#savings hackathon ideas

8 ideas across 2 categories · 4 beginner · 3 intermediate · 1 advanced. Sorted by judging fit (editorial estimate).

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Fintech
Card Reward Optimizer
Tells you which card to use at checkout for the best rewards
Intermediate12h1–2
Next.jsPostgresLLM
17/20
Fintech
Gig Income Smoother
Turn uneven gig income into a steady weekly paycheck
Intermediate14h1–2
Next.jsPostgresCharts
17/20
Fintech
Bill Negotiation Coach
Get a script and practice partner for lowering your bills
Beginner8h1
LLMNext.jsSpeech API
17/20
Fintech
Remittance Fee Comparator
Compare the real cost of sending money home including FX markup
Intermediate14h1–2
Next.jsFX rate APICharts
17/20
Web3
Onchain Savings Circle
Run a rotating savings circle with transparent rules in a smart contract
Advanced26h2–3
SolidityFoundryWagmi
17/20
Fintech
Goal Savings Jars
Split savings into visual jars for goals like a laptop or trip
Beginner8h1
Next.jsLocal storage
16/20
Fintech
Teen Allowance and Chores App
Teens earn allowance by chores and learn to budget with parent oversight
Beginner10h1–2
Next.jsSupabase
16/20
Fintech
Round-Up Savings Simulator
Shows how spare change could fund a real goal
Beginner12h1–2
ReactCharts
14/20

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