Blog

Privacy, travel finance, and building Gastos.

personal-financeinflationtracking

Your groceries got more expensive. So did everything else. Now what?

Prices are up everywhere — food, fuel, rent, delivery fees. You can't control that. But you can control how clearly you see your own spending. Here's how to start.

trackingpersonal-financeawareness

You Can't Improve What You Don't Track

Most people have no idea where their money actually goes. The research is clear on what changes when you start paying attention — and why awareness alone moves the needle.

privacyno-account

Expense tracking without creating an account

You don't need an email, password, or profile to track your expenses — here's how accountless expense apps work and why they make sense.

travelmulti-currency

How to track expenses while traveling

A practical guide to tracking travel expenses across multiple currencies — what to log, when to log it, and how dual-currency tracking keeps your spending clear.

behind-the-buildon-device-aiindie-dev

I built an expense tracker that runs entirely on-device

How Gastos uses Vision, Speech, and Natural Language frameworks to bring AI to expense tracking — without touching a server.

receiptson-device-aiprivacy

What your iPhone actually does when it scans a receipt

How on-device receipt OCR works on iPhone — no cloud upload, no server, just your phone's processor turning a photo into expense data.

privacylocal-first

Why your expense data should never leave your phone

What local-first means for expense tracking — and why keeping everything on your device makes the whole experience better.