Visit Us.

OpenSource Technologies Inc.
650 N Cannon Ave #229
Lansdale, PA 19446

Connect With Us

+1 (833) 678-2402

+1 (267) 903-6292

Reach Us

info@ost.agency

Custom App Development

Our engineers can help you create a robust mobile solution from the ground up using next-generation technologies and industry-best tools—or transform your existing app into the high-performing product you’ve always envisioned. As a trusted Custom App Development Company, we specialize in delivering scalable, feature-rich, and intuitive applications tailored to your unique business goals.

With OpenSource Technologies, you benefit from affordable and efficient development timelines, along with flexible, industry-standard features and seamless third-party integrations. As a full-service custom mobile app development agency, we prioritize both usability and data security, ensuring your app is not only powerful but also reliable and secure.

We offer comprehensive, end-to-end mobile development services, including:

Project Assessment —> UI/UX Design –> App Development –>. Quality Assurance & Testing –> Deployment —>. Ongoing Support & Maintenance

Our Expertise

Android App Development

We have experienced Android app developers that use state-of-the-art Android mobile development suites to build robust applications that are reliable, scalable, and user-focused. Our Android applications are built with the end-user in mind, featuring customizable features, futuristic integrations, and immutable security frameworks. We do not stop at developing feature-rich, high-quality products, we take a step further to ensure great user-friendliness and user experience. Hire Android App developers from us and work with a leading custom Android app development company to build an app that will stand out from the norm and foster massive business growth. With our comprehensive Android app development services, we strive to empower businesses with innovative solutions customized to their needs, ensuring seamless integration and unparalleled performance.

iOS App Development

Our professional iOS mobile app developers are known for building industry-leading iOS applications for iPhone and iPad. We use contemporary technologies, like Ionic, React Native, Flutter, PhoneGap, and Xcode to build fast, scalable, and customizable applications – at affordable costs. No matter what your business requirements are, we have got the experience and resources to create a product that ‘speaks’ innovation and resonates with your business model. Our Custom iOS App Development Services are designed to meet the demands of the competitive iOS app development market. We have iPhone and iPad development experts and a user-first culture to ensure your app meets every regulatory requirement and provides an excellent user experience. This is to help you attract millions of users.

Cross-Platform/Hybrid Mobile Application Development

As a leading hybrid / cross platform mobile app development company, we use frameworks like Ionic and React Native to build native-like, cross platform/hybrid mobile applications. To reach a wider customer base, building an application that runs on more than one operating system is the way to go. Thanks to some cutting-edge technologies that make building a cross platform/hybrid solution with a native feel and performance possible. Cut down on costs without losing native performance and experience with the help of our first-rate hybrid mobile app development service.

Internet of Things (IoT) Solutions

We specialize in developing scalable applications that seamlessly connect with IoT devices across diverse platforms. These apps enable real-time data collection, remote monitoring, and control of connected devices. Our IoT solutions are tailored for industries such as healthcare (for patient monitoring and smart diagnostics), manufacturing (for predictive maintenance and automation), and smart homes (for energy management, security, and device interoperability). We also ensure robust data security and analytics capabilities to transform raw device data into actionable insights.

AI-Enhanced Applications

We integrate artificial intelligence and machine learning into custom applications to drive smarter decision-making and enhance user experience. Our AI-driven apps feature personalized recommendations, intelligent automation, chatbots, and predictive analytics, helping businesses increase efficiency and user engagement. Whether it’s automating customer support, optimizing logistics, or analyzing behavioral data, our AI integrations are designed to deliver measurable results across various domains.

Progressive Web App (PWA) Development

Our team builds Progressive Web Apps (PWAs) that deliver native app-like performance within a browser. These apps offer benefits like offline access, push notifications, fast loading speeds, and responsive design, making them ideal for reaching users across devices without requiring separate native app development. PWAs are especially effective for eCommerce, news platforms, service portals, and education apps, ensuring seamless engagement and higher conversion rates.

