An Open-Source, Flutter-Based Planetarium App

Stellarium is already the standard software for this, but it is complex and difficult to develop. The goal is to build it with Flutter and provide a Claude Code environment out of the box, creating a foundation that lets anyone easily make a planetarium app tailored to their own preferences.

Github
https://github.com/kenyasue/OpenPlanetarium

iOS
https://apps.apple.com/us/app/open-planetarium/id6799616519

Android
https://play.google.com/store/apps/details?id=agency.catsai.openplanetarium

Weather Forecast App for Astronomical Observation

I had been using several apps to check which of my saved locations would be clear and when, when the new moon would occur, and the likelihood of clear skies. This brings all of that together in one app. Surprisingly, nothing like it existed.

iOS
https://apps.apple.com/us/app/noctra-forecast-moonphases/id6804268969

Android
https://play.google.com/store/apps/details?id=agency.catsai.noctra