Avero
7.9#1 in restaurant analytics softwareFrom $300 a yearFree planAndroidiOSWebAPI
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Avero suits restaurant, hotel outlet, casino, nightlife, and larger food-and-beverage operators who want to analyze POS, sales, staffing, or labor data. Its multi-location reporting and business intelligence options may also suit groups working across several locations.
You want what its maker publishes above — check its page for the details.