Augmented Reality (AR) and Virtual Reality (VR) Applications

We design and develop immersive AR/VR applications tailored for industries like education, real estate, retail, eCommerce, and training. From interactive learning modules and virtual property tours to 3D product previews and gamified experiences, our solutions enhance customer engagement and brand value. By combining rich visuals with real-time interaction, we help businesses create next-generation experiences that stand out in competitive markets.

AI-Enhanced Mobile App Development

Leverage AI-powered mobile applications to create smarter, more responsive, and feature-rich experiences. Our AI-driven mobile app development solutions integrate predictive planning, intelligent automation, and NLP-powered communication tools to enhance collaboration, resource management, and efficiency.

Key AI Features for Mobile Apps

Smart Resource Allocation & Automated Task Management in Mobile Apps

At OST, we integrate...

AI-Based Predictive Analysis for Enhanced Decision-Making in Mobile Apps

Our AI-driven predictive analytics solutions

NLP-Powered Virtual Assistants & Automated Customer Support in Mobile Apps

AI-driven virtual assistants and chatbots

AI-Driven Fraud Detection & Security Monitoring in Mobile Apps

Security is critical for mobile applications, and our...

Integrate AI Into Your Mobile App Development with OST

AI is transforming mobile apps into intelligent,...

AI-Driven AR/VR Mobile Solutions

We bring the power of Artificial Intelligence (AI) and...

AI-Powered Mobile App Connectivity with Machines & IoT Devices

At OST, we develop...

Get In Touch With Us

Capabilities

We provide an all-in-one mobile app development service. We are equipped with everything you need at every stage of the application development lifecycle, from next-generation tools & technologies, app design to maintenance and marketing.

Mobile Strategy

First, we consider your business goals and needs in relation to current market demands. With these needs in mind, we map...

App Development

Our mobile application development services include app development on Android, iOS, Windows and across platforms. We...

Internet of Things (IoT)

Using IoT, we can enable machine connectivity with your mobile app, increasing flexibility, lowering costs, and reducing...

Quality Control

We conduct functional, usability, performance, and integration testing to ensure outstanding mobile app performance. As...

Maintenance & Support

We work with you to maintain and enhance your app in a fast-changing industry. Using our defined maintenance packages,...

Digital Marketing

Even a well-developed app needs promotion to reach a wide audience. Using our digital marketing techniques such as...

Industries We Serve

Adaptable Softwere Solutions for a Broad Spectrum of Industries

Why Choose Us

Source Code Ownerships

We have a simple policy when it comes to source code ownership – we build the product, you own it. After delivering your product, we also hand over the source code for free and with no conditions attached. You will enjoy the flexibility to continue working with us for maintenance and support or move on as you please.

No Third Parties

OST is a website development agency where there is zero dependence on third parties. We have got all the human resources and technologies required to deliver your project in-house. Having best-of-breed experts across every area of web development enables us to maintain high-quality and on-time delivery.

Local & Accountable

We build trust and ensure accountability through in-person interactions and face-to-face problem-solving. We are more than a name on your computer screen. You can meet our team of first-rate experts when you visit one of our offices. Having a physical address where you can discuss and monitor your project enables you to hold us accountable.

Transparency

Transparency is one of the major principles of our culture. We do not just want to build a great product for you, we also want to earn and keep your trust. You are not left in the dark concerning any aspect of your project. We are transparent with all our processes, project status, budget, challenges, risks, and timelines. We keep you updated while on the course to meet your goals.

Showreel

How OST Can Help You

Have you had to evolve your online, mobile, or e-commerce strategies, but found your developer nowhere to be found, or at least not in the timely fashion you require? Has your development partner not responded to you quickly enough in the changing world of online security? Have you lost the maintenance and support required to advance your digital strategy? Well, we hear you. Instead of giving you one solution and disappearing, the OST team steps in repeatedly to solve complex business challenges to get our clients where they want to be. Our customers stick with us because we stick with them. Our customers work with us because our experience in adaptive process influences business decisions so sustainably they never even think of finding another provider. How do you have to evolve? How do you want to adapt? And what problems can we help you solve? Contact us, sales@ost.agency. Visit clutch.co and search for open source technologies to read testimonials.

