Spend smarter. Save automatically.
ExpenseAI categorizes your transactions with Gemini, spots bill spikes before they hurt, and rounds up purchases into a self-custody savings vault on Mantle. Zero spreadsheets. Maximum calm.
What makes ExpenseAI different?
Real user problems, solved with AI + on-chain automation.
AI Categorization
Gemini classifies transactions into Food, Travel, Bills, Shopping & more—no manual tags.
Bill Spike Alerts
Detects when recurring bills jump >20% and suggests fixes before the due date.
Smart Micro-Savings
Rounds up purchases and auto-deposits to your Mantle vault—saving without thinking.
Self-Custody
Funds stay in your vault contract—transparent, auditable, and in your control.
Privacy-First
No public feeds, no salesy spam. Your data stays with you.
Hackathon-Ready
Simple stack: Next.js, Gemini, ethers.js, Mantle Sepolia Testnet. Deploy in minutes.
How it works
Connect wallet
Use MetaMask on Mantle Sepolia Testnet. Your vault lives on-chain.
Paste transactions
Import or paste JSON. Gemini auto-categorizes and finds bill anomalies.
Save round-ups
We compute round-ups and deposit into your vault in a single click.
“ExpenseAI is like having a nerdy friend who hates waste and loves saving you money.” — Early tester
FAQ
Do I need real money?
No. It runs on Mantle Sepolia Testnet. You can get test MNT tokens from a faucet.
Where is my data stored?
Transactions you paste are processed in your browser + our API; nothing is shared publicly.
Is this NFT-based?
No NFTs. Pure on-chain vault + AI agents.