Vault
Your Financial Overview
Everything in one place. Your data stays on this device only.
End-to-end private — stored on this device, never on a server
01
Net Worth
Know exactly what you're worth today and tomorrow. Track every account, asset, and investment in one place.
02
Spending
Log income and transactions. See exactly where your money goes — and how much you have left this month.
03
Financial Plan
See your FIRE date, build a budget, and model big decisions — like what happens if you invest an extra £200/month.
04
Tax Planning UK
Don't pay more Capital Gains Tax than you have to. Track your gains and know your position before the deadline.
Help Vault grow
Send this to one friend.

Vault is free, private, and spreads by word of mouth. If you've found it useful, share the link with one person who might feel the same. That's all it takes.

Total Net Worth
£0
1M 3M 6M YTD 1Y All
All
Current
Savings
Investments
Crypto
Credit
Loans
Pension
Property
Your accounts
All
Personal
Joint
Your share
100% · Full
50% · My half
Showing all accounts
Contributions
£0
Money Out
£0
All
Income This Month
£0
+ Add Income
Remaining
£0
Daily Allowance
Log a transaction Amount · category · date
£
This transaction will log automatically each month.
↻ Saved and set to repeat monthly
This month
Calculators
FIRE & Salary

Two calculators to help you understand where you stand and where you're headed. The FIRE Calculator shows how long until your savings can replace your salary — enter your numbers and let it project your financial independence date. The Salary Calculator breaks down your take-home pay after UK tax, National Insurance, and pension contributions.

£
£
£
Reflects current high street savings accounts and cash ISAs. Choose this if your money stays in savings rather than being invested in the stock market. Lower risk, lower reward.
Cash / Savings
4%
High street savings & cash ISAs
Reflects a cautious investment portfolio weighted toward bonds and stable assets. Suitable if you are close to retirement or have a low appetite for risk.
Conservative
6%
Cautious portfolio, bonds-weighted
Close to the long term historical average of a globally diversified index fund portfolio. A reasonable assumption for most people investing in stocks and shares over 10 or more years.
Moderate
8%
Balanced index fund, historical avg
Reflects a high equity, growth-focused portfolio. Achievable over long periods with a globally diversified all-equity strategy but comes with significant short term volatility. Only suitable for very long time horizons.
Aggressive
11%
High equity, global stocks, long horizon
This affects how fast your savings grow on the way to your FIRE number. Your withdrawal rate is set separately above.
Cautious
I want my money to last indefinitely, even in bad markets.
Balanced
The classic FIRE approach, proven over most 30+ year retirement periods.
Flexible
I am comfortable adjusting my spending if markets underperform.
Fill in your numbers above — Vault will calculate your FIRE number and project your freedom date in real time.
You need
£—
to retire
Freedom date
Lean FIRE
Covers essentials only
Your FIRE
Your chosen lifestyle
Fat FIRE
Comfortable with extras
What if…
Budget Planner
Build a monthly budget using proven frameworks — 50/30/20, zero-based, or custom. Create as many plans as you like and compare them.
My Plans
Financial Storyteller
Pick a scenario, fill in your numbers, see what happens.

Model what different financial decisions could mean for you in real numbers. Pick a scenario below, fill in your figures, and see the outcome. From compound investing to paying off debt to buying a house — the numbers often surprise people. Save any scenario to come back to it later.

Quick Tools
Fast mental-maths helpers for everyday money decisions

Two lightweight calculators for quick decisions. Use Cost Per Use to reframe a purchase price as a cost per use — it changes how expensive something actually feels. Use Savings Goal to find out how many months it will take to save for something specific, with or without interest.

Cost Per Use
Reframe one-time costs as long-term value
Item cost
£
Target/use
£
Uses/month
Enter cost & target per use
Savings Goal
How long will it take?
Goal
Target
£
Monthly
£
Saved so far
£
Growth rate
%
Enter a target & monthly amount
Entry
Settings
Theme
Light
Dark
Midnight
Display Currency
All totals and summaries display in this currency. Individual accounts can use a different currency and will be converted automatically.
Loading rates…
Track how much of your annual £20,000 ISA allowance you have used. Enter the total you have deposited into ISAs this tax year (6 April – 5 April).
Deposited this tax year
£
Show a tip when I open Vault
A new tip every time you load the app. You won't see the same one twice until you've seen them all.
Holding
Loading tax planning…
About this section

Crypto, alongside the rest of your money

Track on-chain balances and activity in the same place as your bank accounts, savings, and investments. Wallet values flow into your Net Worth, swaps and payments appear as spending in your normal categories, and staking income is logged so you have a record for tax.

