Stop Planning, Start Building Products That Generate Revenue

I help growing companies turn business ideas into working prototypes in 2-4 weeks

Most companies spend months creating PowerPoints and debating features while competitors ship actual products. I build real MVPs that validate market demand and generate paying customers.

My Prototype Development Philosophy

Build to learn, not to impress

🎯

Problem-First, Not Feature-First

Start with a genuine problem you can solve, not a list of cool features you want to build.

Accountabilly solves procrastination, not just goal tracking

💰

Revenue From Day One

Build monetization into the prototype. If people won't pay for the basic version, they won't pay for the full version.

All my apps have subscription models built in from launch

🚀

Ship Fast, Learn Faster

Get working prototypes into users' hands in weeks, then iterate based on actual usage, not assumptions.

2-week MVP delivery, then optimize based on real user feedback

Modern Tech, Proven Tools

Use current, stable technologies that enable rapid development and easy maintenance.

React Native, Next.js, proven APIs - no experimental tech in prototypes

Proven Track Record: 3 Live Products with Paying Users

I don't just build demos - I create products that people actually pay for

Before I help you prototype your ideas, here's what I've built and launched:

Accountabilly

Live Beta with Subscriptions

AI-powered accountability coach with voice check-ins and personalized guidance

Business Model:Freemium SaaS ($4.99-$9.99/month)
Validation:Beta users converting to paid subscriptions, ready for app store launch

Guideless

Live with Paying Customers

Adventure navigation app that encourages discovery and spontaneous exploration

Business Model:Freemium model (€4.99/month premium)
Validation:Active user base, proven payment conversion, sustainable revenue

Etappa

Beta Launch Ready

Multi-day adventure planning platform with GPX analysis and accommodation booking

Business Model:Affiliate revenue from accommodation bookings
Validation:Beta platform complete, booking partner integrations established

Types of Prototypes I Build

From mobile apps to web platforms - tailored to your validation needs

Mobile App Prototypes

2-4 weeks

Cross-platform apps that work on both iOS and Android from a single codebase

Examples:

AI-powered mobile appsNavigation and GPS appsSocial and communication appsProductivity and goal tracking

Key Deliverables:

  • Working mobile app installable on devices
  • App Store / Google Play ready build
  • Basic subscription or payment integration

Web App Prototypes

3-5 weeks

Full-stack web applications with modern interfaces and business logic

Examples:

SaaS platformsPlanning and management toolsE-commerce prototypesData visualization dashboards

Key Deliverables:

  • Fully functional web application
  • User accounts and authentication
  • Payment processing integration

AI-Powered Prototypes

3-6 weeks

Applications that integrate AI capabilities for automation or enhancement

Examples:

Chatbots and conversational AIContent generation toolsProcess automationIntelligent analysis platforms

Key Deliverables:

  • Working AI integration with real functionality
  • Cost-optimized AI usage and monitoring
  • User interface for AI interactions

Integration Prototypes

2-4 weeks

Systems that connect existing tools and automate workflows between platforms

Examples:

API orchestration systemsWorkflow automation toolsData synchronization platformsMulti-system dashboards

Key Deliverables:

  • Working integration with target systems
  • Automated workflow execution
  • Error handling and monitoring

How I Build Your Prototype

Structured approach that delivers working products fast

1

Concept Validation

2-3 days

Validate the core idea and define the minimum viable product that proves market demand.

Key Activities:

  • Problem definition and user story mapping
  • Core feature prioritization (must-have vs nice-to-have)
  • Technical feasibility assessment and technology selection
  • Basic user flow design and interface mockups
  • Success metrics definition and measurement plan
2

Rapid Development

1-3 weeks

Build the core functionality with focus on proving the central value proposition.

Key Activities:

  • Core feature implementation with working user interface
  • User authentication and basic data management
  • Payment/subscription system integration where relevant
  • API integrations and external service connections
  • Basic testing and bug fixing for core workflows
3

User Testing & Iteration

3-5 days

Get feedback from real users and refine based on actual usage patterns.

