Vault-Budget, zero-knowledge budget manager

Zero-knowledge
AES-256 encryption
Argon2id on-device
Offline-first
Open contracts

Your entire financial life, end-to-end encrypted.

Checking, savings, crypto, real estate, invoices, receipts, everything passes through your key alone. We only ever see cryptographic noise.

Your data is unstealable, even if we get hacked.

Two distinct keys: a password to sign in to your account (stored on our side as a one-way bcrypt hash), and a passphrase that encrypts your data and never leaves your device. If our servers were breached, an attacker only gets cryptographic noise, nothing readable to steal.

Every account, with no bank connected.

Multi-currency, crypto, real-estate net worth, B2B folders, family vault. One vault, distinct profiles. CSV / OFX / PDF imports, you stay in control.

Budgets, forecast, simulations, without a forced cloud.

Envelope budgets, 12-month forecast, loan simulations, future events. Everything computed locally. Multi-device sync is optional, anonymous, end-to-end encrypted.

Ready in under a minute.

Download, pick a passphrase, your vault is live. No KYC, no bank to link, no waiting list. Your money stays yours.

AES-256 Protection

0%

The vault is physically stored on your device, tamper-proof.

Passphrase required...

Secure space active

Your local instance is unlocked. You are now inside the vault.

Access Dashboard

One engine, three views.

Vault-Budget doesn't just show a balance. It gives you the accounting truth, your bank's snapshot, and the future, all at once, on every account.

Triple real-time tracking

Cleared, actual, forecast: three balances recomputed on every transaction. No more end-of-month surprises.

Cleared
4 250 €
Actual
3 890 €
Forecast
2 100 €

Encrypted receipts

Scan your tickets, import your invoices. Everything is OCR'd locally then encrypted in your vault. Nothing leaves your device.

Multi-asset vault

Checking, savings, crypto, real estate, B2B. 31 currencies, automatic conversions, live valuation.

The complete offline-first alternative

Envelope budgets, 12-month forecast, loan simulations, panic mode. Everything works offline, and multi-device sync is optional, anonymous and encrypted.

Built to know nothing about you.

Every line of Vault-Budget code starts from one principle: your financial data is none of our business. Six technical guarantees prove it.

End-to-end zero-knowledge

Your data is encrypted on-device before anything else. Our servers only ever see cryptographic noise, keys, labels, amounts, all of it.

Offline-first, optional sync

The app runs without a connection. Multi-device sync is optional, end-to-end encrypted, anonymous, our servers only see cryptographic noise. Available from Vault+.

Your data is yours

Portable .vault-budget export anytime. No lock-in. You leave, you take everything, receipts included.

Plausible deniability

Panic mode with a decoy passphrase: opens an empty vault under duress, without revealing the real one exists.

Automatic lockout

Idle, sleep, tab close, the vault locks itself. WebAuthn or PIN to reopen, never a stored password.

No tracking, no third-party analytics

No Google Analytics, no ad cookies, no Facebook pixel. Our only metrics are anonymous and opt-in.

One vault. Many lives.

Vault-Budget adapts to your situation, personal or pro, solo or family, freelancer or multi-business.

Personal

For demanding individuals

  • Monthly envelope budgets with automatic rollover
  • 12-month forecast, anticipate every due date
  • Shared family vault with roles and permissions
  • Multi-currency and crypto with live valuation
Freelancers & small businesses

For pros who want full control

  • Isolated B2B vault: VAT, reconciliation, period closing
  • Accounting-grade PDF + ZIP export, ready for your CPA
  • Immutable, cryptographically signed audit journal
  • Multi-folder, one profile per business activity

Transparent pricing.

Start for free. Upgrade to Vault+ or Vault+ pro when you need more power.

Monthly
Annual-25%

Free

Everything you need to manage a personal budget securely.

0 €

/ forever

  • Up to 2 banks
  • CSV / OFX import
  • Local AES-256 encryption
  • Categories & subcategories
  • Basic envelope budgets

Vault+

For those who want to sync across devices, manage receipts, and export cleanly.

/ year
  • Everything in Free, plus:
  • Encrypted multi-device syncWeb, iOS, Android — client-side encrypted, zero-knowledge
  • Unlimited banks
  • Expense receipt management
  • Automatic import rules
  • Structured ZIP & PDF exports
  • Advanced bank reconciliation

Vault+ pro

For freelancers and those who want total control.

/ year
  • Everything in Vault+, plus:
  • B2B vault & pro accountingFactur-X (FR), FatturaPA (IT), XRechnung (DE), SAF-T (PT) and more
  • VAT calculation, reports & filings
  • Automatic payment reconciliation
  • Secure period closing
  • Audit log
  • Priority support

Single annual payment, no surprise renewal.