Work in progress SUI is supported today. More chains and automatic categorisation are coming.
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The Vault Philosophy

A quiet place to see your money.

Vault exists because personal finance tools are either too shallow to be useful, too intrusive to be safe, or too expensive to be fair. This is the version I wanted to use myself — private, honest, and built to make you better with money, not more dependent on an app.

Your data, your choice

Two ways to store your data. Both private. You pick.

Most finance apps make the choice for you — they hold your data on their servers and ask you to trust them. Vault doesn't. You pick how it's stored, and either way nobody but you can read it.

Local Storage

Stays on this device.

Data lives entirely in your browser's local storage. It never leaves the device, never touches a server, and is invisible to Vault. No sign-up, no account, no password — open Vault and start.

The trade-off: no cross-device sync, no automatic backup. If you clear your browser data, the data is gone. Export a backup from Settings to keep a copy.

  • No sign-in required
  • Nothing ever leaves your browser
  • Works fully offline
  • Manual backup via export
  • No cross-device sync
Private Cloud

Encrypted, yours, everywhere.

Sign in with Google. Your data is encrypted in this browser with AES-256-GCM before it leaves the device, then stored as opaque encrypted bytes on Walrus — a decentralised storage network on the Sui blockchain.

Sign in on any device with the same Google account and your data appears. The encryption key is derived from your Google identity and never leaves your browser. Vault itself cannot read your data — the privacy guarantee is cryptographic, not a promise.

  • Sign in with Google — no crypto needed
  • Encrypted in your browser, end to end
  • Stored on Walrus (decentralised)
  • Syncs across all your devices
  • Vault still can't read your data

Switching is a one-click choice in the welcome modal or the Account section of Settings. You can move from Local Storage to Private Cloud at any time and your existing data comes with you automatically.

FAQ

Common questions about Private Cloud.

What is Walrus and why does Vault use it?

Walrus is a decentralised storage network built on the Sui blockchain. Files are stored as encrypted blobs across many independent nodes — there is no single server holding your data and no central point of failure. Vault uses Walrus instead of a traditional cloud database because the storage is independent of any one company, censorship-resistant, and verifiable. The Walrus nodes can see that something is stored, but never what.

How is my data protected in Private Cloud mode?

Four links in the chain, all of which must hold for your data to be readable: (1) Your data is encrypted in this browser using AES-256-GCM before any upload — only the encrypted bytes ever leave the device. (2) The encryption key is derived from your Google identity via PBKDF2-SHA-256 with 600,000 iterations and lives only in browser memory; it is never persisted or transmitted. (3) The encrypted blob is stored on Walrus. The blob's contents are opaque to every node, to Walrus itself, and to Vault. (4) On sign-in, the same Google identity re-derives the same key, downloads the blob, and decrypts it back in the browser. Nobody between your screen on Monday and your screen on Tuesday can read a thing.

Can I access my data on multiple devices?

Yes. Sign in with the same Google account on any device — laptop, phone, tablet, work computer — and Vault pulls your data down, decrypts it locally, and you're up and running. Changes made on one device sync to the others automatically (typically within 30 seconds while a tab is open).

What happens if I sign out?

Local data on the device is wiped — no leftover trace. The encrypted blob remains safely on Walrus, keyed to your Google identity. Sign back in (on this device or any other) and your data reloads from Walrus, decrypted in the browser. If you want a copy on disk independent of Walrus, export a JSON backup from Settings before signing out.

Do I need a crypto wallet or any crypto knowledge to use Vault?

No. Signing in with Google handles everything. Vault uses a technology called zkLogin to derive a Sui wallet address from your Google identity — automatically, behind the scenes. You never see a seed phrase, never hold a token, and never approve a transaction. The wallet exists only to provide cryptographic guarantees; you don't need to know it's there.

Is there a cost to using Private Cloud mode?

No. Walrus charges a tiny storage fee per save in WAL tokens. Vault pays this on your behalf out of a sponsorship wallet — you never need to hold any crypto. The free tier covers normal personal-finance use comfortably; there's no premium upsell behind any feature you've seen.

What happens if Vault shuts down?

Honest answer: the encrypted blobs on Walrus would still be there, but right now the pointer to your blob (the lookup from your Google identity → blob ID) is stored in Vault's own infrastructure. So if Vault disappeared overnight, recovery would require knowing the blob ID directly. This is something I'm actively working to fix by moving the blob-ID pointer on-chain (see roadmap below). Until that lands, the safest thing is to export a JSON backup from Settings periodically — it works as a complete safeguard regardless of what happens to any single piece of infrastructure.

Why Vault is free

Because the price of "free" finance apps is usually your data.

