when-where-what-database app for iPhone and iPad

4.8 ( 928 ratings )

Education Reference
Developer: Hiroe Oshimura

Free

Current version: 1.1.0, last update: 3 months ago
First release : 23 May 2024
App size: 42.48 Mb

"四次元年表" is a project where users collaborate to build a database that encompasses all historical events, from the origins of the universe to the endless "now", regardless of the field. It aims to accurately display both temporal and spatial distances by making "where" as important as "when".