Advanced Xamarin Cross-Platform Solutions
Xamarin development for iOS, Android, and Windows. We build, maintain, and migrate C#-based mobile apps for teams invested in the Microsoft stack. With 12+ years of experience, we deliver native-quality performance on every platform.
Get a Custom Xamarin Solution
Our Xamarin app development services cover the full lifecycle, from new C# codebases to maintenance of
apps shipped years ago.
We build Xamarin.Forms and platform-native apps in C#, with shared business logic, MVVM architecture, and platform-specific UI where the user experience demands it.
With Xamarin out of official support, we plan and execute migrations: rewriting Custom Renderers as Handlers and restructuring solutions to the single-project MAUI layout.
Production Xamarin apps still need iOS 18 and Android 15 compatibility, NuGet patching, crash triage, and feature work. We take over codebases other teams have moved on from.
For apps not ready for full migration, we modernize in place: refactor MVVM, replace deprecated dependencies, add CI/CD, and prepare the codebase for an eventual move to MAUI.
Most engagements start with a technical assessment: codebase health, migration cost, dependency risk, and a recommendation that doesn't assume the answer is always "rewrite."
We redesign tired Xamarin interfaces using XAML, custom controls, and SkiaSharp for advanced rendering. Designs follow Material 3 on Android and current Human Interface Guidelines on iOS.
On Xamarin projects, most regressions show up inside custom controls during migration. We cover ViewModels with unit tests, API layers with integration tests, and flows through Appium.
Dedicated Xamarin developers with C# depth, available as augmentation to your existing team or as a fully managed delivery unit from our India, Germany, USA, or Australia offices.
We build C# iPhone and iPad apps with full UIKit access, ARKit experiences, and on-device CoreML for image recognition, NLP, and personalization features.
Native Android apps in C# with Jetpack, Material 3, and ML Kit baked in for OCR, face detection, barcode scanning, and on-device translation.
One shared XAML codebase across iOS, Android, and Windows. We add AI features through ONNX runtime models or Azure Cognitive Services where it makes sense.
Quieter platforms, still alive in enterprise. We build Xamarin.Mac desktop tools and maintain UWP targets, often paired with Azure OpenAI for internal productivity work.
Honest Position on Xamarin vs MAUI
We don't push migration when maintenance is cheaper, and we don't extend an app's life when migration is overdue. Recommendations depend on your codebase.
Deep Microsoft Stack Experience
Xamarin work goes badly when the team only knows the mobile side. Our engineers also build with ASP.NET Core, Azure, and SQL Server.
Migration Work That Actually Ships
We've moved Xamarin.Forms apps to .NET MAUI on real deadlines, with double-digit Custom Renderer counts and third-party controls without clean MAUI equivalents.
Global Delivery With US Time-Zone Coverage
Engineering across India, Germany, the USA, and Australia. For US clients working with our Xamarin app development company USA team, same-day code review is standard.
Our Xamarin app development services help businesses build fast, reliable, and feature-rich cross-platform applications with native performance and seamless user experiences.
Telecom & Media
Energy & Utilities
VT Netzwelt’s 4 engagement models: Dedicated Team, Flexible Development, Fixed Scope & Price, and Maintenance SLAs – scalable, cost-effective, reliable software services.
Dedicated Team
Fixed team skill sets & Constant amount of output
Book your dedicated remote team across various departments with a minimum duration commitment.
Team members exclusively work on your project and interaction will be channeled through a dedicated project manager.
Second highest priority, in case extra resources are needed throughout a month.
Billing – Monthly Fixed.
Flexible Development Model
Flexible team skill sets & Flexible amount of output
Book X days of development and freely interchange them across skill sets throughout the month.
The benefit of a highly engaged team and very short-term resource availability.
The benefit of a dedicated project manager/product manager who fully handles the development team.
Billing – T&M.
Fixed Scope & Price Model
Development for a well-defined scope without changing priorities/requirements.
Fixed timeline / fixed costing after completing a compulsory Business Analysis phase.
Maintenance SLAs
Maintenance & Feature Enhancements.
Fixed monthly time bundles and retainers with preferential and extended support hours.
Dedicated Team
Dedicated Team
Book your dedicated remote team across various departments with a minimum duration commitment.
