Henning Richter

simple learning is a sophisticated and easy to use learning app for your own educational content such as vocabularies, definitions, synonyms, or techn …

simple learning is a sophisticated and easy to use learning app for your own educational content such as vocabularies, definitions, synonyms, or techn …

A simple calculator for hourly wages including a timer function. Hourly rate, VAT and duration are configurable.免費玩Wage Calculator APP玩免費免費玩Wage Calcu …