Mobile App Development Agency
We design and develop custom mobile applications for startups, SMEs, and enterprises.
Trusted by market leaders throughout North America
Experience you can rely on
Our Montreal-based team builds iOS and Android apps that drive growth, engage users, and scale reliably with clear timelines, controlled budgets, and a strong focus on long-term product success.
Mobile App Development Experts
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?
Focused Mobile Development
At Sidekick Interactive, mobile apps are all we do. This focus allows us to understand every nuance of mobile development, anticipate challenges before they arise, and deliver solutions that work beautifully from day one.
Technical, Design & Product Expertise
Our team in Montreal blends technical expertise, design sensibility, and product thinking. We build apps for iOS & Android, web platforms, and enterprise solutions.
Reliable Delivery
Whether it’s a consumer-facing app, an enterprise workflow, or a research-focused platform, we bring clarity, strategy, and execution excellence. Every project is delivered on time, on budget, and tailored to your existing systems and project goals.
Our Custom Mobile App Development Services
Mobile App Development
We design and develop native and cross-platform mobile apps tailored to your business needs. From concept to launch, each app is built to perform well, engage users, and grow your business, while fitting your existing systems and project goals.
Web App Development
Our team also develops responsive web apps that complement your mobile solution, providing seamless experiences across devices.
UX/UI Design App Development
Our user-centered design process ensures apps are intuitive, visually appealing, and easy to use. Interfaces guide users naturally and reflect your brand identity, improving adoption and retention.
Custom Workflow App
We create tailored solutions to automate business processes, streamline operations, and improve team productivity, all through mobile technology.
Backend & API Development
We build secure, reliable backends and integrate APIs to connect your app with internal systems or third-party services, ensuring smooth data flow and functionality.
Sidekick Maintenance
From updates to bug fixes and performance optimization, we provide ongoing support to keep your mobile app reliable and future-ready.
Choosing the right partner matters
Why choose Sidekick Interactive
“Our strength lies in focus. We know apps inside and out. The small details that make an app great, we catch them. The ones that could make it buggy or late, we avoid them.”
Gregory Cerallo, Co-Founder
A Partnership Mindset
Help clarify your product
Challenge assumptions when needed
Anticipate technical and operational risks
Optimize budgets and timelines
Technologies & Expertise
We choose platforms and development tools based on the realities of each project and the technology already in place. Whether we’re building something new or improving an existing app, our goal is to use what makes the most sense for your product and your team.
Mobile & Cross-Platform Development
React Native
Flutter
iOS
Android
Advanced Technologies
AR/VR
3D Scanning
EV charging systems
Smart home systems
Bluetooth & mesh
Portfolio: Mobile Apps We’ve Built
We have delivered a wide range of digital products, including: mobile applications for end users, secure research platforms, custom enterprise tools and data-driven web applications. Each project is designed to meet specific business, technical and user constraints with a strong focus on long-term sustainability.
HP: Complex Mobile App Development
A custom 3D foot orthotics app for iPad. It transforms manual measurement into a precise, seamless workflow, saving time and improving accuracy for clinicians.
FLO: Developed Canada’s Largest EV Network Mobile App
A smart EV charging app that integrates home energy management, public charging networks, and analytics for a smooth user experience.
TouchTunes: Top 10 Music App Architecture and Development
A smart EV charging app that integrates home energy management, public charging networks, and analytics for a smooth user experience.
Sidekick for Researchers Empowering Innovation Through Mobile Apps
Since 2017, Sidekick Interactive is also a recognized technology partner for academic, medical and applied research projects. We support researchers by developing:
Custom research software and mobile apps
Secure data collection and analysis tools
Grant-aligned technical roadmaps
Scalable research platforms
Our experience with universities and research centers allows us to adapt to ethical, funding and compliance constraints specific to research environments.
What Clients Say About Us
“Sidekick’s team is great at UI/UX design… They go outside the box, follow Agil, and became part of our team, not just a provider.”
HP, Palo Alto, California
“Sidekick’s experts guided our digital strategy… The co-creation workshop helped all stakeholders collaborate and push the project further.”
Transdev, Paris
“Sidekick’s team understood our needs and became trusted partners in our technological development.”
Skeltec, Quebec’s largest chain of O&P clinics
Insights & Articles from Sidekick Interactive
Top 6 EV Charging Mobile App Developers
Top Mobile App Development Companies in Toronto Canada 2026
Top Mobile App Development Companies in Canada 2026
Frequently Asked Questions
What is your app development process?
Project timelines vary depending on complexity. We use phased planning, MVP strategies, and iterative sprints to set realistic expectations and ensure timely delivery.
How long does development take?
Project timelines vary depending on complexity. We use phased planning, MVP strategies, and iterative sprints to set realistic expectations and ensure timely delivery.
How is the cost estimated?
Cost depends on platforms, features, integrations, and technical complexity. During the project definition phase, we refine the budget based on functionality and development requirements.
How do we stay informed during the process?
Through regular touchpoints, agile reporting, and transparent communication, we keep clients informed about every milestone and decision.
What industries do you serve?
Healthcare, enterprise workflow apps, IoT, MedTech, EV charging, connected devices, and general B2B/B2C mobile applications.
Why do enterprise companies choose to work with Sidekick Interactive?
Enterprise clients rely on our technical reliability, secure architecture, and scalable native mobile apps. We integrate seamlessly with existing systems and ensure compliance with strict IT and data governance standards.
Why do SME companies choose to work with Sidekick Interactive?
SMEs benefit from our strategic guidance combined with technical expertise, transforming operations and customer experiences while delivering measurable ROI through mobile solutions.
Why do startups choose to work with Sidekick Interactive?
Startups choose us because we think like entrepreneurs. We help them turn ideas into functional, market-ready apps, focusing on MVP strategy, product-market fit, and scalable growth.