Team members exclusively work on your project and interaction will be channeled through a dedicated project manager.
Second highest priority, in case extra resources are needed throughout a month.
Billing – Monthly Fixed.
Flexible Development Model
Flexible Development Model
Book X days of development and freely interchange them across skill sets throughout the month.
The benefit of a highly engaged team and very short-term resource availability.
The benefit of a dedicated project manager/product manager who fully handles the development team.
Billing – T&M.
Fixed Scope & Price Model
Fixed Scope & Price Model
Development for a well-defined scope without changing priorities/requirements.
Fixed timeline / fixed costing after completing a compulsory Business Analysis phase.
Maintenance SLAs
Maintenance SLAs
Maintenance & Feature Enhancements.
Fixed monthly time bundles and retainers with preferential and extended support hours.
Our Expanded Services
What Makes Us The Buzz of Tech Town?
Their technical response and depth of thinking have completely amazed us multiple times.
VT Netzwelt delivered high-caliber, scalable products that are highly rated in both the App Store and Google Play. The team expanded in-house capabilities to increase the pace of development and shorten time-to-market. Innovative and knowledgeable, they solve complex challenges with ease.
Benjamin Thym
CEO, Offerista Group GmbH
I rest easy knowing that I have VT Netzwelt backing me up.
In addition to strengthening the overall quality of the mobile apps, VT Netzwelt has grown to assume the responsibility of maintaining and updating the products. With a wealth of valuable development experience, they have proven to be a reliable vendor that strives to provide standout service.
Anonymous
Owner, Meal Planning Service
They turn out quality work every time, with very little need for revisions.
VT Netzwelt has delivered a project plan, a finished app, regular updates, and consistent site uptime. The team is responsive to emergencies and has adapted to the project's progress with communication scalability. They're dedicated and eager to tackle new challenges and understand users' needs.
Anonymous
Executive, So Dialed Racetech
They delivered a more robust product than we expected within the time and budget we had laid out.
The team exceeded expectations by enhancing the solution beyond the requested features. Their regular communication style kept stakeholders informed throughout the project. VT Netzwelt remained within time and cost estimates while maintaining well-organized task management methods.
Anonymous
Co-Founder, Financial Technology Company
They were highly accommodating, transparent, and attentive to detail.
The app performed well and has been downloaded more than 15,000 times. VT Netzwelt offered helpful feedback, responded quickly to inquiries, and delivered assignments on time. Their technical knowledge and structured methodology were both outstanding.
Anonymous
Founder, MindSurf
FAQs
For most new builds in 2026, no. Microsoft ended Xamarin support on May 1, 2024, which means no security patches and no new iOS or Android API support. That said, enterprises deep in the Microsoft stack with existing C# investment sometimes still choose it for short-lived internal apps. Most greenfield projects should start in .NET MAUI, Flutter, or React Native.
In most cases, yes, especially if the app is actively developed or handles regulated data. Timeline depends on Custom Renderer count, third-party dependencies, and project structure. Apps in pure maintenance with no new features can sometimes defer the move for 12 to 18 months with proper security controls in place.
US-based Xamarin work runs roughly $120 to $200 per hour, while blended offshore teams come in at $40 to $80. A typical Xamarin to MAUI migration for a 40 to 60 screen app costs $40,000 to $120,000 depending on Custom Renderer volume, third-party plugins, and testing scope.
Yes, when built correctly. Xamarin.iOS compiles to native code through AOT, and Xamarin.Android uses JIT plus AOT optimizations. Performance issues usually trace back to heavy XAML bindings, oversized image assets, or poorly written Custom Renderers, not the framework itself.
Yes. We take over Xamarin codebases at any stage, including ones where the original team has left. Common work includes iOS and Android version compatibility, NuGet package updates, crash fixes, and adding CI/CD where none existed before.
Yes, and we often run them in parallel. Many clients keep the Xamarin app patched while we migrate a copy alongside it, then cut over once the MAUI version reaches feature parity. This approach avoids freezing the product roadmap during the migration window.
Build Cross-Platform Apps with Xamarin Expertise
From custom development to MAUI migration, we create Xamarin apps built for long-term growth.
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