Zero-knowledge personal finance
A private place for your whole financial life — multi-currency vaults, budgets, savings and portfolios. Encrypted on your device, so only you can read it.
No ads. No data selling. Your keys never leave your device.
Most finance apps read everything you do and monetize it. Plenith can't. Your amounts, balances and notes are encrypted on your device before they're ever sent — our servers only store ciphertext, and we don't hold the keys. Privacy isn't a setting here; it's the architecture.
Your data is sealed locally with a key derived from your passphrase.
We only ever see ciphertext — no amounts, no balances, ever.
Export or delete everything at any time. No lock-in.
Built for real life across currencies, people and goals.
Organize money into vaults in EUR, USD or ARS — each with its own currency, converted only on your device.
Set budgets per category, one-off or recurring, and watch progress as you spend.
Track net contributions and profitability over time, with live crypto and stock prices.
Split expenses with a partner or housemates — invite by email, set contribution shares.
Automate rent, salary and subscriptions, and get amount-free reminders when they're due.
Add Plenith to your home screen for a fast, full-screen experience.
It never leaves your device and isn't your login password. It unlocks your data here.
Every amount and note is sealed on your device before it syncs.
We store and sync only encrypted blobs across your devices — unreadable to us.
Free to start. Your data, encrypted and yours alone.
Get started — it's free