Sidekick Interactive

The Leading Mobile App Development Agency in Canada

Servicing clients in the USA and Canada.

Why Sidekick Interactive?

• We Build With You, Not Just For You.
• 15+ years of mobile app expertise
• 50,000+ hours of mobile and web application development delivered
• Montreal-based and led team.
• We have 75%+ senior developers.
• Long-term collaborations across our client base, not one-off builds.
• Agile project management: on time, on budget.
• Secure, scalable, and maintainable code.
• Rigorous QA by our testers for flawless launches
• Transparent, pay-for-what-you-need billing

What we offer :

• Mobile app development: native mobile app (iOS & Android), hybrid mobile app, custom mobile app.
• Custom software development and web application : for startups, SMEs, entreprises
• Firmware-adjacent mobile engineering: built alongside your hardware team
• Backend and API Development: the APIs, integrations, and data layer your apps run on.
• Connected device apps: BLE pairing, reconnection, provisioning, offline-first sync
• Code rescue: abandoned codebases, AI-generated prototypes that stalled, departed vendors
• Code migration: Objective-C to Swift, Java to Kotlin
• Sidekick Maintenance: proactive maintenance, updates, and support
• Hire a Talent: hire vetted iOS, Android, React Native, and Flutter developers and embed them directly in your team.

Some Industries we know deeply:

• SaaS Apps
• EV Charging Apps
• GIS
• IoT
• Manufacturing Apps
• MedTech Apps
• Mental Health Apps
• Music Apps
• Aerospace
• Construction
• Orthotics and Prosthetics
• Startups

Our expertise includes:

• iOS: Swift, Objective-C, Core Bluetooth, External Accessory, ARKit
• Android: Kotlin, Java, Android BLE stack, foreground services
• Hybrid: React Native, Flutter, Kotlin Multiplatform 
• Hardware integration: Bluetooth Low Energy, provisioning, OTA firmware pipelines
• Backend and cloud: REST, GraphQL, MQTT, offline-first sync
• QA and release management by in-house testers
• 3D-Sidekick, our own proprietary 3D scanning product for O&P professionals

You wouldn’t call a plumber to fix your electrical panel. So why trust a marketing agency or a generalist web shop to develop your mobile app?