top of page

Project Overview:

The Carpoolz app was developed as part of my Google Certificate program. It is designed for parents or guardians who lack a consistent schedule or are too busy to pick up their children from school, and for students who need to take the bus but sometimes struggle with the schedules. The app allows parents to find available carpools with other students' parents and set reminders for bus schedules

Role:

Sole UX / UI designer

Project type:

Dedicated mobile app

Project challenge:

Design a prototype app that helps busy parents or guardians who lack a consistent schedule or have a busy schedule, and aren't tech savvy, and students who sometimes struggle with the bus schedules

Methodology:

As the sole UX designer, I conducted moderated usability testing and utilized existing data. My responsibilities included wireframing (low & high fidelity), user research, and applying UX principles to UI design for enhanced usability.

Knowing our main persona ( Emphatize phase )

Persona and Pain Points

Persona: Ronaldo

Ronaldo Profile Pic.jpg

Age: 34

Education: Some college

Hometown: Chicago

Family: Wife and 2 kids

Occupation: Entrepeneur​​​​​​​

Problem statement: Ronaldo, a small entrepreneur with a fluctuating schedule, needs a reliable solution to ensure his children get home safely when meetings run late

Goals:

Wants to pick up the kids from school every day;

Ensuring the safety of their children.

Frustrations:

Occasionally express frustration about bus' schedules

Don't have a great digital literacy

Storyboard:

Oh no late meeting again.jpg

Oh no, a late
meeting again

I look at the clock and cant pick up my children again.jpg

I will not be able to pick up my children today.. again :(

What I m gonna do now.jpg

What am I going to
do ?

Oh I remembered the carpools app.jpg

Oh ! the Carpoolz
App !

With its easy design I was able to call for a carpool in less than two minutes.jpg

With this intuitive design I was
able to ask for a carpool in less than
two minutes !

Now i m relaxed knowing my children will be home.jpg

Knowing the app will safely deliver my children home reassures me

Starting the design:

Paper wireframes:
Wireframe Carpoolz.png
Wireframe Carpoolz 2.png
Log-in and Main menu
Carpooling & Driver page

After some work, the first digital wireframes were ready...

image.png
image.png
image.png
Log-in
Main Menu
Carpool menu
image.png
image.png
Driver's profile
Driver's profile after confirmed Carpool
Designed with simplicity and intuitiveness in mind , minimum amount of buttons with the same appearance

Usability study findings:

Most usability study participants expressed concerns about the location button on the Carpool menu and the confirmation page
image.png

"I think the ideal would be to add a better indicator that this is, in fact, a button"

Participant N

"I think it should also confirm the driver's name"

Participant Y

image.png
After a round of iteration around the users' feedback and refinement...

Refining the design based on iterations:

Before:

After:

image.png
image.png
image.png
image.png
Now it's time for the final designs, after all iterations, and ready to launch...
Final Designs
Log-in ( splitted in two )
We reduced on-screen information to minimize confusion, particularly for our users that have limited digital literacy. This change was implemented in the final design.
Login Screen final 1.png
Login Screen Final.png
Carpooling menu & Driver profile
Considering more accessibility to our users, a progress bar was also added giving them feedback on where they are at the journey
Normal Screen FONTE.jpg
Driver profile final.jpg
Bus Routes menu and Bus' profile
Bus routes.jpg
image.png
Now one of the most important things about this project, or the most, the Takeaways
Takeaways

Throughout this first project, I learned that users can be unpredictable, making the empathize phase and user research indispensable. I also learned that design kits are essential for saving time. Perhaps the most important lesson I’ve learned is that no design assumption should be left untested with users. Validating ideas with real users is crucial to ensure the product’s effectiveness in the market. All these insights will certainly guide me in future projects, always with a central focus on the user.

Thank you !
for reading my project

© 2025 by Renatto Inazawa
All glory to God !

bottom of page