A simple and easy to use data collection and visualization platform.
Visit the official Koishi website: koishi.nechapu.to
Koishi documentation: Docs on Notion
The whole project is opensource - check the other parts of koishi:
Koishi API - the REST API behind Koishi
Koishi mobile - an Android app for Koishi
You can either use the official Koishi severs at koishi.nechapu.to, or install Koishi on-premise.