Top iOS App Development Companies in the United States

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Top Featured iOS App Development Companies

Sidekick Interactive
4.9
(6 reviews)
The Leading Mobile App Development Agency in Canada Servicing clients in the USA and Canada.
Highly recommended
Top awarded
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
Looking for work in iOS App Development
Located in Montreal, Canada
From €5,000 for iOS App Development
Worked in Energy & Oil (+9)
Speaks English, French
11-50 members

All iOS App Development Agencies in the United States

3 45

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