I ended up reaching a similar conclusion after I went looking for a todo app that suited my needs. I had very few requirements and I was surprised nothing satis

I ended up reaching a similar conclusion after I went looking for a todo app that suited my needs. I had very few requirements and I was surprised nothing satisfied them. I wanted something (1) that allows me to attach dates to tasks; (2) that lists tasks by date in a calendar; (3) that is local-only — not a web app, no cloud sync or anything, and not too many extraneous features. I couldn't find anything that met those criteria without also having a bunch of extra features and a subscription service tacked on, and eventually I just wrote a script for scraping a text file and printing out all the lines tagged with dates (e.g. @jun-10) in order. That's the only real functionality I needed that a text file can't satisfy on its own, and it's been working great so far.