I built Steward in December 2021 with a cross platform mobile app and website written with Ionic and React that works both locally and with a connection to the server, and a NodeJS server. Steward uses MongoDB to store cloud users' data. Households' data is encrypted throughout with an encryption key that is shared with end-to-end encryption whenever a new device is added. This means that even the server cannot read sensitive user data.
While the app never made it to the app store, I've linked demo clips and the source code.