This iOS app enables service providers (e.g. restaurants or cinemas) to send a limited number of flexible short-term discounts to potential customers in their surrounding with limited validity. And the customers can see the available coupons and make a reservation. My task was to design both vendors and customers parts of the app. 
Vendors app
For this app I chose a brutal and crisp style. For headers I used masculine League Spartan font. There are only 2 colors: purple and black and minimum ornaments. I believed this fresh and simple design could help the app to stand out among other couponing apps.
When a vendor is creating a new campaign, they don't see a standard input form. Instead, I suggest them an interactive text describing how the campaign would work. They can tap on any parameter to change it.
Vendors app
Customers app
Customers see the coupons available in their area. They can view a coupon's details and reserve one:
Customers app
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