Tired of finance apps that
waste your time?
You're not trying to figure out where your money went. You already know how to manage it. You just want to see if you're on track.
Track every coffee purchase
Spend 30 minutes a week categorizing transactions just to see a number you already know.
Hand over your bank login
Trust a third party with credentials to every account you own. What could go wrong?
Learn complex budgeting
Master envelope budgets, categories, and rules. Because you definitely have time for that.
You don't have a spending problem. You have accounts in three countries and 20 minutes a month. There's a better way.
Three steps. Five minutes. Done.
Snapshot your accounts
Every two weeks (or whenever you want), open the app and type in your current balances. No bank connections. No transaction imports. Just simple numbers.
We do the math
Fatstack converts everything to your base currency using real exchange rates from that exact date. Accurate. Automatic. Archived.
Total
$41,200
Watch your wealth grow
See your trajectory, track progress toward goals, and export your data anytime. The only number that matters: Are you going up?
Built for real life
For people with international accounts, busy schedules, and better things to do than categorize transactions.
5-minute updates
Update your net worth in less time than your morning coffee. Built for busy people who value their time.
100% private
You enter numbers, not credentials. We can't access your accounts even if we wanted to.
Multi-currency native
Track unlimited accounts in any currency. Automatic conversion with real historical rates.
Clarity over complexity
Point-in-time snapshots cut through the noise. See what actually matters.
Stupid simple
If you can use a calculator, you can use Fatstack. No tutorials, no setup wizards.
Your data, your control
Export everything anytime in CSV. No lock-in, no proprietary formats.
Built for people like you
The global professional
Sarah, Software Engineer
Accounts in US, UK, and Germany
"I work remotely and get paid in USD, but I have savings in EUR and GBP. Finally, an app that doesn't treat multi-currency like a bug."
The privacy-conscious
Marcus, Security Consultant
6 accounts, zero bank connections
"I'm not giving Plaid or anyone else access to my accounts. Fatstack lets me track everything without compromising my security posture."
The busy investor
Jennifer, Freelance Designer
Tracks savings, crypto, and investments
"I don't need to know where every dollar went. I need to know if my net worth is growing. Five minutes every two weeks? Perfect."
The expat
David, Marketing Director
Living in Singapore, accounts everywhere
"Between my US checking, Singapore savings, and European investments, I had no idea what I was actually worth. Fatstack made it crystal clear."