Professional Mobile App Development Services: Build, Launch, and Scale Your App Success
Get the best of both worlds with mobile development that blends innovation and functionality from custom app design to performance optimization and seamless integrations. Building, launching, and scaling your mobile app has never been easier. Get your free mobile development quote today!

"Rectangle brought our idea to life with a powerful mobile app. The performance, design, and usability have all exceeded expectations."
Samuel Uche Akuma
CEO, Lyne
13+
Successful Mobile Apps Devloped
18 weeks
Duration of the development process
93%
Client satisfaction Score
Tailored Mobile App Development Packages Built Around Your Business Needs
Many agencies take a one-size-fits-all approach to mobile development, but not us. At Rectangle, we design and build personalized, data-driven mobile applications tailored to your business, industry, and goals. From concept and coding to testing, launch, and optimization, everything is crafted to scale your app’s success and maximize ROI.
Mobile Development Services Starting at
$4000
Proven expertise from building and launching 13+ successful mobile applications, focused on boosting user engagement, driving growth, and maximizing revenue through powerful, high-performing mobile experiences.
Mobile Development Needs
Mobile development is more than just building an app it’s about strategy, user experience, and creating functionality that converts users into loyal customers. During your project setup, we’ll identify the right platform (iOS, Android, or cross-platform), core features, and design elements to match your brand and business goals.
Campaign Timeline
Every mobile development project is unique. Timelines can range from a few weeks to several months, depending on your app’s complexity and goals. The more flexibility and collaboration your team provides, the more impactful, customized, and scalable your app will be helping you achieve long-term growth.
Digital Strategy Integration
As a full-service agency, we don’t just build apps we integrate them into your overall digital ecosystem. From API integrations and e-commerce platforms to CRM systems, SEO, and email marketing, our expert team ensures your mobile app isn’t just functional, but a growth engine that drives measurable results and consistent revenue for your business.
Included in All Mobile Development Projects
- Professionally crafted, custom mobile applications designed to match your brand, vision, and user needs
- Seamless user experiences and interfaces built to enhance customer satisfaction and boost engagement
- End-to-end tracking and analytics for users, downloads, conversions, and revenue to measure real business growth
- High-performing, scalable app architecture tested for performance and reliability
- Optimized design and functionality for maximum usability across iOS, Android, and cross-platform devices
- Built-in features and integrations tailored to your business goals (e-commerce, push notifications, chat, payments, and more)
- Fully optimized mobile applications for smartphones, tablets, and wearables
- Access to advanced growth tools and in-depth analytics to track user behavior, optimize performance, and scale your mobile app’s success.
- Custom app features and interfaces designed to engage users, improve retention, and drive conversions.
- Access to advanced growth tools and in-depth analytics to track user behavior, optimize performance, and scale your mobile app’s success.
Our Mobile Development Services
Custom Mobile App Development
At Rectangle, we don’t just develop apps, we craft digital solutions tailored to your business. Our custom mobile app development services are built on innovation, functionality, and seamless performance. Rectangle app development isn’t just coding; it’s a complete toolkit designed to turn your ideas into powerful mobile experiences. With our expertise, your app becomes more than a product it becomes a growth engine for your business.
Cross-Platform App Development
At Rectangle, we don’t just build apps for one platform, we create experiences that thrive everywhere. Our cross-platform mobile development services are designed to give your business maximum reach, consistent performance, and cost efficiency. Rectangle cross-platform solutions are not just builds; they’re powerful tools for scalability and growth. With our expertise, your app works seamlessly across iOS, Android, and beyond delivering results at every touchpoint.
UI/UX Design for Mobile Apps
At Rectangle, we don’t just design interfaces, we design experiences that captivate. Our UI/UX design services are built on creativity, usability, and user psychology. Rectangle app designs aren’t just visuals; they’re strategic experiences crafted to engage, retain, and convert. With our expertise, your app becomes intuitive, elegant, and memorable, ensuring every user interaction drives real results.
Mobile App Maintenance & Support
At Rectangle, we don’t just launch apps, we keep them thriving. Our mobile app maintenance and support services are designed to ensure your app is always updated, optimized, and secure. Rectangle support is not just a service; it’s a commitment to long-term success. With our expertise, your mobile app remains reliable, competitive, and ready to scale as your business grows.
Enterprise Mobile Solutions
At Rectangle, we don’t just build apps, we build enterprise-grade solutions that empower businesses. Our enterprise mobile app services are designed to streamline workflows, boost productivity, and enhance customer experiences. Rectangle enterprise solutions aren’t just software; they’re strategic tools for business transformation. With our expertise, your mobile solutions integrate seamlessly into your operations driving measurable impact and sustainable growth.
Mobile App Testing & Quality Assurance
At Rectangle, we don’t just test apps, we perfect them. Our mobile app testing and QA services are designed to ensure flawless functionality, performance, and security across every device. Rectangle’s testing is not just a step; it’s a guarantee of excellence. With our expertise, your app delivers a seamless, reliable experience that keeps users engaged and your brand trusted.
Completely Custom Mobile Development
Completely Custom Solutions
At Rectangle, we understand that every business is unique. Our team of expert developers works closely with you to create tailored mobile solutions that align with your goals and audience, ensuring your app stands out in a crowded digital marketplace.
Proven Results
We don’t just build mobile apps; we deliver measurable business impact. With our performance-driven approach, you can expect increased user engagement, stronger customer retention, and higher revenue backed by detailed analytics to track success at every stage.
Seamless Project Management
Enjoy a smooth development journey with our dedicated project managers who prioritize your needs. Acting as your main point of contact, they provide clear updates, transparent communication, and timely delivery throughout the entire mobile development process.
Exceptional Customer Support
At Rectangle, client satisfaction is our top priority. Our friendly and knowledgeable support team is always available, whether you have questions during development or need ongoing updates and maintenance after launch.
Innovative Development
Stay ahead of the competition with our forward-thinking mobile solutions. We leverage the latest technologies and frameworks to build apps that are not only functional but also intuitive, user-friendly, and scalable for long-term growth.
Comprehensive Digital Integration
Rectangle offers more than just mobile development. We provide complete digital integration, including APIs, cloud solutions, analytics, and marketing tools, ensuring your mobile app seamlessly connects with your entire business ecosystem.
Our Mobile Development Clients
FAQs about Mobile Development Services
What types of mobile apps do you develop?
At Rectangle, we build custom mobile applications for iOS, Android, and cross-platform solutions. Whether you need a native app, hybrid app, or progressive web app (PWA), our team tailors the development to your business needs.
How long does it take to develop a mobile app?
Timelines vary depending on complexity and features. A simple app can take 10 –18 weeks, while more advanced solutions may take several months. We provide clear project timelines upfront and ensure consistent communication throughout.
Do you provide post-launch support and updates?
Yes! Our services don’t stop at launch. We offer ongoing support, updates, and maintenance to ensure your app remains secure, up-to-date, and optimized for user satisfaction and growth.
Can you integrate my mobile app with existing systems?
Absolutely. We specialize in seamless integration with CRMs, ERPs, payment gateways, APIs, and other digital platforms—making sure your mobile app fits perfectly into your existing business ecosystem.
How much does mobile app development cost?
Pricing depends on the complexity, features, and platforms you choose. At Rectangle, we offer transparent, tailored pricing so you only pay for the features and functionality that truly benefit your business.