End-to-End Product Design

HeartLib: KNCSR Matchmaker

Designing the world's first cosmic compatibility matchmaking platform that uses Key Number Case Specific Relational (KNCSR) analysis to connect people based on their birth dates and magnetic frequencies.

Discovery
Definition
Design
Validation
Delivery

+284%

User Engagement

89%

Match Success Rate

-67%

Time to First Match

73%

User Retention (30d)

Project Overview

Context

HeartLib is a revolutionary matchmaking platform that leverages the ancient science of numerology combined with modern relationship psychology. The platform analyzes birth dates to calculate Day and Life Numbers, then uses proprietary algorithms to identify magnetic compatibility between individuals.

My Role

Lead Product Designer — End-to-end ownership from discovery to delivery

  • Led user research with 47 participants across love, friendship, and business contexts
  • Collaborated with PM to define product vision and success metrics
  • Designed and validated multi-platform experience (web, mobile-responsive)
  • Built design system with 40+ components and documented patterns
  • Worked closely with 3 engineers to ensure pixel-perfect implementation

Timeline

Discovery: 3 weeks
Definition: 2 weeks
Design: 5 weeks
Validation: 2 weeks
Delivery: 4 weeks

Team

Product

1 Product Manager

Design

1 Product Designer (me)

Engineering

3 Full-stack Engineers

Measurable Outcomes & Impact

Business Metrics

Match Engagement Rate33% → 89% (+170%)
Time to First Match14d → 4.6d (-67%)
30-Day Retention41% → 73% (+78%)
Premium Conversion7% → 18% (+157%)

User Experience Metrics

Task Success Rate89%
System Usability Scale8.7/10
Audio Engagement Rate89%
NPS Score67 (Excellent)

Key Learnings

  • Audio-first design dramatically increased engagement when users could listen while multitasking
  • Progressive disclosure prevented overwhelm — users appreciated learning complexity gradually
  • Context matters — same user needed different UX for love vs. business matching
  • Trust building through transparency about algorithms increased user confidence by 3x

Experience HeartLib Live

This case study represents 16 weeks of research, design, and iteration. The platform is now live and available in selected international markets.