Vprok
Vprok is an online hypermarket, similar to Auchan, where you can order goods for the whole week, not just for one day and not just groceries. They have a very large selection of goods, so delivery takes 6-8 hours, unlike local stores that deliver in 2-3 hours. Vprok apps for iOS and Android have been downloaded over 2 million times.
Next, I will describe a task I worked on at Vprok. It covers some of the most important and frequently visited sections of the app.
Quantity discount feature
Exhisting mechanics
There was a switch on the product card. In the company, we called it a "Quant switch" or simply "Quants". In the example on the right, these are "1 pc" and "2pcs". These Quants made it possible to buy goods at a discount when buying more.
Problems
User interviews confirmed these problems:
Non-obvious counter behavior: The current counter implementation implicitly adds the quantity of goods equal to the selected quantum value instead of simply incrementing by one. This requires the user to remember this peculiarity.
Incorrect application of discounts: If the quantity of goods in the counter is a multiple of a larger quantum or exceeds it, but the user selects a smaller quantum, the discount is not applied. This is surprising and is perceived as a mistake.
Tasks
To develop a simple discount mechanics that applies from the specified quantity of goods.
Solution
The discount line moves to the counter, drawing attention to the fact that the discount has been applied.
Expected outcome
Users can easily understand how to apply the discount.
Users can understand how much of the product will be added to the counter.
Simplified application of discounts will increase the number of products sold.
The conducted interview showed that there were no problems with the perception of the discount.
Before. Quantums
After. Quantity discount
This feature was implemented into the application the way I designed it after I left the company. It was implemented gradually and for a long time, which certainly indicates that the function is complex but important since, despite this complexity, it was brought to the prod. But now the discount from the quantity is used for almost 1000 products.