B

Reward App Income Unified Ledger

3.40

Derivation Chain

Step 1 Reward apps like CashWalk quizzes gaining popularity
→
Step 2 Adults aged 40-60 use multiple reward apps simultaneously without tracking actual earnings
→
Step 3 When reward income exceeds 3 million won (~$2,250 USD) annually in miscellaneous income, comprehensive income tax filing becomes mandatory

Problem

Homemakers and retirees around age 55 simultaneously use 5-10 reward apps like CashWalk, Toss, and Liiv Mate, but cannot see a consolidated view of earnings, withdrawals, and expiration status across each app. In particular, if annual reward income exceeds 3 million won (~$2,250 USD) in miscellaneous income, comprehensive income tax filing is required — yet many miss this threshold and face penalty taxes, a growing problem.

Solution

Aggregates monthly earnings, withdrawals, and expired amounts from each reward app via manual input (or SMS notification parsing) and displays an annual cumulative income dashboard. Provides advance warnings when projected to reach the 3 million won (~$2,250 USD) miscellaneous income threshold, and auto-generates a comprehensive income tax filing guide.

Target: Ages 50-65, using 3+ reward apps, retirees or full-time homemakers, detail-oriented about managing even small amounts
Revenue Model: Free basic aggregation, tax filing draft generation at 9,900 won (~$7.50 USD)/year, referral fees for Tax Accounting professional connections
Ecosystem Role: Regulation
MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty
4.0/5
U Urgency
3.0/5
M Market
3.0/5
R Realizability
4.0/5
V Validation
2.0/5
NUMR-V Scoring System
N Novelty1-5How uncommon the service is in market context.
U Urgency1-5How urgently users need this problem solved now.
M Market1-5Market size and growth potential from proxy indicators.
R Realizability1-5Buildability for a small team with realistic constraints.
V Validation1-5Validation signal quality from competition and demand data.
Each dimension is scored 1-5 and weighted into grade S/A/B/C/D.
SaaS N=.15 U=.20 M=.15 R=.30 V=.20 Senior N=.25 U=.25 M=.05 R=.30 V=.15

Feasibility (76%)

Tech Complexity
34.7/40
Data Availability
21.7/25
MVP Timeline
20.0/20
API Bonus
0.0/15
Feasibility Breakdown
Tech Complexity/ 40Difficulty of core implementation stack.
Data Availability/ 25Practical availability and cost of required data.
MVP Timeline/ 20Expected time to ship a usable MVP.
API Bonus/ 15Bonus for viable public API leverage.
Total 100 points; below 50% is filtered out.

Market Validation (51/100)

Competition
8.0/20
Market Demand
6.2/20
Timing
14.0/20
Revenue Signals
7.5/15
Pick-Axe Fit
10.5/15
Solo Buildability
5.0/10
Validation Breakdown
Competition/ 20Signal quality from competitor landscape.
Market Demand/ 20Demand proxies from search and mention patterns.
Timing/ 20Fit with current shifts in tech, behavior, and regulation.
Revenue Signals/ 15Reference evidence for monetization viability.
Pick-Axe Fit/ 15How well the concept serves participants in a trend.
Solo Buildability/ 10Practicality for lean-team implementation.
Total 100 points; below 50 is filtered out.

Technical Requirements

Frontend [low] Backend [medium] Other [low]
Dashboard