Most finance apps monetise by either selling your transaction data to third parties, locking the genuinely useful features behind a subscription, or nudging you towards partner products that pay them referral commissions. Every one of those incentives points away from your actual financial wellbeing.

Vault is free because it is designed to be free. There is no server holding your data — so there is nothing to sell. There is no paid tier — so there is no feature held hostage to push you into a subscription. There are no referral partners — so no one is paying Vault to funnel you anywhere.

The thing you get for nothing is the thing itself: a clear, private view of your financial life.

The vision

Nobody should go without the financial education they need to live a life on their terms.

The gap between people who are good with money and people who are not is mostly a gap in access — to advice, to tools, to the simple frameworks that a financially literate adult takes for granted. That gap is intergenerational. It is unfair. And it is completely fixable with good software.

Vault is a first step. A free, private tool that anyone can pick up and use to see their full financial picture, model their future, and stop being surprised by money. The goal is not to become another finance app. The goal is to be the one that gets this right — and, over time, to make it useful in enough countries and for enough situations that it becomes the obvious place to start.

That is going to take help. Which brings us to the next section.

How to use it

The short version.

Add your accounts under Net Worth. Log your spending and income under Spending. Use Planning to model the big decisions — buying a house, cutting expenses, retiring early. Use Tax to understand your CGT position before you sell anything. Use Crypto to bring your on-chain balances into the same picture.

The first time you open Vault, the welcome tour will walk you through the core flow end to end. You can restart it any time from the button below.

The principles behind it

What Vault tries to teach by using it.

Good personal finance comes from a small set of ideas that compound over decades. Vault is built around these rather than around vanity metrics.

Pay yourself first
Move money to savings and investments the day it lands — before you spend anything. Your future self is the most important bill you pay each month.
Know your number
Your net worth is your financial scoreboard. Most people never check theirs. Tracking it over time is the single most useful habit in personal finance.
Spend deliberately
You don't need to budget down to the penny. You do need to know what you are actually spending on, so the leaks are visible before they become habits.
Tax is a lever
ISAs, pensions, and CGT allowances are free optimisation that compound enormously over a working life. Use them on purpose, not by accident.
Time, not timing
Long time in the market beats trying to time it. Vault's scenarios show you what an extra ten years does to your number — it is usually shocking.
Make it boring
The best financial plans are dull on purpose. Automate contributions, ignore noise, check in monthly, repeat for thirty years.
Roadmap

What's next, and why it's gated on you.

Building the next layer of Vault — encryption, real accounts, open banking — is expensive work. I want to do it if Vault turns out to be something people actually use and recommend. Right now, the beta is the test. The things below get built when enough people have tried Vault, kept using it, and told friends about it.

Live now
Local-only personal finance
Net worth, spending, planning, tax, and crypto — all private on your device. Works offline after first load.
✓ Live
Encrypted cloud backups
Your data is encrypted in the browser and stored on Walrus — a decentralised storage network. Vault cannot read it even if it wanted to.
✓ Live
Optional private cloud accounts
Sign in with Google to enable cross-device sync. End-to-end encrypted, keyed to your Google identity. No crypto knowledge required.
Up next
On-chain blob ID storage
Move the lookup from your Google identity to your blob ID on-chain, so your data is fully independent of Vault's own infrastructure. If Vault disappears, you still have your data.
Up next
Mobile optimisation & app
A native-feel mobile experience for the daily transaction logging that makes Vault actually stick, plus iOS / Android apps for offline use and home-screen access.
Up next
Bank statement PDF scanner
Drop in a bank statement PDF, Vault extracts the transactions, categorises them, and adds them to Spending. Still processed locally — no statements sent to any server.
Later
Open banking (UK)
Automatic transaction import from UK banks via open-banking APIs. Still stored locally on your device. Only if users want it.
Later
More countries
Tax rules, ISA/pension equivalents, and mortgage logic localised for other major markets — starting with the ones readers ask for most.
Later
Crypto page with multi-wallet support
Track multiple wallets across chains, with swaps and payments auto-classified into your normal spending categories.
We need testers

Vault is in early beta. Your feedback is the thing that shapes what gets built.

There is a long roadmap above, but the honest truth is that none of it happens without real users telling us what works, what is broken, and what they wish Vault did. If you like what you see, the single most useful thing you can do is use it for a month, then tell us what you hit.

Bugs, confusing copy, missing features, things that felt good, things that felt bad — all of it goes to the form below and I read every one personally.

Tell someone

If this is useful, the biggest help is a single share.

Vault has no marketing budget and no ad spend. Every new user shows up because an existing user said "you might like this" to a friend. If you can do that — one message, one link — it is genuinely the thing that keeps the project alive.

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