APP Development

Deep Tech. Real Business Results. Your App, Fully Delivered.

TWJOIN specializes in enterprise app development, with over 100 published works. We cover lifestyle, F&B, travel, aesthetic medicine, social, live streaming, e-commerce memberships, loyalty programs, tools, and cross-border payments. We turn complex needs into executable architectures. Prioritizing high stability, security, and availability, we build competitive apps for your business.

APP

Native Dual-Platform APP
Built natively with Swift/Obj-C and Kotlin/Java for direct OS access. We ensure peak speed and stability - ideal for high-performance enterprise apps.
Kotlin + Swift Hybrid Development
Hybrid Development balances performance with efficiency. By maximizing cross-platform code reuse, we reduce development time while maintaining a great UX. This flexible approach is ideal for agile products requiring rapid iteration.
Flutter Development
Deploy to both iOS and Android with a single codebase. This unified approach accelerates time-to-market and cuts maintenance costs - ideal for projects prioritizing speed and efficiency over deep native hardware integration.
WebView (Embedded Web Pages)
Convert your existing website into an App instantly via WebView. This ultra-low-cost solution is ideal for content-based services or quick market validation.

APP

Lifestyle AppsApps are the ultimate tool for user retention. Our portfolio spans gas stations, dining, travel, logistics, e-commerce, eSIM, and streaming. We bring proven expertise to every daily touchpoint, ensuring a stable and successful launch.
Lifestyle Apps
IoT & Physical-Digital IntegrationScenario-Driven Execution. From machine data and heart rate monitoring to Bluetooth and IoT management, we build the technical foundation for any environment, delivering your business model directly into users' hands.
IoT Integration
Native Utility ImplementationRapid POCs for Bidding & Verification. We convert concepts into demonstrable native tools to validate feasibility and minimize initial risk, laying a solid technical foundation for future scalability.
Turning Native Features into Tools
Mobile AI ApplicationsAI is Going Mobile. With the rise of Apple Intelligence and Google Gemini, on-device AI is essential for future Apps. Whether Native or Cross-Platform, we seamlessly integrate advanced voice and text AI capabilities into your mobile ecosystem.
AI Applications for Mobile
Number of Apps Developed: 100+ Apps PublishedCreator of Popular Apps in Taiwan

APP

01

Requirement Consultation

At the start of our collaboration, we conduct in-depth interviews to understand your business model, core functionalities, and budget direction, breaking down the requirements into executable development items. Once the project is confirmed, the project manager immediately assembles a team and initiates a complete planning process, ensuring that subsequent progress is clear and controllable.

02

UI/UX Visual Design Planning

Upon entering the UI/UX design phase, we focus on user experience to create interfaces and operational flows with high usability. The design will be finalized after multiple rounds of discussion and adjustment, ensuring that the brand visuals, usage logic, and real-world scenarios are consistent and logical.

03

Programming, Automated Deployment, and Testing

The entire programming development process adheres to our internal standard procedures and ISO 27001 requirements. This is complemented by automated testing, version control, managerial-level code review, and multiple security checks, ensuring that the product maintains long-term stability in terms of performance, quality, and information security.

04

Launch and Deployment

Upon completion of development, we assist with launching the app on both platforms. Our familiarity with the App Store and Google Play review guidelines effectively reduces delays caused by inconsistent understanding of policies. We also provide server architecture recommendations and deployment services, ensuring the entire system is in its optimal state before the official launch.

05

Warranty and Maintenance

A warranty period will be clearly stipulated in the contract for all projects, with the duration depending on the development cost and functional complexity. During the warranty period, we provide free corrections for any defects inherent to the system itself. Should continuous maintenance be required after the warranty expires, we can offer stable long-term operation and maintenance services. The cost will be approximately 10% to 18% of the original project amount and will be adjusted based on the system scale and the personnel required for subsequent work.

APP

We adopt a pricing model based on man-days, where the project is comprehensively broken down into specific work items. We apply corresponding unit rates according to the technical attributes and labor effort required for each task. Our calculation principles are clear and consistent: the required manpower and time commitment form the primary basis of the project cost. If your company has an in-house team capable of handling tasks such as hosting or deployment, you are welcome to manage these independently without incurring any mandatory extra charges. We commit to full transparency in our quoting process. All costs and items will be thoroughly verified with you before project kickoff to avoid any hidden or unexplained fees.

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