BrightComb

Small, honest digital tools for decisions people otherwise make on gut feeling. Built by one person, no ads, no data brokering.

Honeycomb Investment Simulator

Compound interest, Monte-Carlo and real returns after tax, with market data for the US, UK and Europe. Free basics.

Plan German parental allowance (Elterngeld) optimally: tax class, months, deadlines and the application, as a personal plan.