Net Pay — Multi-Country Salary & Finance Calculators

You get a job offer or a raise, and the first question is always the same: what actually lands in my account? Tax rules differ by country, change every year, and most calculators are either US-only, bloated with ads, or force you to create an account.

Net Pay is a web and iOS app of fast, no-signup financial calculators — salary/take-home, loans, and savings — localised for the UK, US, Australia, Germany, and Ireland. You put in your numbers and get real-time, country-specific results with a clean UX and no account required.

The whole idea: know exactly what lands in your account, in seconds.

Solo, end to end — same as PetEats. Product thinking, architecture, frontend, backend, iOS release, and ongoing maintenance.

Next.js frontend for the web app at netpaytoday.com

Python + FastAPI backend handling country-specific tax logic and calculations

Native iOS app available on the App Store

Multi-country tax rules for 5 jurisdictions, kept up to date

3,100+ unique visitors per month organically — no paid ads, no marketing spend, just search traffic. Both the web app and the iOS app are live and publicly available right now.