travelpreview
How to Track Travel Expenses Without the Hassle
Tracking expenses while traveling is a mess — currency math, lost receipts, no Wi-Fi. Here's how to do it without the hassle.
Blog
Privacy, travel finance, and building Gastos.
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.