How We Drive You

Clients come to Opensource technologies with visions of creating effective web and mobile applications that solve business problems. Our teams nurture these visions into real and tangible products often bringing greater value to the application as a whole. Getting started we ask poignant questions critical to understanding how we all succeed. Sometimes these are hard questions to answer but collaboration is key to start. OST follows a proven and effective three-stage development process and we won’t ever deviate from it. The whole reason we maintain a 100% success rate in delivering applications is because we follow these stages in order. Stage 1 of the app life cycle begins with a wireframe mock-up design. This is the planning period for creating the best user interface in a very iterative process. We’ll map out the sitemap and navigational details specifically, how content and data will interact with users. This is the most important phase and provides everyone a clear picture before graphic design and development begin. Stage 2 is where graphics and content are placed over the wireframe to provide the most visually appealing user interface. The OST design team will provide multiple iterations so the look is exactly what you want or better yet what the user wants. In stage 3 development begins, OST will advise the right programming language and back-end database to meet the desired goals. We employ an agile development process so clients have regular knowledge of work in progress, a hosting and server. Migration plan will also be provided to ensure a smooth transition for users of the application but before we launch and go live extensive testing and validation is performed on all internet browsers and ios and android devices. But hey after that the application is all yours however that is not where the benefits of working with OST ends. Other value-added services can be layered on top making us the total package provider. We offer complementary bug support for 30 days. Some applications though require a quick response time and regular updates, in these cases OST offers monthly maintenance and support plans built to suit the application’s needs. OST’s digital marketing teams also help applications get found. Our Bing and Google certified experts are proficient in search engine optimization or seo and pay-per-click. We will craft a plan that suits your business needs and marketing budget. When partnering with OST our experienced team of advisors and technologists will help you plan for the present and future. Every application we’ve delivered follows a tried and true process and all were delivered on time and on budget. You can count on us to build a sound foundation a platform you can truly stand on when you want to go higher.

How We Fuel You

Every business has been forced to evolve and do so quickly and Opensource technologies has fueled the drive and ambition of business owners to adapt and overcome that means redesigning and enhancing web applications and e-commerce systems. It’s meant building mobile applications to communicate and drive brand loyalty with customers and prospects. It’s meant being the technical advisors for entrepreneurs who want to build the app of their dreams with someone they can trust. We speak your language, we build the roadmap, we simplify processes, we recognize ROI and how can we fuel you.

Frequently Asked Questions

What Mobile App development services are offered by OpenSource Technologies?

At OpenSource Technologies, we offer comprehensive Custom App Development solutions tailored to your business needs. As a trusted Custom Mobile App Development Agency, we specialize in building both native and cross-platform applications. Whether you need a high-performing iOS app, a scalable Android solution, or a single app that works across platforms, our team has the expertise to deliver.

We provide end-to-end services including ideation, UI/UX design, development, testing, deployment, and post-launch support. From being a Custom iOS/Android App Development Company to delivering robust Cross Platform Mobile App Development Company services, we ensure that your application is intuitive, secure, and fully aligned with your goals.

What is the best way to communicate with your expert consultant or team?

Email. Phone Call. Screen Share. Or even meet in person. Let’s schedule a time to talk. We’ve been there and done that, we just have to know you and your idea.

Who owns the legal rights to the code developed by OpenSource Technologies?

All code developed by OST is the property of our customer after the final payment is made on the last deliverable. End of story.

How do you ensure that your Intellectual Property (IP) is protected?

