Categorising bank transactions without a server
How Ahorreo categorises every imported transaction with a fixed order of rules on your device, says who decided each one, and never undoes your corrections.
Money & privacy
How Ahorreo turns the statements your bank already gives you into what you earn, spend and own, without a server. Why a salary paid on 1 March belongs to February, how a joint account counts towards your net worth, and why every amount is stored as integer cents.
Also how we check the privacy claim instead of only making it: a Content Security Policy, a test that fails if a network call appears outside a short allowlist, and the one kind of request Ahorreo can make, off by default: the ECB's exchange rates and Euribor series.
Projects: Ahorreo, Mortgage calculator
Privacy You Can Test: How Ahorreo Enforces Zero Network Calls
A privacy policy is a promise. A Content Security Policy, an automated network test and an opt-in switch are enforcement. How Ahorreo makes 'your data never leaves your device' something you can verify.
Booking Date vs. Accrual Period: When Did You Really Earn It?
A salary paid on March 1st belongs to February, and a card purchase on March 28th is March spending even if it's charged in April. How Ahorreo separates the bank's date from the month a transaction belongs to.
Household or My Share? Measuring Net Worth With Shared Accounts
A joint account at 50% shouldn't count in full towards your net worth. How Ahorreo models ownership as a percentage on accounts, homes and mortgages — and why every figure needs to say which base it's on.
Why Money Should Never Be a Float: Integer Cents in Ahorreo
0.1 + 0.2 is not 0.3 in JavaScript. Here's why Ahorreo stores every amount as integer minor units inside a Money type, refuses to add two currencies, and parses '1.234,56 €' without guessing.
Introducing Ahorreo: Personal Finance That Never Leaves Your Browser
Meet Ahorreo, Vedratic's local-first personal finance app. Import the statements your bank already gives you and see what you earn, spend and own — with no server, no account and no bank credentials.
Other lines
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