Custom apps for businesses that outgrow off-the-shelf software
Most businesses start with off-the-shelf SaaS — QuickBooks, ServiceTitan, Salesforce, HubSpot, Monday — and that's the right call. The problem comes when those tools stop fitting the business. You spend an hour every day exporting data into spreadsheets to do what the tool can't. You pay for features you'll never use and wait for features you actually need.
That's the moment to consider a custom web application. Preisser Tech builds purpose-built applications that match your exact workflow, integrate with the tools you already use, and remove manual work that's eating hours every week.
What custom web apps look like in practice
Most projects fall into one of these categories — though every build is custom-scoped:
- Internal operations tools — dashboards, work order systems, inventory tracking, scheduling, dispatch, and back-office automation custom to how your business actually runs.
- Client portals — branded customer-facing applications where your clients can log in, view status, submit forms, upload documents, and communicate with your team.
- Custom CRMs — when off-the-shelf CRMs (HubSpot, Salesforce, Pipedrive) don't fit your sales process or industry workflow.
- AI-powered applications — apps with embedded AI agents that handle research, document processing, customer service, or decision support as a core feature.
- Marketplace platforms — multi-sided applications connecting buyers and sellers, with custom payment, listing, and transaction logic.
- Booking and scheduling systems — appointment booking, resource scheduling, route optimization, technician dispatching customized to your industry.
- Data integration platforms — custom systems that pull from multiple sources (QuickBooks, OGsys, ServiceTitan, custom databases), reconcile, and produce reports or trigger workflows.
Named projects we've shipped
Real applications Tyler has built recently:
HG Oil Holdings — Custom Inventory Management System
HG Oil Holdings was losing significant time and money tracking inventory manually. Tyler built a custom web application that records new materials, provides live counts, allows transfers between locations, and uses built-in formulas to mark up specific values. Result: 95% reduction in back-office tracking time, 75%+ accuracy improvement, and the inventory function transformed from a loss center into a profit center. Plus 10+ hours per week freed up across multiple positions.
HG Oil Holdings — AI Invoicing Assistant
Office staff at HG Oil Holdings were spending 40+ hours weekly handling, dispersing, and approving invoices manually. Tyler built a web application that pairs with a trained AI assistant to extract data from uploaded invoices in seconds. Result: 75% decrease in time spent on manual invoice handling, fully eliminated the need to read invoices manually, and prevented the need to hire additional admin staff.
Wife Supply Co — AI Gifting Platform
A client came with an app idea and no technical background. Tyler took the concept from idea to a fully functional AI-powered gifting platform — product design, full-stack development, integration with AI services, payment processing, and launch. The platform handles user accounts, AI-driven gift recommendations, and end-to-end purchase flow.
Modern stack, edge deployment
Preisser Tech web applications are built on a deliberately modern, performance-focused technology stack:
- Next.js + React + TypeScript for the application framework
- Tailwind CSS or similar utility-first systems for the design system
- Modern auth solutions (custom JWT, Clerk, NextAuth depending on requirements)
- Database options ranging from Postgres (Neon, Supabase) to Cloudflare D1 to custom backends
- AI integration via OpenAI, Anthropic Claude, or custom inference endpoints depending on requirements
- Edge deployment to Cloudflare Workers + Pages, Vercel, or AWS depending on scale
- Built-in observability, error tracking, and performance monitoring