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After children become independent, couples aged 50-63 looking to sell their Seoul apartment (approx. 1,000 sq ft, valued at approx. $600,000-$1,125,000) and relocate to outer suburbs or smaller cities must check capital gains tax (holding period, single-home tax exemption requirements), acquisition tax on the new home, health insurance premium changes (property-based recalculation), comprehensive income tax impact when receiving National Pension/Retirement Pension, and destination area hospital/transit/amenity accessibility—all on different websites. Between real estate agents (one each for selling and buying), Tax Accounting consultation (approx. $225-$375), and site visits (2-3 trips), they spend an average of 6 months and approx. $1,500-$3,000, yet still make the decision without knowing exactly 'how much monthly living costs will actually decrease after relocating.'
Users input current home details (size, market value, holding period) and 3 desired relocation areas on the web, and the system compares in a single table for each area: (1) estimated capital gains tax and acquisition tax, (2) estimated monthly health insurance premium change, (3) comprehensive income tax impact on pension income, and (4) hospital/public transit/grocery accessibility scores. It shows the 'current monthly fixed costs vs. post-relocation monthly fixed costs' difference on a monthly basis and calculates the break-even point for 'how many years until relocation becomes financially advantageous.'
| N Novelty | 1-5 | How uncommon the service is in market context. |
| U Urgency | 1-5 | How urgently users need this problem solved now. |
| M Market | 1-5 | Market size and growth potential from proxy indicators. |
| R Realizability | 1-5 | Buildability for a small team with realistic constraints. |
| V Validation | 1-5 | Validation signal quality from competition and demand data. |
| Tech Complexity | / 40 | Difficulty of core implementation stack. |
| Data Availability | / 25 | Practical availability and cost of required data. |
| MVP Timeline | / 20 | Expected time to ship a usable MVP. |
| API Bonus | / 15 | Bonus for viable public API leverage. |
| Competition | / 20 | Signal quality from competitor landscape. |
| Market Demand | / 20 | Demand proxies from search and mention patterns. |
| Timing | / 20 | Fit with current shifts in tech, behavior, and regulation. |
| Revenue Signals | / 15 | Reference evidence for monetization viability. |
| Pick-Axe Fit | / 15 | How well the concept serves participants in a trend. |
| Solo Buildability | / 10 | Practicality for lean-team implementation. |