A household hub grew from problems we had ourselves
When my wife and I moved in together, every period tracker charged $40/year and sold the data. Nothing handled the rest of the household either - groceries, expiry dates, and shared reminders. So I built Grovely.
Every problem we ran into became a feature. Period notes that only one partner can read. Pantry items that suggest an expiry date from the last time you bought them. Notifications that fire at the right local time even if you self-host in a different timezone. There is a lot more we want to build.