ballban Tools

Small browser tools. Everything runs locally in your browser.

FFmpeg Command Builder

Build copy-ready FFmpeg commands without uploading any video.
Mortgage vs Investment

Compare buying a home with renting and investing the difference until the loan is paid off.
Buy vs Rent in Japan (35-Year Simulation)

Alternative version of the buy-vs-rent simulation for Japan.
Work Motivation Generator

Live earnings ticker with after-tax income calculation for China and Japan.