Solo developer and researcher. I build small, open-source, local-first tools and care about reproducible, privacy-respecting software. Always glad to compare notes with other builders.
github.com/riponcm
Gemtype is a grammar and spelling checker tool that is more advanced than Grammarly. We know students and the public want to save money instead of paying for expensive monthly or yearly subscription packages just to check their grammar. It supports any Google-supported language. To use this tool, you just need a Gemini API key. Every Google user has one, and the free tier is enough for a single person to use for daily conversation. Your API key will be private; we don't have a server, so your data will not leave your machine. We don't track anything. If you have any questions or concerns, let me know; I will answer each one.
I have checked your app. The idea is great, but I feel the log-log plots and some scientific and engineering sheets will be helpful. By the way great work.