Xamarin App Development & .NET MAUI Migration Experts
Xamarin App Development Company and Xamarin to .NET MAUI Migration Services
One shared C#/.NET codebase. Native iOS, Android, and Windows apps. Stallyons is the senior team that builds new Xamarin and .NET MAUI apps and migrates end-of-life Xamarin.Forms projects onto supported .NET MAUI.
Built for Every Platform
- iOS App Store Ready
- Google Play Ready
- Native Performance
Triple Platform Guarantee:
- iOS App Store Ready
- Google Play Ready
- Native Performance
Apps Launched
0
+
Faster Development
0
%
Code Reuse
0
%
Our Xamarin Capabilities
iOS Apps
90+ Shipped
Android Apps
95+ Shipped
Windows Apps
40+ Builds
.NET MAUI
60+ Migrations
C# Codebase
90% Reuse
Azure Cloud
70+ Integrations
XAML UI/UX
150+ Screens
API Layer
120+ APIs
QA & Testing
200+ Devices
Avg. App Rating
4.8★
On-Time Delivery
96%
↑ 4%
Repeat Clients
81%
Trusted By Startups
Xamarin App Development Services and .NET MAUI Migration
Xamarin app development services help businesses build native iOS, Android, and Windows apps from one shared C# and .NET codebase. Xamarin to .NET MAUI migration services move an existing Xamarin or Xamarin.Forms app onto .NET MAUI, its supported successor, so it keeps receiving platform updates. Instead of funding separate native teams, companies ship faster, standardize on .NET, and deliver consistent performance on every platform.
Working with an established Xamarin and .NET MAUI development agency gives you the mature Microsoft ecosystem, backed by Visual Studio, NuGet, and first-class Azure integration. Already own a Xamarin app? We support it as it stands and plan a staged move to .NET MAUI on your timeline. To compare frameworks first, see cross-platform app development.
Our Full Xamarin & .NET MAUI Range
Cross-Platform App Development : One C#/.NET codebase compiled to native iOS, Android, and Windows, sharing up to 90% of logic while keeping platform-native UI and performance.
.NET MAUI Modernization : Migrate end-of-life Xamarin.Forms apps to .NET MAUI, or move native iOS/Android apps to a single shared codebase on the latest .NET.
Native UI with XAML : Pixel-perfect XAML interfaces that respect Apple Human Interface Guidelines and Google Material Design, with native controls on every device.
Azure & Enterprise Integration : First-class Azure, App Service, Notification Hubs, and Active Directory / Entra ID integration that aligns mobile with your existing .NET backends.
API & Backend Engineering : ASP.NET Core APIs, offline-first sync, secure authentication, and payment integration built by the same team that ships your app.
QA, Store Launch & Support : Automated testing across real devices, App Store / Google Play / Microsoft Store deployment, and long-term .NET maintenance via Azure DevOps CI/CD.
Why Businesses Choose Our Xamarin & .NET MAUI Team
- Single C# Codebase: Up to 90% shared code across iOS, Android, and Windows means one team, one language, and dramatically lower maintenance than three native builds.
- Native Performance: AOT compilation to native ARM code and native UI controls deliver performance indistinguishable from fully native apps for the vast majority of business apps.
- Deep .NET & Azure Fit: Visual Studio, NuGet, Entity Framework, and first-class Azure integration align your mobile app with the Microsoft ecosystem you already run.
- Senior .NET Engineers: The C#/.NET architect who scopes your app ships it. No outsourced juniors, no black-box handoffs.
- Faster Time to Market: Shared logic and a proven Xamarin/.NET MAUI lifecycle cut development time roughly in half versus separate native iOS and Android teams.
- Future-Proof on .NET: We build on the current .NET and migrate Xamarin.Forms to .NET MAUI, so your codebase stays supported and easy to hand off.
How to Engage Our Xamarin Team
Every engagement starts with a free consultation. No slide deck and no sales script. You bring your app idea or existing Xamarin project, we map the C#/.NET path, and you leave with a clear scope whether you choose to work with us or not.
We work as your long-term .NET mobile partner, not a one-time vendor. From strategy and XAML design to store deployment and ongoing maintenance, one senior team owns the entire Xamarin and .NET MAUI lifecycle.
Why Clients Choose Our Xamarin Team
150+
Apps Launched
50%
Faster Development
90%
Code Reuse
40%
Cost Savings
Ready to build native iOS, Android, and Windows apps from one C#/.NET codebase?
