This app is the client of a mac app https://apps.apple.com/us/app/id1372437743?mt=12
you can install it in the MacBook .and then set the MacBook s ip in this app.
it will show all the data on the MacBooks app. also can submit data to the MacBook server.
If you dontt want to install the MacBooks app . it default connect to a clound server is free to use.
connect to MacBookserver show data and submit data is fast then the default server.
1.inventory invoice
2.manage product sell purchase
4.manage shouldpay
5 trend
6.manage supplier customer