microsoft ecosystem integration, and regulated data handling matter most — healthcare, logistics, and fintech.
Business Benefits We Delivered
Businesses choose us because of how we work — not just what we build.
Xamarin Migration Paths vs Flutter vs React Native — Which Is Right for You?
When your business is ready to move off Xamarin, three paths are available. Here is an honest comparison to help you choose the right migration target — based on your team, codebase, and long-term product goals.
Not sure which migration path suits your Xamarin app and team? We will assess your codebase and recommend the right target — at no charge.
Get a Free Tech ConsultationHow Much Does Xamarin App Support Cost?
Every Xamarin engagement is scoped individually — bug fixes, feature additions, OS updates, or monthly retainers. All prices are fixed before work begins. No hourly billing. No open-ended invoices.
All prices are fixed — confirmed before work begins. Mobile app development and maintenance costs vary by codebase complexity, scope, and platform requirements. Every quote includes a detailed scope breakdown.
How We Engage With Businesses
Three Xamarin engagement models for different business situations — whether you need immediate bug support, ongoing maintenance coverage, or a planned migration to a modern framework.
A specific bug fix, feature addition, or OS compatibility update scoped and priced at a fixed price before work begins. You know exactly what you are getting — one deliverable, one invoice, no open-ended commitment.
Ongoing monthly Xamarin support covering OS update monitoring, dependency health, priority bug response, and store compliance — for businesses that need continuous coverage without managing individual fix engagements.
Full migration from Xamarin to .NET MAUI, Flutter, or React Native — scoped in full at a fixed price, with your app live throughout the entire migration process.
Technologies & Services We Work On
We use the right technology for each project — battle-tested stacks chosen for performance, scalability, and long-term maintainability.
Mobile App Development
We build high-performance native and cross-platform mobile apps for Android and iOS that deliver seamless user experiences across all devices and screen sizes.
Xamarin Support for Every Business Situation
From a startup maintaining a Xamarin MVP to an enterprise running mission-critical Xamarin apps — we maintain, fix, and extend your C# mobile app at a fixed price. Whether you need immediate bug support or a longer-term mobile app development partner for your Xamarin platform, we work with clients across USA, UK, Canada and India.
Projects We Have Delivered
Examples of cross-platform mobile apps delivered by our mobile app development team — demonstrating our C# and cross-platform mobile expertise across government, media, and enterprise projects.
What Clients Say About Our Mobile Development
Feedback from clients who hired our team for cross-platform and native mobile app development. Every project delivered with direct engineer access, fixed-price commitment, and <a href="/ai-powered-app-development-company-india/" class="content-link">AI-powered development</a> tools.
The Android app with DRM-protected content streaming was exactly what we needed. Widevine integration worked perfectly from day one. The team understood our requirements completely and delivered without compromise.
The Flutter app delivered for our field team works flawlessly even in low-connectivity areas. Offline sync was exactly what we needed. Post-launch support has been excellent.
Mobile App Development Insights
Practical guides from AZRIVA's engineering team — covering cross-platform development, maintenance strategies, and technology migration planning.
Frequently Asked Questions
Our team has answered the most common questions about our services.