TypeScript Throughout
Type safety is enforced across UI, APIs, and data access so bugs are caught before production.
React Apps
Services in France
Scalable SPAs, dashboards, and SaaS products built with React and Next.js. Clean architecture, TypeScript, and production-ready delivery from day one. Trusted by businesses across France.
How We Work
Our proven process.
We treat application work like product engineering, not page assembly. That means architecture, observability, and release quality are part of the baseline.
- 01
Technical Discovery
Requirements, data model boundaries, API needs, and integration constraints are clarified before implementation begins.
- 02
UI Design & Product States
Core screens, edge states, and product behavior are designed around real data and real usage scenarios.
- 03
Foundation Sprint
Framework setup, auth, database schema, CI/CD, staging, and monitoring are built before feature work accelerates.
- 04
Feature Delivery
We ship in structured iterations with clear visibility into completed work, current scope, and next milestones.
- 05
QA, Load & Launch
Type checks, end-to-end validation, performance review, and phased launch preparation happen before production rollout.
Why GAP3 in France
Why businesses choose GAP3.
Scalable Architecture
Feature boundaries and code organization make onboarding easier and long-term maintenance less risky.
Performance First
Rendering strategy, caching, and data flow are chosen around real user speed and core vitals.
Automated Delivery
Type checks, tests, and deployment are built into the workflow instead of relying on manual discipline.
Deliverables
What you receive.
Next.js Application Source
A complete repository with typed application code and a production-ready structure.
Database Schema & Migrations
Tracked schema changes and reproducible migrations for clean environment setup.
Authentication System
Role-aware sign-in, access control, and session handling shaped around the product requirements.
Analytics & Monitoring
Error tracking, behavior analytics, and production visibility configured from launch.
API Documentation
Route contracts, data shapes, and integration notes documented for the engineering team.
CI/CD Pipeline
Automated checks and deployment workflow across staging and production environments.
Security Audit
Dependency review, configuration notes, and practical safeguards documented for launch.
Codebase Walkthrough
A handoff session so your team understands the app structure and extension points.
By The Numbers
Measurable performance impact.
30+
Apps Shipped
<100ms
API Response Time
99.9%
Uptime SLA
100%
TypeScript Coverage
Investment
Transparent pricing.
Starter
Starter App
₹
60,000
/ project
React / Next.js setup with API integration and authentication.
React / Next.js setup
Up to 5 screens
API integration
Authentication system
Design not included.
Popular
Most Popular
SaaS Starter
₹
120,000
/ project
Dashboard + database integration with role-based authentication.
Up to 12 screens
Dashboard system
Database integration
Role-based authentication
Design not included.
Enterprise
Scalable App
₹
200,000
+/ project
Advanced SaaS architecture with deployment setup and integrations.
Advanced SaaS architecture
Multi-role dashboards
API integrations
Deployment setup
Design not included.
GST Notice
Prices exclude GST. India (IN): 18% GST is added at checkout.
FAQ
Common questions.
Next.js gives us server-side rendering, image optimization, file-based routing, API routes, and edge deployment out of the box. It solves SEO and performance challenges that are painful to retrofit into a plain React app.
Yes. Unit tests for business logic, integration tests for API routes, and end-to-end tests for critical user paths. Coverage levels are scoped by project size and budget.
Most clients continue with a monthly retainer for ongoing development. We can also hand off to your internal team with documentation and a recorded codebase walkthrough.
Yes. We connect to REST APIs, GraphQL endpoints, and databases directly. We've integrated with Salesforce, HubSpot, Intercom, and many internal APIs.
We use lightweight, explicit tools based on project needs. For modern Next.js builds that usually means URL state, local component state, and focused client or server data flows rather than unnecessary global complexity.