EastmarkHK Snowball

A cross-platform compound-interest calculator for iOS, Android, macOS, and Windows. Enter an initial investment, annual rate, term, and compounding frequency — with optional monthly or annual contributions — and instantly see the final balance, total interest earned, a year-by-year growth chart, and a full breakdown table. Every result can be exported as a formatted, printable PDF report. The entire interface translates itself into 55+ languages on demand, using Apple's on-device Translation framework where available, so you can work in whatever language you prefer.