PennyTogether Featured
2026
A household finance app for planning spending together, across personal and joint accounts.




- The problem
- Couples split money across personal and joint accounts, so nobody sees the whole household picture or a shared plan.
- How it works
- A Next.js front end and NestJS API run on PostgreSQL. CSV imports and Plaid-linked accounts become transactions scoped to a household, and the database itself enforces that isolation through separate roles. Merchant rules categorize spending, the monthly plan compares it against targets, and accounts are protected with MFA and encrypted secrets.
- CSV import that keeps the original rows, skips duplicates and auto-categorizes with merchant rules
- Monthly spending plan with category drill-downs, bulk edits, audit history and spending insights
- Bank linking through Plaid, with MFA, encrypted secrets and database-level isolation per household
Next.js, NestJS, PostgreSQL, Prisma, Plaid
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