ChinhDev

Service Packages & Pricing

Custom software development services with flexible engagement models

Remote from Vietnam • End-to-end Ownership

Business Landing Page

$200-$500

Modern, lightweight static sites with instant performance.

  • ✓ Vite build system for lightning-fast HMR
  • ✓ SEO-optimized static HTML/CSS/JS
  • ✓ Zero server costs (CDN, Vercel, Netlify)
  • ✓ Instant page loads and Lighthouse 100 scores
  • ✓ Easy content updates via Git
  • ✓ Dark mode, responsive design out of the box

Perfect for:

  • • Portfolio websites
  • • Business landing pages
  • • Product showcases
  • • Documentation sites
  • • Marketing microsites
✓ Pros
  • • Fastest performance
  • • Lowest cost
  • • Easiest maintenance
✗ Cons
  • • No backend
  • • No database
  • • Limited dynamic features
Tech Stack:

Vite, Tailwind CSS, Vanilla JS/React/Vue

Management System

$800-$1,500

Full-featured CMS/CRM for managing content, customers, and business data.

  • ✓ ASP.NET 9.0 with Razor Pages or MVC
  • ✓ SQL Server database integration
  • ✓ Fast MVP development with iterative approach
  • ✓ Production-ready deployment (CI/CD, cloud, monitoring)
  • ✓ Scalable architecture for growth
  • ✓ RESTful APIs for mobile/frontend integration

Perfect for:

  • • Startup MVPs
  • • Product launch
  • • Scale-ready systems
  • • SaaS applications
  • • Business management systems
✓ Pros
  • • Full data persistence
  • • User accounts
  • • Complex business logic
  • • Scalable architecture
✗ Cons
  • • Higher hosting costs
  • • Server maintenance
  • • Slower page loads
Tech Stack:

ASP.NET 9.0, SQL Server, Entity Framework, Razor Pages/MVC

Utility Android App

$400-$800

Custom mobile applications for Android devices with optimal performance.

  • ✓ Native Android development with Kotlin
  • ✓ Cross-platform with React Native/Flutter
  • ✓ Material Design guidelines
  • ✓ Offline data synchronization
  • ✓ Push notifications and background services

Perfect for:

  • • Utility apps
  • • Business applications
  • • Customer apps
  • • Cross-platform solutions
  • • Offline-first applications
✓ Pros
  • • Native performance
  • • Offline capabilities
  • • App store distribution
  • • Push notifications
✗ Cons
  • • Multiple platforms to maintain
  • • App store review process
  • • Platform-specific updates
Tech Stack:

Native Kotlin, React Native/Flutter, Material Design

AI & Computer Vision Solutions

Starting from $1,000

Practical AI systems optimized for production environments.

  • ✓ Face Recognition systems
  • ✓ Image processing & feature extraction
  • ✓ License Plate Recognition (LPR)
  • ✓ Inference optimization (server/edge/mobile)

Perfect for:

  • • Security systems
  • • Automated inspection
  • • Mobile AI features
✓ Pros
  • • High accuracy
  • • Real-time processing
  • • Custom solutions
  • • Production-optimized
✗ Cons
  • • Higher complexity
  • • Specialized hardware
  • • Model maintenance
Tech Stack:

Python, OpenCV, TensorFlow/PyTorch, ONNX Runtime

Focus: Accuracy, performance, stability in real-world deployment

AI Chatbot Integration

$500-$1,000

Document-based chatbot with RAG. Answer questions from your knowledge base using Gemini or ChatGPT API.

  • ✓ Document upload & processing
  • ✓ RAG implementation for accurate answers
  • ✓ Support for Gemini & ChatGPT APIs
  • ✓ One-time integration fee
  • ✓ User provides own API key (usage-based pricing)
  • ✓ Easy integration to existing website

Perfect for:

  • • Customer support automation
  • • FAQ & documentation chatbot
  • • Internal knowledge base assistant
  • • Product recommendations
  • • Lead generation
✓ Pros
  • • No monthly maintenance fee
  • • You control API costs
  • • Custom knowledge base
  • • Fast implementation
✗ Cons
  • • Requires API key setup
  • • API usage costs apply
  • • Limited to text docs
Tech Stack:

RAG, Vector Database, Gemini API/ChatGPT API

Pricing: One-time integration fee $500-$1,000. User provides own API key for ongoing usage costs.

Technical Consulting (Remote)

$100-$300/hour or retainer

Strategic technical guidance for startups and growing teams.

  • ✓ System architecture design
  • ✓ Code & system reviews
  • ✓ Technology roadmapping for startups
  • ✓ Developer mentoring & training

Perfect for:

  • • Startups
  • • Teams needing technical leadership
  • • Architecture planning
✓ Pros
  • • Quick impact
  • • Expert guidance
  • • Flexible engagement
  • • Knowledge transfer
✗ Cons
  • • Requires team buy-in
  • • Implementation responsibility
Tech Stack:

Architecture review, Technology selection, Best practices

Focus: Remote collaboration, long-term partnership, product-focused guidance

Engagement Models

Project-based

  • • Complete development from concept to deployment
  • • Deliverable-focused milestones
  • • Fixed or milestone-based pricing
  • • Clear scope and timeline

Remote Contract / Full-time Remote

  • • Dedicated hours per week/month
  • • Ongoing support and maintenance
  • • Regular communication and updates
  • • Hourly or monthly retainer

Technical Consulting / Retainer

  • • Ongoing advisory and strategy
  • • Periodic code and system reviews
  • • Strategic technical guidance
  • • Retainer or hourly rate

"Value I bring is more important than hours worked"

Ready to Start Your Project?

Send me an email to discuss your project needs

Contact via Email