We build native and cross-platform mobile apps that users love and businesses rely on. From consumer-facing products to enterprise solutions, we create mobile experiences that drive engagement, retention, and revenue.
Mobile app development is the design, construction, and maintenance of applications that run on iOS and Android — either natively with Swift and Kotlin, or from a single cross-platform codebase with React Native and Expo. TechGuys is a Montreal-based software agency that builds custom mobile apps for Canadian businesses, covering the full cycle: product strategy, UX design, development, App Store and Google Play releases, and post-launch maintenance.
We speak from shipped work, not theory: we built Stronger Together, a fitness coaching app combining video training, nutrition tracking, and AI-computed recipe macros, and the Bibliothèque de Laval's swipe-based activity discovery experience deployed across web and on-site kiosks. Custom projects typically start around CAD $10,000 and follow a structured process — discovery, design, development, QA, launch — with regular demos at every stage.
Keep reading: How Much Does Mobile App Development Cost in 2026? · iOS, Android, or Cross-Platform: How to Choose for Your App Project?
In a mobile-first world, your customers expect native experiences. Mobile apps offer engagement opportunities that web simply can't match: push notifications, offline access, device features, and a direct channel to your users. We build apps that keep users coming back.
Our proven approach ensures your mobile app launches successfully and delivers real business value from day one.
Native or cross-platform? We ask about your timeline, budget, and user behavior first. Your business context drives our technical recommendations.
Every interaction optimized for touch, gestures, and the mobile context. We design experiences users can navigate with one hand.
AI-assisted coding means faster iterations. We build your core features quickly and leave time for polish and optimization.
We build with proven, modern technologies that ensure your mobile app is fast, reliable, and delivers a native experience on every device.
React Native & Expo for cross-platform efficiency
Swift & Kotlin for native iOS and Android performance
Expo EAS for streamlined builds and over-the-air updates
Node.js & Supabase for scalable backend infrastructure
OpenAI & Anthropic for intelligent app features
Push notifications, offline sync, and device APIs
From fitness platforms to business tools, we've built mobile experiences that drive engagement and deliver results.
Stronger Together is a fitness platform for women that combines video training, gym programs, journaling, and nutrition tracking in one place. The web and mobile apps empower users to reach their health goals with an easy-to-use interface, a comprehensive recipe library, and AI-powered macro calculations—all within a supportive community focused on women's wellness.
APFF (Association de planification fiscale et financière) developed a comprehensive event platform for their annual congress. Available as both a website and progressive mobile app, the platform allows participants to easily access programs, documents, speakers and real-time polls, with exclusive features for the mobile application.
Custom mobile app projects at TechGuys typically start around CAD $10,000. The final budget depends on scope, feature complexity, and third-party integrations — we provide a detailed estimate after a free discovery call, before any commitment.
It depends on your timeline, budget, and how deeply the app must integrate with the device. For most business cases, React Native with Expo delivers iOS and Android from one codebase at a lower cost. We recommend native Swift or Kotlin when you need maximum performance or deep hardware integration — and we tell you which one fits before writing any code.
A typical MVP takes 8 to 16 weeks at TechGuys, covering discovery, design, development, QA, and store submission. After launch, over-the-air updates through Expo EAS let us ship improvements without waiting for app store review.
Yes. TechGuys manages the entire release process: developer accounts, review guideline compliance, store listings, and version rollouts on both the App Store and Google Play.
Yes. We integrate models from OpenAI, Anthropic, and Google into mobile apps — for example, Stronger Together uses AI to compute recipe macros automatically. We design AI features around measurable value, not novelty.
We offer maintenance plans, monitoring, and ongoing development retainers. Most clients keep working with us after launch to iterate on user feedback, ship new features, and keep dependencies up to date.
Let's discuss your app idea and explore how we can bring it to life on iOS and Android.
