Sorry to hijack a bit here, but have any good links to open source baby tracking apps that allow sharing between partners? The popular options out there on the app stores are a privacy dumpster fire.
If you're up for self-hosting, there's BabyBuddy[0]. There's no first-party native app, but it is a decent web app and there's some third-party apps/integrations. And of course, multiple users is a priority. No affiliation, just a user :)
I used this for our newborn recently and was very impressed with how flawlessly the partner sharing worked - https://mangobaby.app It is not open source. But didn't look suspicious like the other apps on the store. The privacy labels on the iOS App Store seemed acceptable too (for us).
https://eukiapp.org/