02Own
Fond
Privacy-first personal finance app inside Telegram: income and spending, debts with payoff estimates, savings vaults with goals, and recurring subscriptions with payment reminders — protected by a client-side recovery key.
Contribution
- Designed and built end to end: NestJS backend, Next.js Telegram Mini App, PostgreSQL with Prisma, Redis.
- Client-side encryption with per-device recovery keys, including full data wipe.
- Subscription tracking with payment reminders, savings vaults with goals, debts with payoff estimates, and multi-currency support.
- Monetization with Telegram Stars and referral discounts.
Preview
1 screen