What We Build
Xamarin & .NET MAUI Apps Built for Every Platform
From consumer apps to enterprise line-of-business tools, we build cross-platform apps your users love on a single .NET codebase.
Consumer Apps
iOS, Android, Windows from one codebase
3 PLATFORMS
Enterprise Apps
Line-of-business & internal tools
5 SYSTEMS
.NET MAUI Migration
Xamarin.Forms to modern .NET MAUI
LATEST .NET
SaaS Mobile Apps
Subscriptions, auth, billing in C#
4 CAPABILITIES
Native UI (XAML)
iOS, Android, Windows, macOS
4 PLATFORMS
Azure Integration
App Service, Entra ID, Notification Hubs
5 SERVICES
API & Backend
ASP.NET Core, offline sync, REST
5 CAPABILITIES
DevOps & CI/CD
Azure DevOps, App Center, pipelines
5 TECHNOLOGIES
QA & Device Testing
Automated tests across real devices
1 SUITE
Maintenance & Support
Updates, monitoring, .NET upgrades
4 CAPABILITIES
Not sure which approach fits your app? Let's map it together.
Common Challenges
Why Businesses Struggle Without the Right Xamarin Partner
These challenges show why choosing an experienced Xamarin and .NET development agency is critical for scalable, secure, and cost-effective mobile apps.
Separate iOS & Android Teams
01
Funding two native teams in Swift and Kotlin doubles cost and splits your roadmap. Features drift out of sync and every fix ships twice.
Rising Development Costs
02
Halfway through, you realize you need an ML model or a no-code campaign — but your vendor doesn't do that. Now you're sourcing a new shop while burn rate climbs.
.NET Talent Gaps
03
Finding senior Xamarin and .NET MAUI engineers who understand mobile, Azure, and enterprise integration is hard and slow to hire in-house.
Poor Native Performance
04
Cheap hybrid or WebView shortcuts feel sluggish and fail App Store review. Users notice, ratings drop, and re-platforming is expensive.
Slow Time to Market
05
Building, testing, and releasing two codebases in parallel pushes launch out by months while burn rate keeps climbing.
Aging Xamarin.Forms Code
06
Xamarin.Forms is end-of-life. Without a .NET MAUI migration path your app is stuck on an unsupported framework and mounting tech debt.
Struggling with these challenges? A trusted Xamarin app development partner can cut costs, boost native performance, and scale across platforms.
Our Xamarin Services
6 Core Xamarin & .NET MAUI Service Lines
From C#/.NET strategy and XAML design to deployment and long-term support, end-to-end Xamarin and .NET MAUI services for startups and enterprises.
Cross-Platform App Development
01
Native iOS, Android, and Windows apps from a single C#/.NET codebase using Xamarin and .NET MAUI, sharing up to 90% of logic while keeping platform-native UI and performance.
.NET MAUI Development & Migration
02
Modernize end-of-life Xamarin.Forms apps to .NET MAUI, or migrate native apps to one shared codebase on the latest .NET, ready for iOS, Android, Windows, and macOS.
XAML UI/UX Design
03
Intuitive, pixel-perfect XAML interfaces following Apple Human Interface Guidelines and Google Material Design, validated early with interactive prototypes.
Azure & API Integration
04
ASP.NET Core APIs, offline-first sync, secure authentication, payments, and first-class Azure, App Service, and Entra ID integration for enterprise-ready apps.
QA, Testing & Store Launch
05
Automated testing across real iOS and Android devices, plus App Store, Google Play, and Microsoft Store deployment with full platform compliance.
Maintenance & Support
06
Long-term .NET mobile partnership: OS and .NET compatibility updates, performance monitoring, and feature enhancements via Azure DevOps CI/CD.
Need to combine strategy, design, build, and support into one Xamarin engagement?
Why Xamarin
Benefits of Choosing Our Xamarin App Development Company
Work with experienced Xamarin and .NET MAUI developers to build faster, scalable, and cost-efficient native apps.
One C#/.NET Codebase
01
Up to 90% shared code across iOS, Android, and Windows. One language, one team, one codebase to maintain instead of three.
50% Faster Development
02
Shared logic and a proven Xamarin lifecycle cut build time roughly in half versus separate native iOS and Android teams.
Native Performance
03
AOT compilation to native ARM code and native UI controls deliver performance indistinguishable from fully native for business apps.