At OpenSource Technologies (OST) we take the protection of your Intellectual Property (IP) very seriously. To begin with, we sign a Mutual Non-Disclosure Agreement (NDA) to ensure that all your ideas, business information, and project details remain confidential. This agreement provides a legal framework that prevents any misuse or unauthorized sharing of your IP. Throughout the development process, all documentation, code, and assets remain your property, and you retain full ownership once the project is completed and final payment is made.

Will you sign an NDA?

Yes, we can provide you an NDA of our own or review and sign yours.

How Would I protect my App Idea ?

Protecting your app idea is an important first step in the App Development process. While the idea itself may not be legally protected, working with a trustworthy development partner can make all the difference. At OpenSource Technologies, we begin every Custom App Development project by signing a Mutual Non-Disclosure Agreement (NDA) to safeguard your concept. We also ensure all project documentation and source code are clearly attributed to you, giving you full ownership and control over your app from start to finish.

Why should I choose OpenSource Technologies over other mobile app development companies?

At OpenSource Technologies, we pride ourselves on being a Custom Mobile App Development Agency that values transparency, collaboration, and client success. From the very beginning, we maintain clear and open communication about your project’s scope, budget, timelines, and goals. Every phase of the custom app development process—from ideation and design to deployment and support—is handled with a focus on quality and accountability.

What truly sets us apart is our client-first approach. We don’t just build apps—we work with you to ensure that every decision made aligns with your business vision and delivers measurable results. Our team offers expert guidance, scalable solutions, and full ownership of your project, so you’re always in control.

How much do cross platform mobile app development services cost near me?

The cost of hiring a Cross Platform Mobile App Development Company depends on various factors such as the complexity of your app, feature requirements, platform choices, and development timelines. Typically, prices can range from a few thousand to tens of thousands of dollars.

At OpenSource Technologies, we believe in complete transparency. Clients can track the progress of their custom app development at any stage of the project. We provide clear communication, milestone-based updates, and full access throughout the process. Most importantly, we give 100% code ownership to our clients upon project completion—ensuring you have total control over your product now and in the future.

What are custom iOS app development services?

Custom iOS App Development Services include the complete app development lifecycle—from ideation and design to development, testing, and deployment on the Apple App Store. These services are tailored to meet specific business requirements, brand identity, and user expectations. At OpenSource Technologies, a leading Custom Mobile App Development Agency, we use modern technologies like Swift and Objective-C to build high-performance iOS apps that are scalable, secure, and user-friendly.

Our services cover UI/UX design, native or hybrid app development, API integration, multi-device testing, and full support with App Store submission. We ensure every custom iOS app aligns with your business goals and delivers a seamless user experience.

What are Android app development services?

Android App Development Services involve designing, building, and maintaining powerful mobile applications specifically for the Android platform. As a top Custom Android App Development Company, OpenSource Technologies delivers tailored Android apps that match your business goals and provide excellent performance across a wide range of devices.

Our team handles everything from planning and design to development using Java or Kotlin, rigorous testing, and deployment on the Google Play Store. As a full-service Custom Mobile App Development Agency, we also offer post-launch support and updates to ensure long-term success. Whether you’re starting from scratch or improving an existing app, we deliver reliable, scalable Android solutions built to perform.

What’s the difference between native and cross platform app development, and which one should I choose ?

Native app development focuses on building separate applications for iOS and Android using platform-specific technologies like Swift for iOS and Kotlin or Java for Android. These apps offer excellent performance and seamless integration with device features. For example, businesses looking for Custom iOS App Development Services often choose native development to deliver the best user experience on Apple devices. Similarly, Android App Development Services are ideal for building powerful, device-optimized applications for Android users.

On the other hand, cross platform app development allows developers to write a single codebase that runs on both iOS and Android. This approach is ideal for faster development, lower costs, and easier maintenance. As a Cross Platform Mobile App Development Company, OpenSource Technologies helps you choose the best strategy—native or cross-platform—based on your business objectives, budget, and scalability needs.