01 · Service
Custom web applications, built to scale with your business.
From customer-facing portals to full SaaS platforms, built to scale with your business.
- Customer portals & dashboards
- SaaS products & platforms
- Booking & scheduling systems
- E-commerce & payment flows
- Marketplaces & multi-tenant apps
We use React, Next.js, and Node.js with PostgreSQL, a modern stack that's fast to build on, easy to maintain, and scales when you need it to. Deployed on Cloudflare for speed and reliability.
React and Next.js give us fast iteration speed with full type safety through TypeScript: fewer bugs in production and easier refactoring as your product evolves. Node.js on the backend means a single language across the entire stack, which keeps development efficient and lowers the barrier for future maintainers. PostgreSQL handles complex data relationships, scales horizontally when you need it to, and has decades of proven reliability behind it.
Off-the-shelf platforms work for generic problems. But as your business grows, you start hitting walls: rigid data models, missing integrations, pricing that scales faster than your revenue. A custom web application is built around your specific workflows, connects to the tools you already use, and grows with you instead of against you. You own the code, you control the roadmap, and you never pay per-seat fees for features you don't need.
Most web application projects run between 8 and 16 weeks from kickoff to launch, depending on scope. We start with a focused discovery phase to nail down requirements, then move into weekly build cycles where you see real progress, not slide decks.
You get a dedicated point of contact throughout the project, access to a staging environment from week one, and clear communication about timelines and trade-offs. After launch, we handle deployment, monitoring, and ongoing iteration so you can focus on your business instead of babysitting infrastructure.

JunkZip: A vetted junk-removal directory we built and operate ourselves
A paid directory of vetted junk-removal companies across Miami-Dade: hauler onboarding with document review, zip-code listings with per-area caps, subscription billing, and an admin console with a full audit trail. Designed, built, and run by 0ARCH.

CTI ERP: A custom inventory and order management system for a telecom distributor
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Build vs Buy Software in 2026: The Decision Framework That Actually Works
Five questions to decide if custom makes sense.
Read →What Custom Software Actually Costs in 2026
Pricing ranges for websites, CRMs, portals, and ERPs.
Read →You've Outgrown Spreadsheets. Here's What to Build Next.
Signs it's time and what to replace them with.
Read →We also build Business Software and Tools & Dashboards. See our own products built with these same technologies.
How much does custom web application development cost?
Focused builds start around $8,000. Most full web applications run between $30,000 and $150,000 depending on scope, integrations, and complexity. A simple customer portal with authentication and a dashboard typically falls on the lower end, while multi-tenant SaaS platforms with complex billing and integrations land on the higher end. We provide a fixed quote after a free discovery call.
How long does it take to build a custom web app?
Most web application projects run 8 to 16 weeks from kickoff to launch. We start with a 1-2 week discovery phase, then move into weekly build cycles so you see real progress every week. You have staging access from week one.
What technology stack do you use?
We use React and Next.js on the frontend, Node.js on the backend, and PostgreSQL for the database. We deploy on Cloudflare Workers for global edge performance. This stack is modern, well-supported, and easy for any future developer to pick up.
Do I own the code?
Yes. You own 100% of the code we deliver, hosted in your own GitHub organization if you want. No licensing fees, no per-seat pricing, no lock-in.
What happens after launch?
We offer ongoing support and iteration plans: bug fixes, new features, monitoring, and infrastructure management. You can also take the codebase in-house or hand it to another team. Everything is documented.
Can you replace our current web app or SaaS?
Often, yes. Many teams come to us frustrated with a WordPress site that can't scale, a SaaS tool with pricing that balloons per user, or a legacy app nobody wants to maintain. We audit the current system, map the workflows that matter, and rebuild with a modern stack.