Retirement Hobby Cost Simulator

3.35

Derivation Chain

Step 1 Retirement preparation trend among people in their 50s

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Step 2 Sharp increase in leisure time after Retirement

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Step 3 Failure to anticipate actual monthly hobby costs leads to financial plan collapse

Problem

When people aged 55–62 plan to seriously take up hobbies like golf, hiking, fishing, photography, or pottery after Retirement, they underestimate the actual monthly costs — equipment, memberships, lessons, transportation, and consumables. For golf, they only think about green fees, but the real cost including driving range, rounds, transportation, and meals runs $600–1,125/month (~80–150만원). It's common for financial plans to fall apart within 6 months of Retirement.

Solution

Detailed cost simulation for 20+ hobby categories (golf, hiking, fishing, photography, pottery, tennis, etc.) covering initial investment + monthly maintenance, broken down by item: (1) Select hobbies + enter location, (2) itemized cost breakdown (equipment/lessons/transportation/consumables), (3) hobby combination recommendations that fit the user's monthly budget.

Target: Ages 53–62, 1–3 years before or just after Retirement, planning to start new hobbies, monthly leisure budget $375–1,500 (~50–200만원)

Revenue Model: Basic simulation Free, 'Real Cost by Hobby Report' PDF $2.90 Per Transaction (~3,900 KRW), hobby class/equipment discount partnerships

Ecosystem Role: Supplier

MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty

3.0/5

U Urgency

2.0/5

M Market

3.0/5

R Realizability

5.0/5

V Validation

3.0/5

NUMR-V Scoring System

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.

SaaS N=.15 U=.20 M=.15 R=.30 V=.20 Senior N=.25 U=.25 M=.05 R=.30 V=.15

Feasibility (78%)

Tech Complexity

34.7/40

Data Availability

23.3/25

MVP Timeline

20.0/20

API Bonus

0.0/15

Feasibility Breakdown

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.

Market Validation (54/100)

Competition

8.0/20

Market Demand

6.2/20

Timing

14.0/20

Revenue Signals

9.0/15

Pick-Axe Fit

7.5/15

Solo Buildability

9.0/10

Validation Breakdown

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.

Technical Requirements

Frontend [low] Backend [low] Data Pipeline [medium]

Dashboard