Mobile App UX/UI
Role: UI/UX designer for a B2B App BiSU BAYl
Client: Tek Tus Mobile
Istanbul, 2019
Context — A B2B mobile app for water suppliers in Turkey.
Challenge — BiSU's consumer app had modernised water ordering for millions of users — but supplier communication was still running on phone calls. The goal was to replace that with a real-time digital tool.
What I did — Defined the user flow, designed the full UI from sketches to high-fidelity prototype, built a component library, and supported user testing with a selected supplier group.
Outcome — Delivered a functional B2B app covering real-time order tracking, transaction reporting, pricing management, and direct communication.
About
It’s not safe to drink tap water in 187 countries in the world. As Turkey is being one of them, with no guarantee of clean tap water, the country is surrounded by a web of local/countrywide clean water supply agencies predominantly use phone order method to deliver bottled water to houses.
In 2015, BiSU App was launched to change this outdated phone order method to one-click-action from mobile. With BiSU App, you can see all the brands serving in your region, you can order all sizes of drinking water from any brand you want with a single click. Today (2019), BiSU App is available in most of the cities and used by millions of end users on a daily basis. However there is still a problem! 
_____
The Problem
Even though BiSU App replaced phone order system with a one-click-action on the user’s end, the app has still been establishing B2B communications with suppliers by phone. In order to bypass this time consuming method, and provide a rapid and smooth data flow, a B2B app idea (between BiSU and water suppliers) emerged with following requirements:
- Track the orders/delivery status real time.
- Report past orders/transactions.
- Change pricing and stock availability of products.
- Call BiSU or the customer if a problem occurs.
_____
The Process
The supplier workflow was the starting point. Contextual analysis and interviews with water distributors revealed how fragmented the existing phone-based system was — missed orders, pricing errors, no visibility on delivery status. That shaped the user flow directly: every screen had to answer a question a distributor was already asking by phone.
¹  Research: Contextual Analysis, Data Analytics, Interviews
²  Ideas: User Flow Map
³  Design: Sketching, Wireframing
⁴  Prototype: High Fidelity Prototype
⁵  Test-Produce-Evaluate: User Testing (in selected user group), Testing & Bug reporting
_____
User Flow
_______
The Solution
BiSU BAYI (Distributor) App provides a complete solution for tracking the orders and reporting the transactions.
Component Library
Reflection
A lean project with a clear problem — which made the design decisions easier. If I did it again, I'd push for a second round of testing with a wider supplier group before handoff.
↑Back to Top