Custom software development is the design and creation of applications built specifically for a single business's needs — as opposed to off-the-shelf software. Moddtech builds custom web apps, mobile apps, and internal tools in modern frameworks like React, Flutter, Node.js, and Python.
Who it's for
Businesses with unique workflows that generic software can't handle, operations teams replacing spreadsheets and manual processes, and enterprises building internal tools for specific departments.
  • Solve business problems that off-the-shelf software can't
  • Automate repetitive work to free up staff time
  • Integrate with your existing systems and data
  • Own your source code and roadmap
  • Scale the software as your business grows
Process

How it works, step by step

01
Discovery & Requirements
Interviews with end users, stakeholders, and operations. Outcome: written scope, user stories, and technical recommendations.
02
Architecture & Design
System architecture (backend, frontend, data model, integrations) and UX/UI design in Figma. Review and sign-off before development.
03
Agile Development
Two-week sprints with biweekly demos. You see progress continuously and can course-correct early.
04
QA & User Testing
Automated and manual testing throughout development. Real-user testing in staging before launch.
05
Deployment & Evolution
Infrastructure provisioning, CI/CD, and go-live coordination. Post-launch bug fixes and feature additions through retainer or project agreements.
Our toolbox
10
+

technologies in rotation.

Picked per project — never one-size-fits-all. Hover any tile to learn what we use it for.
12
Years compounded
10
Active stacks
24/7
On-call coverage
React
GSAP
FAQ

Questions we hear most often.

Don't see what you're looking for? Ask us directly — bilingual response within one business day.

When should I build custom software instead of buying?

Build custom when your process is a competitive differentiator or too specific for off-the-shelf tools to handle. Buy when your need is a standard function (email, accounting, basic CRM). We'll tell you honestly which path fits.

What technologies do you build on?

For web apps: React, Next.js, Vue, Angular, or Svelte on the frontend; Node.js, Python, or Java on the backend. For mobile: Flutter, React Native, Swift, or Kotlin. Databases: PostgreSQL, MongoDB, DynamoDB. Infrastructure: AWS or GCP.

Will I own the code?

Yes. 100% of custom code is yours at project end. We deliver a clean repository, documentation, and deployment setup. No license fees, no lock-in.

How do you handle integrations with our existing systems?

Most custom apps integrate with existing tools: CRMs (Salesforce, HubSpot), accounting (QuickBooks, SAP), payments (Stripe), email (SendGrid), and more. Every integration is documented and tested.

How long does custom software take to build?

MVPs launch in 8 to 16 weeks. Full-featured platforms typically run 16 to 32 weeks depending on feature count, integrations, and infrastructure complexity.

What happens after launch?

Every project includes training and documentation. Ongoing development, bug fixes, and feature additions are handled through monthly retainer agreements or project-by-project contracts.

Software that fits your business

Off-the-shelf software works until it doesn't. When your operations are a competitive advantage or too specific for generic tools to handle, custom software becomes cheaper in the long run than fighting against the limitations of a product built for someone else.

Modern stacks, proven patterns

We build on mainstream, well-supported technologies so your code stays maintainable. React and Next.js for web, Flutter for mobile, Node.js and Python for backends, PostgreSQL and MongoDB for data. Kubernetes and Docker for scalable deployment on AWS or GCP.

You own what we build

Every line of code we write is yours. Source code, documentation, deployment configs — all delivered in a private Git repository you control. No vendor lock-in. No license fees.

From MVP to scale

We've shipped custom software for AR/VR engineering workflows, rental marketplaces, drilling operations, and industrial inventory control. The stack scales. The process scales. The team scales.

Featured case studies

Outcomes, not output.

Compact 3D
Clarvoyant AR/VR Engineering
+218% organic sessions in 90 days
Lend Me It
Rent Everything
+218% organic sessions in 90 days
Globexplore
Drilling & Analytics
+218% organic sessions in 90 days
Next step
Ready to talk about custom web design?
Custom websites, e-commerce, and web apps engineered for performance, accessibility, and growth. We respond to every consultation request within one business day, in English or Spanish.
Schedule a consultation
Hermosillo MX
+52 (662) 268-5784 or email us
Portland OR
+1 (503) 388-9876 or email us
LET'S WORK TOGETHER
React, Next.js, Vue, Angular, Node.js, Python, Java, Flutter, React Native, PostgreSQL, MongoDB, DynamoDB, AWS, GCP, Docker, Kubernetes