Deep .NET & Azure Fit
04
Visual Studio, NuGet, Entity Framework, and first-class Azure integration align mobile with your existing Microsoft stack.
Lower Total Cost
05
One codebase cuts development and maintenance cost by around 40% while keeping native quality on every platform.
Future-Proof on .NET
06
We build on the latest .NET and migrate Xamarin.Forms to .NET MAUI, so your app stays supported and easy to hand off.
Ready to build cross-platform apps that share one C#/.NET codebase?
Our Process
Our Xamarin App Development Process
As an agile .NET development agency, we follow a proven Xamarin and .NET MAUI lifecycle to reduce risk, ensure quality, and deliver on time.
Discovery
Goals, requirements, .NET architecture
Design
XAML UI/UX and interactive prototypes
Development
C#/.NET agile sprints, weekly demos
Testing
QA across real iOS and Android devices
Launch
App Store, Google Play, Microsoft Store
Support
Updates, monitoring, .NET maintenance
Want to see how this maps to your Xamarin project?
Technology Stack
Modern Tech Stack Used by Our Xamarin Developers
As a full-stack .NET app development company, we use a modern, reliable, and scalable stack to build secure, high-performance Xamarin and .NET MAUI apps.
Web & Backend
Next.js / React
Node.js / Vue
Python / Django
.NET / Java
TypeScript
Mobile & Cross-Platform
Swift / iOS
Kotlin / Android
React Native
Flutter
Ionic / HarmonyOS
AI / ML / Data
OpenAI / Claude
Gemini / Qwen
PyTorch / TensorFlow
Hugging Face
SageMaker / Vertex AI
Ecommerce & CMS
Shopify / Plus
BigCommerce
WooCommerce
Magento / OpenCart
Webflow / Framer
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Technology Stack
Modern Tech Stack Used by Our Xamarin Developers
As a full-stack .NET app development company, we use a modern, reliable, and scalable stack to build secure, high-performance Xamarin and .NET MAUI apps.
Web & Backend
Next.js / React
Node.js / Vue
Python / Django
.NET / Java
TypeScript
Mobile & Cross-Platform
Swift / iOS
Kotlin / Android
React Native
Flutter
Ionic / HarmonyOS
AI / ML / Data
OpenAI / Claude
Gemini / Qwen
PyTorch / TensorFlow
Hugging Face
SageMaker / Vertex AI
Ecommerce & CMS
Shopify / Plus
BigCommerce
WooCommerce
Magento / OpenCart
Webflow / Framer
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Industries We Serve
Xamarin Apps for Every Sector
Deep domain expertise ensures your Xamarin and .NET MAUI app meets industry-specific requirements.
Fintech & Banking
Payments, KYC, regulatory tech
Healthcare & HealthTech
HIPAA, telehealth, clinical SaaS
Retail & E-Commerce
DTC, B2B, marketplace, headless
EdTech & Learning
LMS, course platforms, proctoring
Manufacturing & Industrial
IoT, predictive maintenance, MES
Logistics & Supply Chain
Routing, fleet, warehouse, B2B
Legal & LegalTech
Document AI, contract analysis
Media & Entertainment
Streaming, content AI, audience
We understand your vertical. Let's build a cross-platform app that leads your category.
Why Choose Stallyons?
Why Choose Our Xamarin App Development Company
An honest comparison to help you make the right cross-platform decision.
| Factor | Native (Separate) | Hybrid / WebView | Flutter | Xamarin / .NET MAUI |
|---|---|---|---|---|
| Development Cost | ✕ 2x Higher | Low | Moderate | 40% Lower |
| Time to Market | ✕ 2x Longer | Fast | Fast | 50% Faster |
| Performance | Excellent | ✕ Poor | Excellent | Native (AOT) |
| Code Reuse | ✕ 0% | 100% | 95% | 90% |
| Enterprise & Azure Fit | Limited | Limited | Moderate | Native .NET |
| Native Feature Access | Full | ✕ Limited | Full | Full |
| Long-Term .NET Support | Per Platform | ✕ Fragile | Dart / Google | Microsoft .NET |
See the Xamarin difference for yourself
Complete Package
Hire a Trusted Xamarin App Development Agency Risk-Free
From Strategy to Launch to Support, All Under One Roof
Here's everything included when you partner with our Xamarin team:
Complete Xamarin Development Package - No Hidden Costs
Every engagement includes all 8 components above, from C#/.NET strategy to store deployment and support. One contract, one quality bar, no surprises.
