Fintech
Personal Finance Insights
Shows spending patterns and simple saving suggestions
Intermediate24h1–3
ReactChartsLLM
16/20Subscription Leak Finder
Finds forgotten recurring charges in a bank statement.
Beginner12h1–2 people16/20 fit
Build Subscription Leak Finder for anyone with a bank statement in ~12h with 1–2 people. Stack: Next.js + CSV parser + Charts.
Why it wins: Everyone has this problem; the yearly number hits hard.
Build flow
01 · Problem
Small forgotten subscriptions quietly drain money every month.
02 · Solution
Upload a statement CSV. Detect recurring charges and show the yearly cost of each.
03 · Build
- 1Parse statement CSV
- 2Group by merchant + interval
- 3Yearly totals
- 4Results UI
04 · Demo
Upload a sample CSV → list of recurring charges → big yearly total.
MVP checklist
- CSV upload
- Recurring charge detection
- Yearly cost view
- Cancel checklist
Tech stack
| Tech | Role | |
|---|---|---|
| Next.js | Frontend + API routes | Web |
| CSV parser | Data import | Data |
| Charts | Data visualisation | UI |
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