Hi, I am making an app for the first time, and I am hoping to make a multiplatform app. The purpose of the app is to store a list of datetimes, along with a bit of data about each datetime (eg: {date: 2024-03-02T013042, sighting: RED, notes: 'very small'}). This list should be available offline and backed up to the cloud. What would be the best database/method for this? If you have any other advise for me, I would also be grateful.