Hi,
We have great experience to work with POS system.
Right now, we are developing one huge POS system following best POS applications (EPOS, LOYVERSE, SWOOPOS & STARBUCK).
We are doing both staff app & merchant specific customer App.
As per your need, you wish to have POS system for maintaining a single restaurant.
With our application, you could manage Sales, Revenue, Tax, Stock, Stock Alert, EOD, Petty cash etc all required features.
I could give you APK for testing.
Please ping me and get the best POS system.
Sorry to bid in higher rate than your expectation; But I know that no one could give you features in less than the price I bid. They will claim at the middle & they bid without having full knowledge about POS application.