Full-Cycle Custom Webapps
We take your webapp from the first workshop to launch and beyond. Built with web technology, it can be installed, work offline and feel like a native mobile app.
Custom Web Development Agency
Webapp Development Singapore
retroXpect is a Singapore-based team that designs and builds custom web applications. We work closely with you from the first conversation to launch, so the finished webapp fits the way your business actually runs.
- Webapps perform actions, websites display content
- No app store approval needed—faster time-to-market
- PWAs bridge the gap between web and native apps
Why go custom
Why Build a Custom Webapp?
When templates and off-the-shelf platforms can't keep up with how your business works, it's time to go custom. Here's what you gain.
Websites display content.
Webapps perform actions.
We build webapps that DO things for your business.
Websites
Display content, provide information, minimal user interaction beyond navigation.
Webapps
Perform actions, process data, enable complex user interactions and workflows.
Built around your brand
Every screen is designed for your business and your customers, not adapted from someone else’s template.
Easier to find in search
Clean, fast pages with a clear structure give search engines a site they can crawl and understand.
Simpler for your users
Workflows are shaped around the people who use them every day, so common tasks take fewer steps.
Security built in
Role-based access control, OAuth2/JWT authentication, data encryption and OWASP best practices from day one.
Ready for growth
The architecture is planned for more users, more data and new features, so the app keeps up as you grow.
No app store in the way
Users open it instantly in any browser. There are no downloads, no store approvals and no separate iOS and Android builds.
Our services
Our Custom Web Development Services
Our Singapore-based team builds enterprise-grade web applications end to end. These are the services we bring to every project.
UI/UX Design
People stop using software that ignores them. We map user flows, wireframe and prototype before we build, so the finished app is clear and easy to use.
Third-Party Integrations
Your webapp doesn't exist in isolation. We seamlessly integrate with payment gateways, CRMs, ERPs, and any third-party service with an API.
Advanced Front-End Development
Interactive interfaces that respond instantly, with live updates, collaborative features and real-time data synchronisation over WebSockets.
How we work
Our Custom Web Development Process
We follow an agile methodology with clear phases and regular client communication. You're never in the dark about your project's progress.
1Step 1 of 9
Getting to know you
Tell us about your business, your users and the problem you want the webapp to solve.
2Step 2 of 9
Kick-off
We agree on goals, scope and timeline, and sort out the essentials such as domain, hosting and SSL.
3Step 3 of 9
Requirements
We analyze your requirements and create detailed specifications.
4Step 4 of 9
Wireframes
Every screen and user flow is mapped out, so usability issues are caught before any code is written.
5Step 5 of 9
UI design
Approved wireframes become polished mockups for you to review on desktop and mobile.
6Step 6 of 9
Development
Agile sprints with regular demos and continuous integration.
7Step 7 of 9
Testing & QA
Comprehensive testing including security audits.
8Step 8 of 9
User acceptance testing
You try the webapp before it goes live. We fix anything you flag and show your team how to run it.
9Step 9 of 9
Launch & support
Zero-downtime deployment with ongoing maintenance.
Our expertise
Our Custom Web Development Expertise
We use modern, battle-tested technologies that balance developer productivity with application performance. Our stack is chosen for reliability, scalability, and long-term maintainability.
Frontend
Fast, accessible interfaces that work on every screen size.
- React
- Next.js
- TypeScript
Backend & data
APIs, business logic and databases built to scale with your users.
- Node.js
- PostgreSQL
- MongoDB
- Redis
Cloud & hosting
Containerised deployments on dependable cloud platforms.
- Docker
- AWS/GCP
- Vercel
Custom eCommerce
Custom eCommerce Webapp Development
Some online businesses outgrow off-the-shelf store builders. When you need custom pricing, workflows or many sellers on one platform, we build the eCommerce webapp around your business model.
Prefer Shopify, WooCommerce or Ecwid? See our eCommerce solutionsB2B
B2B eCommerce
A portal built around how your business customers buy, with account-based pricing, bulk orders, quotes and approvals, connected to your sales and inventory systems.
B2C
B2C eCommerce
A storefront tailored to your industry, with features such as booking modules, loyalty rewards and seasonal promotions that turn first-time shoppers into repeat customers.
Multi-vendor
Marketplace
One platform where many sellers list and many buyers shop. We build the listings, search, seller dashboards and secure transactions that hold it together.
Why retroXpect
Why Choose retroXpect for Your Webapp
We take ownership of your project from the first conversation to launch, and we're still here after it goes live.
Our own team, start to finish
Your webapp is designed and built by retroXpect's own team, not passed on to outsourced developers, so quality is checked at every milestone.
Mobile responsive by default
Every screen is built to work as well on a phone as it does on a desktop.
Specialised features
When your industry needs something off-the-shelf software can't do, we design and build it.
A dedicated point of contact
One person stays with you from requirements to launch, so you always know who to talk to.
Based in Singapore
We understand how local businesses work, and we work in your time zone.
FAQ
Frequently asked questions
Webapp development is the process of creating software applications that run in web browsers. Unlike traditional websites, webapps are interactive applications capable of complex operations like user authentication, data processing, and real-time collaboration.
Websites display content, provide information, and offer minimal interaction beyond navigation. Webapps perform actions, process data, and enable complex user interactions and workflows. Think of a restaurant's brochure website versus its online ordering system.
Simple MVPs typically take 4-8 weeks. Medium-complexity webapps with custom features take 2-4 months. Enterprise-level projects may take 4-6 months or more. We provide detailed timelines after understanding your requirements.
Costs vary based on complexity. Simple webapps start from SGD 8,000-15,000. Mid-range projects range from SGD 15,000-50,000. Enterprise solutions can exceed SGD 50,000. We provide transparent, detailed quotes.
We use React and Next.js for frontend, Node.js for backend, PostgreSQL and MongoDB for databases, and cloud platforms like AWS, Google Cloud, and Vercel for hosting.
Yes, we offer maintenance packages including bug fixes, security updates, performance optimization, and feature enhancements. We ensure your webapp stays secure and running smoothly.
Ready to Build Your Webapp?
Let's discuss your project and create a custom solution that drives your business forward.