This project is interwsting my app is a TinyDB can i turn it into CloudDB?
Welcome hattie.
You saw Social Distancing ... a CloudDB / Location Marker Tutorial and asked can your Project use a CloudDB.
Probably yes. TinyDB is specific to your cell phone. A CloudDB is a similar key/value database that can be use by only a single user or multiple users to share data using wifi and share the identical apk file. TinyDB controls are similar to those of a CloudDB
As Steve mentions, it can be done. However, it's important to keep in mind that CloudDB operations are asynchronous since they require talking to a remote server. You will likely need to restructure some of your code when using CloudDB to take this into account as many TinyDB examples leverage the fact that TinyDB is local and thus operations complete immediately.