Show HN: A tool for calculating MAU and DAU of subreddits

Hi! I built a tool for calculating the monthly active users (MAU) and daily active users (DAU) of subreddits:

https://subkpi.com

I mod a small subreddit and wanted to get some metrics to help me understand how fast the sub is growing, whether people engage, etc. I get to see the number of unique visitors from Reddit's dashboard, but not the number of users who post or comment. This web app considers the latter to be “active users”, a better measure of engagement, I think.

I decided to build my own tool to calculate these metrics, it's also another opportunity to improve my coding skills. It calculates both MAU and DAU for recent time periods (7dy, 1mo, 3mo, 1yr, ytd) and their evolution considering the data available to the app (data is downloaded from Reddit's public API, so it's subject to rate limits; everything happens on the browser).

I hope it helps other mods too!