iPhone App Development Services

As a full-service app development agency, we design, build, and launch iOS applications that align with your business needs and connect with your target audience. Our development team blends app design, UX design, and technical expertise to craft feature-rich products that scale.

Whether you’re a startup validating a minimum viable product (MVP) or an enterprise ready to modernize, we leverage the latest frameworks (or build custom codebases) to help you create high-quality apps that feel native and ready for the App Store.

Choosing the right iOS app development company can make or break your product. Big Human offers more than just code. We deliver end-to-end iOS app development services that take your digital product from concept to launch.

Our development team has deep technical expertise in backend systems and a range of programming languages. We work to understand your project requirements, set clear timelines, and build a roadmap that fits your business goals. Think of us as an extension of your in-house team, looping you into the full development process every step of the way.

The result: high-performance iOS applications that balance usability, scalability, and beautiful app design.

Human-first iOS app development is about creating apps that people love to use. Going beyond polished visuals, iOS applications need to deliver an effortless user experience, real-time functionality, and measurable results for your business. 

As a full-service creative studio, our iOS app development services combine robust engineering with intuitive user interfaces and thoughtful UX design. Using native programming languages like Swift and frameworks like React Native, our developers turn wireframes and prototypes into scalable iOS applications that feel at home across iPhone, iPad, Apple Watch, and Apple TV.  

Following an agile, iterative development process, we build every app with usability, performance, and impact in mind. We focus on ensuring your iOS application meets and evolves alongside your target audience and business needs, keeping your app performing at its best even post-launch.

Chelsea Piers Fitness came to Big Human with a familiar challenge: their existing app wasn’t keeping up with member expectations. The experience felt clunky, class bookings were unreliable, and the design didn’t reflect the brand’s premium in-person experience. Members wanted easier ways to book classes, manage memberships, and stay connected across devices.

Big Human reimagined the app from the ground up. Our design team created a cleaner, more intuitive interface, while our developers overhauled the backend to deliver speed, stability, and scalability. The result was a unified experience across the Apple ecosystem that feels as dynamic as the gym itself.

With a modern tech stack and integrated APIs, the new app supports ongoing updates and personalization. Features like tailored home screens, real-time booking, and in-app notifications help members interact with the brand on their own terms.

Impact was immediate: the App Store rating jumped from 2.4 to 4.8 right after launch.

“Big Human was an outstanding partner in creating Chelsea Piers Fitness’ first custom mobile app. They took the time to understand the needs of our diverse group of stakeholders, worked seamlessly with our marketing team to evolve our brand for mobile, and worked hand-in-hand with our internal development team to ensure we could maintain and build on the product moving forward."

Adam Koogler - Chief Growth & Technology Officer, Chelsea Piers

"The agency executed the architecture, database structure, and algorithm exceptionally well, ensuring that the final product met RoomZoom's expectations."

Elien Blue Becque, Founder at RoomZoom