Mobile App Development Services in Toronto
We design and build fast, beautiful iOS & Android apps for startups and enterprises across Toronto and the GTA — native and cross-platform apps that users love and that scale with your business.
Custom mobile apps built to scale
SDO is a Toronto-based app studio building custom iOS and Android apps for startups, small businesses, and enterprises across Ontario and the GTA.
Whether you need a native app, a cross-platform build with Flutter or React Native, or a fast MVP, we design and engineer apps that are smooth, secure, and ready for the App Store and Google Play.
Reach iOS and Android from a single codebase - faster to launch, easier to maintain, lower cost.
Native Performance
Smooth, fast, 60fps experiencesMVP to Enterprise
Start lean, scale confidentlyEnd-to-end app development services
From a first MVP to a full-scale platform, our Toronto team handles the entire app lifecycle.
iOS App Development
Native iPhone and iPad apps built in Swift - polished, secure, and App Store ready.
Android App Development
Native Android apps in Kotlin, optimized for every device and ready for Google Play.
Cross-Platform Apps
Flutter and React Native apps - one codebase for both iOS and Android, launched faster.
MVP Development
Validate your idea fast with a lean, investor-ready first version - then scale what works.
App UI/UX Design
Intuitive, delightful interfaces designed to keep users engaged and coming back.
Backend & API Integration
Scalable servers, secure APIs, and third-party integrations that power your app behind the scenes.
Have an app idea? Let's turn it into something real.
Get a Free QuotePlatforms we build for
Native or cross-platform, we pick the right technology for your goals, budget, and timeline.
iOS
Native iPhone & iPad apps with a polished, Apple-quality feel.
Android
Native Android apps optimized for every device and screen size.
Flutter
Beautiful cross-platform apps for both stores from one codebase.
React Native
Fast, flexible cross-platform apps with a shared codebase.
Why founders & teams choose us
A Toronto app team that ships polished apps on time - and sticks around long after launch to help you grow.
Native-Quality Performance
Smooth, fast, 60fps apps that feel great to use - whether native or cross-platform.
Toronto-Based Team
Local developers in your time zone - clear communication and real accountability.
You Own the Code
Full ownership of your app's source code and IP - no lock-in, no per-user fees.
Cross-Platform Expertise
Ship to iOS and Android from one codebase - faster launch, lower cost, less maintenance.
App Store Launch Support
We handle App Store and Google Play submissions - guidelines, assets, and approval.
Post-Launch Support
Ongoing updates, bug fixes, and new features to keep your app fast and current.
Our app development process
A clear, agile process that takes your app from idea to the App Store - and keeps it growing.
Discovery & Strategy
We define your goals, users, and features, then plan the right platform and roadmap.
UX/UI Design
Wireframes and interactive prototypes so you experience the app before we build it.
Development
Agile sprints with weekly builds you can test on real devices - clean, scalable code.
QA & Testing
Thorough testing across devices and OS versions to catch bugs before your users do.
App Store Launch
We handle App Store and Google Play submission, assets, and approval end to end.
Support & Scale
Post-launch updates, monitoring, and new features as your user base grows.
Got an app idea? Book a free discovery call and get a clear plan and quote.
Book a Free CallApps we build
From on-demand startups to enterprise tools, we build apps for every industry across Toronto and the GTA.
On-Demand & Delivery
Ride, food & courier apps with live tracking.
Fintech & Payments
Secure wallets, banking & payment apps.
Healthcare & Fitness
Telehealth, wellness & workout tracking.
eCommerce & Retail
Shopping apps built to sell & scale.
Booking & Scheduling
Appointments, reservations & events.
Social & Community
Feeds, chat & community platforms.
Logistics & Fleet
Dispatch, tracking & fleet management.
EdTech & Learning
Courses, quizzes & learning platforms.
How much does an app cost?
Fixed-scope quotes with no hidden fees. Pick a starting point - we'll tailor the final quote to your app.
Validate your idea, fast.
- Cross-platform (Flutter/React Native)
- Core features & clean UI/UX
- Basic backend & API
- App Store & Play submission
- Launch in ~8-12 weeks
A full-featured app for both stores.
- iOS + Android (native or cross-platform)
- Fully custom UI/UX design
- Scalable backend & integrations
- Admin dashboard & analytics
- 30-day post-launch support
Complex, large-scale apps.
- Multi-role, complex apps
- Advanced integrations & security
- Real-time features & scaling
- Dedicated development team
- Priority SLA support
App development questions, answered
Everything you need to know before building your mobile app in Toronto.
How much does it cost to build an app in Toronto?
Mobile app development in Toronto typically starts around $15,000 for an MVP and ranges to $100,000+ for complex, enterprise-grade apps, depending on features, platforms, and integrations. Our packages start at $15,000 - contact us for a fixed-scope quote.
How long does it take to develop a mobile app?
A focused MVP usually takes 2 to 3 months, while full-featured apps take 4 to 8 months. We work in agile sprints, so you test working builds early and can launch a core version sooner.
Should I build a native or cross-platform app?
It depends on your goals. Native (Swift/Kotlin) offers maximum performance for demanding apps, while cross-platform (Flutter/React Native) reaches both stores from one codebase, faster and at lower cost. We'll recommend the best fit for your project in a free consultation.
Do you build for both iOS and Android?
Yes. We build native apps for iOS and Android, and cross-platform apps that run on both from a single codebase - so you can reach every user, whatever device they're on.
Do you build an MVP first?
Absolutely - and we often recommend it. An MVP lets you launch a lean, focused version to validate your idea with real users (and investors) before investing in the full build. Then we scale what works.
Will you publish my app to the App Store and Google Play?
Yes. We handle the full App Store and Google Play submission process - store listings, assets, guidelines, and approval - so your launch is smooth and stress-free.
Do I own my app's source code?
100%. You own your app's full source code and intellectual property outright - no vendor lock-in and no per-user fees. It's completely yours.
Do you provide support and updates after launch?
Yes. Every project includes post-launch support, and we offer ongoing maintenance plans for updates, OS compatibility, bug fixes, and new features - so your app stays fast and current as it grows.
Can you take over or fix an existing app?
Yes. We regularly take over existing apps to fix bugs, improve performance, add features, or rebuild them properly. Share your app and we'll audit it and recommend the best path forward.
Still have questions? Get straight answers from our Toronto app team - no sales pressure.
Ask Us AnythingReady to build your app?
Tell us about your app idea. You'll get a free consultation, honest advice on platform and scope, and a transparent quote from a Toronto app team that ships.
Pay easily from any Canadian bank
We accept secure payments from all major Canadian banks and cards - Interac e-Transfer, wire, or card. Local invoicing, GST/HST included.
SDO Custom Softwares is a leading custom software development company in toronto, offering expert custom software development, web development, mobile app development, and e-commerce development services across Ontario.
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