Key Activities:

  • User testing setup and feedback collection
  • Performance optimization and bug fixes
  • Interface refinement based on user feedback
  • Business model validation and pricing strategy
  • Deployment and launch preparation
4

Launch & Handover

2-3 days

Deploy the prototype and provide everything needed for ongoing development.

Key Activities:

  • Production deployment and monitoring setup
  • Documentation and code walkthrough
  • Performance monitoring and analytics setup
  • Scaling roadmap and technical debt assessment
  • Team training and knowledge transfer

From Prototype to Product Success

Real examples of rapid prototyping that became revenue-generating businesses

Challenge

Personal Challenge: Friends struggling with goal achievement

Approach

Built Accountabilly AI coach in 2 weeks to solve procrastination, not just tracking

Outcome

Live beta with paying subscribers, ready for App Store launch

2 weeks to MVP, 4 weeks to subscription model

Key Lessons

  • AI implementation works when it solves real user psychology
  • Voice interfaces dramatically increase mobile app usage
  • Freemium models need clear value differentiation

Challenge

Adventure Planning Complexity: Multi-day trip planning takes entire weekends

Approach

Built Etappa to automate GPX analysis, accommodation search, and booking

Outcome

Complete platform with booking partnerships and affiliate revenue model

5 weeks to full platform with revenue integration

Key Lessons

  • Affiliate models work when you solve genuine planning pain
  • GPX processing is complex but valuable
  • Users pay for time savings, not just features

Challenge

Digital Navigation Dependency: GPS killing sense of adventure

Approach

Created Guideless with discovery-focused navigation and adventure encouragement

Outcome

Live on app stores with paying customers and sustainable revenue

3 weeks to MVP, 6 weeks to revenue generation

Key Lessons

  • Counter-intuitive products can find strong niche markets
  • Subscription models work for specialized tools
  • Battery optimization crucial for GPS apps

Why Prototype Before Full Development

Reduce risk and accelerate success with validated concepts

Validate Market Demand

Prove people will pay for your solution before investing in full development.

Risk avoided: Avoid building products nobody wants (70% of startups fail due to no market need)

Test Technical Feasibility

Identify and solve technical challenges early when changes are cheap and fast.

Risk avoided: Prevent expensive architecture decisions that require complete rebuilds later

Refine User Experience

Learn how users actually interact with your product, not how you think they will.

Risk avoided: Avoid interface designs that confuse users and hurt conversion rates

Attract Investment or Customers

Working prototypes get funding and customers much easier than presentations and mockups.

Risk avoided: Reduce dependency on others believing in your vision without proof

Plan Development Roadmap

Understand what features matter most and plan development priorities based on real usage.

Risk avoided: Prevent feature creep and focus resources on functionality that drives revenue

Working Product

  • Fully functional prototype with core features implemented
  • User authentication, data storage, and basic admin functionality
  • Payment processing integration (where applicable)
  • Professional user interface and user experience design
  • Performance optimized and tested on target platforms

Business Validation

  • Market validation approach and success metrics measurement
  • Revenue model implementation and pricing strategy validation
  • User feedback collection and analysis framework
  • Competitive analysis and positioning recommendations
  • Go-to-market strategy and launch planning

Technical Foundation

  • Modern, maintainable codebase with documentation
  • Scalable architecture that can grow with your business
  • Deployment setup and production environment configuration
  • Monitoring and analytics implementation
  • Technical debt assessment and scaling roadmap

Knowledge Transfer

  • Complete technical documentation and code walkthrough
  • User guides and administrative documentation
  • Team training on system architecture and maintenance
  • Future development roadmap with priority recommendations
  • Ongoing support plan and scaling consultation

Ready to Turn Your Ideas Into Real Products?

I've built 3 live products that generate revenue and helped companies validate ideas quickly with real market feedback. Let's discuss what you want to build.

While you're planning, competitors are shipping. Let's get your prototype built and in customers' hands within weeks.