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Web Applications

Custom-Built for Your Business

Custom Web Application Development in Singapore

Sometimes off-the-shelf software just does not fit your business. Whether you need a customer portal, internal dashboard, booking system, or a completely unique business tool, custom web application development gives you software built around your exact workflows. At TerrisDigital, we design and build custom web applications that solve real business problems and grow with your company.

Custom web application development with dual monitors showing React code and app dashboard
01

Custom application design & development

02

User experience (UX) design

03

Responsive web interface

04

API development & integrations

Process

How It Works

A proven process to deliver results for your business.

01

Discovery & Scoping

We work with you to understand your business processes, pain points, and objectives. We define the application scope, features, user roles, and technical requirements.

02

UX Design & Prototyping

We design the user experience and create interactive prototypes so you can see and test the application before development begins — reducing risk and ensuring alignment.

03

Agile Development

We build the application in iterative sprints, delivering working features regularly. You can see progress, provide feedback, and adjust priorities throughout development.

04

Testing & Quality Assurance

We rigorously test the application — functional testing, security testing, performance testing, and user acceptance testing — to ensure it is production-ready.

05

Deployment & Maintenance

We deploy the application, provide user training, and offer ongoing maintenance and support to keep it running smoothly and evolving with your business needs.

Deliverables

What's Included

Everything you get when you work with us.

Custom application design & development
User experience (UX) design
Responsive web interface
API development & integrations
User authentication & roles
Database design & management
Security implementation
Ongoing maintenance & support
FAQ

Web Applications FAQs

how much does a custom web application cost singapore
Custom web application development in Singapore typically starts from SGD 20,000 for a straightforward application and can range up to SGD 100,000+ for complex multi-user platforms with advanced integrations. The cost depends on the number of features, user roles, third-party integrations, and design complexity. TerrisDigital provides a detailed proposal after a free discovery session to scope your requirements.
when do i need a custom web app vs off the shelf software
Off-the-shelf software works well when your processes fit standard workflows. A custom web app makes sense when existing tools force you to change how you work, when you need to integrate multiple systems into one interface, or when you require specific reporting and automation that no existing product provides. Custom apps cost more upfront but eliminate ongoing subscription fees and workarounds.
how long does it take to develop a custom web application
A simple web application with core features takes 8 to 12 weeks, while complex platforms with multiple user roles, integrations, and advanced functionality may take 16 to 24 weeks. TerrisDigital uses agile development with two-week sprints, so you see working features early and can provide feedback throughout the process rather than waiting until the end.
best technology stack for web application 2025
Popular modern stacks include React or Next.js for the frontend, Node.js or Python for the backend, and PostgreSQL or MongoDB for the database. The best choice depends on your application requirements — React excels for interactive dashboards, Python is strong for data-heavy applications, and Node.js works well for real-time features. TerrisDigital selects the optimal stack for each project based on performance needs and long-term maintainability.
web app vs mobile app which should i build first
A web application is usually the better starting point because it works on all devices through a browser, costs less to develop than separate iOS and Android apps, and is easier to update. Many Singapore businesses launch with a responsive web app first, then build native mobile apps later once they have validated the product and user base. Progressive Web Apps (PWAs) can also bridge the gap by offering app-like features in the browser.
can a web application integrate with existing business software
Yes, custom web applications can integrate with virtually any business software that has an API — including CRM systems like Salesforce and HubSpot, accounting tools like Xero and QuickBooks, payment platforms like Stripe, and communication tools like Slack. TerrisDigital builds custom API integrations that ensure seamless data flow between your new application and existing systems, eliminating duplicate data entry.
do i own the source code of a custom web application
Yes, reputable development agencies transfer full ownership of the source code, database, and all intellectual property to you once the project is completed and paid for. You should receive access to the code repository, documentation, and deployment configurations. TerrisDigital provides 100% code ownership as standard — you are never locked into our services and can take the code to any developer in the future.
how to make web application pdpa compliant singapore
PDPA compliance for web applications requires encrypted data storage, secure authentication with multi-factor options, role-based access control, audit logging, and consent management for data collection. You also need to support data access requests from users and implement proper data retention policies. TerrisDigital builds these compliance features into every web application from the architecture phase, not as an afterthought.
what is agile development for web applications
Agile development breaks a project into short cycles called sprints, typically two weeks each, where working features are built, tested, and reviewed. This approach lets you see progress early, provide feedback, and adjust priorities throughout development instead of waiting months for a final delivery. It reduces risk because problems are caught early and requirements can evolve as you learn what works best.
how to build a customer portal for my business
A customer portal is a secure web application where your clients can log in to view orders, track progress, access documents, submit requests, or manage their accounts. It typically requires user authentication, role-based access, a dashboard interface, and integration with your existing business systems. TerrisDigital builds custom portals that reduce manual back-and-forth and give your clients self-service access 24/7.
can a web application scale as my business grows
Yes, when designed correctly from the start. Scalable web applications use cloud infrastructure like AWS or Google Cloud, efficient database design, and modular code architecture that allows new features to be added without rebuilding existing ones. A well-architected application can grow from 100 to 10,000+ users without performance degradation or a complete rewrite.
how to integrate stripe payment in web application singapore
Stripe Singapore supports credit cards, debit cards, PayNow, and GrabPay, making it the most versatile payment integration for Singapore web applications. Integration involves setting up a Stripe account, implementing their API for payment processing, building a secure checkout flow, and configuring webhooks for payment confirmations. TerrisDigital implements Stripe with proper error handling, retry logic, and PCI-compliant security practices.
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Let us develop a web application tailored to your exact business needs. Get started with a free consultation.

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