Looking for a self-hosted period tracking app with companion android app. Have done literally zero investigation at this point but it’s on my todo.

Gotta agree. Even better if backed by zfs.

Use zfs, raid 10 the big drives, toss the 8tb, and use the ssd as a write cache.

Gnucash books split for personal, joint, and business with a mysql backend. I wrote a read-only web frontend for wife and OTG access. Sadly no automation so I just stay on top of it.