Offline Power App

I'm looking for a solution to collect data offline on a mobile device, and upload the data when reconnected.

The key is I'd like to be able to connect to a data source (excel most likely, sharepoint list maybe), and be able to filter that data source and collect data on appropriate entries. The data base would have over 80,000 records.

For example, if I have a database that contains info for multiple Locations with Multiple Machines at each location, I want to filter on that for the location where I am located, and collect Observations on those machines, all while being offline.

Is Power Apps capable of something like this? Last I checked, it was tough to do offline. It doesn't seem like Forms is capable of connecting to an existing database in this manner.

Thanks for any tips