Kyte POS: Inventory and Sales app reviews

I'm from Malaysia. I subscribed to Pro version after an hour of experiencing on how to navigate this app. This app has everything we need as a startup, Product Cost, selling price, inventory value, assess level to different sales person, online catalogue, able to integrate with FB/IG. What else do we need? I would like to request a promotion tab for us as a seller, as I need to spend some time to key in the discounted amount and I have many products to key in discount amount.