🔒 No obligation. We'll provide a detailed proposal within 48 hours.
Free Bonuses Included With Your Xamarin App Project
Free App Strategy Session
A senior Xamarin architect reviews your app idea or existing codebase and maps the fastest cross-platform path. Yours free whether you sign or not.
Included Free
Xamarin Development Roadmap
Phased delivery plan with milestones, a .NET architecture outline, and a transparent, detailed cost estimate for your app.
Included Free
Proof-of-Concept Sprint
For qualifying projects, a 1-week PoC in C#/.NET so you see native cross-platform work product before committing to a full engagement.
Included Free
Risk-Free Partnership
Our Triple Platform Guarantee for Xamarin Apps
We stand behind every Xamarin app with commitments that protect your investment
01
Triple Platform Delivery
We ship iOS, Android, and Windows from one C#/.NET codebase, with guaranteed successful deployment to the App Store, Google Play, and Microsoft Store.
02
Native Performance & Quality
AOT-compiled native code, native UI controls, and QA across real devices. If performance or quality slips, we fix it at no extra cost.
03
Long-Term .NET Support
We stay on as your .NET mobile partner with OS and .NET compatibility updates, monitoring, and enhancements, not a one-time vendor.
Build with zero risk, backed by our Triple Platform Guarantee
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"We came to Stallyons after burning two years and four vendors on a multi-platform launch that kept slipping. They scoped it end-to-end — web app, iOS, Android, an AI summarization layer, and a Shopify integration — and shipped it in 22 weeks. One team, one budget, one quality bar. We've handed them three more engagements since."
Mark Sawyer
CEO/Founder
PlatinumLED
"Stallyons rebuilt our customer-facing portal, integrated three legacy systems, shipped an AI document analysis pipeline, and brought our compliance posture to SOC 2 — all under one engagement. The senior engineers on the team have shipped at companies five times our size. It's the best vendor decision we've made in a decade."
Mark Sawyer
CEO/Founder
PlatinumLED
FAQ
Frequently Asked Questions About Xamarin & .NET MAUI
Xamarin app development cost depends on complexity, features, and timeline. A simple app costs less, while feature-rich enterprise apps require a larger investment. Because Xamarin and .NET MAUI share up to 90% of code in C#, you typically save 30-50% versus building separate native iOS and Android apps. We provide a detailed, transparent estimate after your free consultation.
Timelines depend on scope. A basic MVP can be ready in 2-3 months, while complex apps typically take 4-6 months. Because Xamarin shares one C# codebase, you get iOS, Android, and Windows apps within a single timeline, roughly half the effort of separate native builds.
Yes. Xamarin compiles to native ARM code through AOT compilation and uses native UI controls, so for the vast majority of business apps the performance is indistinguishable from fully native. For performance-critical sections, we can drop into native bindings whenever needed.
Yes. Xamarin to .NET MAUI migration services move your existing Xamarin or Xamarin.Forms app onto .NET MAUI, its supported successor. We offer complete rebuilds or incremental migrations that consolidate your codebase, reduce maintenance, and keep your app on a supported .NET release. We also still support and extend Xamarin apps that are not ready to move yet.
Yes. Xamarin apps are fully native and meet all App Store, Google Play, and Microsoft Store requirements. We follow Apple’s Human Interface Guidelines and Google’s Material Design, and our guarantee includes successful store deployment across platforms.
Yes. We provide complete post-launch support including bug fixes, OS and .NET compatibility updates, performance monitoring, and feature enhancements. We act as your long-term .NET mobile partner, not a one-time vendor.
Xamarin has reached end of support, and .NET MAUI is its successor from Microsoft. Your app does not stop working, but it stops receiving platform and security updates, which turns into a compliance and store-review risk over time. We keep existing Xamarin apps running and supported while we plan the migration, so nobody gets pushed into a rushed rebuild.
For most updates we ship through the standard store submission process for each platform, and we use Azure DevOps CI/CD pipelines to build, test, and release quickly. We plan updates carefully to keep your Xamarin app stable and compliant.
Still have questions about Xamarin? Let's talk.
Schedule an appointment with us today!
Start Your Project with a Xamarin App Development Company Today
Get a free consultation. We'll discuss your app idea, provide C#/.NET recommendations, and deliver a detailed proposal.
