ACTIFUEL
ActiFuel is a mobile app that combines activity tracking with personalised nutrition plans. The goal was to help users lead a healthier lifestyle-without overwhelming them with information or forcing them to use multiple tools. The target group includes busy individuals aged 20–45 who want to stay active and eat well but need simplicity, personalization, and motivation.
The challenge
How can we help busy, health-conscious users stay consistent with their workouts and nutrition - without overwhelming them?
Many people start using health apps with good intentions but drop off quickly due to:
Fragmented tools (one app for fitness, another for nutrition, etc.)
Cluttered interfaces and complex navigation
Lack of motivation or real-time personalization
Difficulty building and maintaining healthy habits with limited time
The goal: Design a seamless, all-in-one experience that makes healthy living easier, smarter, and actually enjoyable—especially for people who already have a lot on their plate.
The solution
ActiFuel was designed as an all-in-one mobile companion that simplifies healthy living by combining fitness tracking, personalised nutrition, and smart meal planning—all in one intuitive app.
The core of the solution includes:
Simple workout tracking with smart reminders and motivation boosters
Personalised experience using data-driven suggestions for food and movement
Catering integration that lets users order meals aligned with their fitness goals
Gamified progress tracking that keeps users engaged without adding pressure
By focusing on personalisation, ease of use, and real-life value, ActiFuel helps users stay consistent without needing multiple apps or complicated routines.
Branding
Brand Promise
Fuelling your movement. Personalised meals for your goals.
Brand Essence
At the core of ActiFuel are two key pillars:
Practical Support: Advice, motivation, recipes, training plans, diet tips, and tools for living a fit, healthy lifestyle.
Emotional Empowerment: Ambition, courage, progress, and a growing sense of self-worth through better habits and routines. ActiFuel isn’t just a tool—it’s a trusted companion on your wellness journey.
Brand Personality
Hero (Caregiver)
ActiFuel blends the strength and guidance of a Hero with the nurturing, supportive nature of a Caregiver. It motivates users to reach their full potential while also supporting them in their everyday decisions-like choosing the right meal or completing a workout. It’s strong, motivating, but also there for you when you need structure and care.
Brand Slogan
Fuel your body, push your limits, own your journey.
Summary
ActiFuel’s brand identity combines clarity, motivation, and trust. It’s designed for people who want to move, grow, and feel better, without needing to juggle multiple apps or do all the planning themselves. The tone is bold but encouraging, expert but approachable. Whether someone’s just starting their fitness journey or trying to stay on track during a busy week, ActiFuel is there to guide, support, and empower every step of the way.
User research
To better understand user needs, motivations, and pain points related to healthy living, a preliminary round of qualitative research was conducted with a small, familiar group—friends, family, and acquaintances. The goal was to gain initial insight into everyday habits, challenges, and attitudes toward physical activity, nutrition, and the tools people use to support a healthy lifestyle.
Participants were asked a range of open-ended questions covering topics such as preferred types of exercise, struggles with consistency, dietary routines, and motivation drivers. We also explored their experience with meal planning, use of fitness or nutrition apps, and their opinions on dietary catering services.
Personas
Let’s meet Michael, Kamil and Magda - ActiFUEL personas
To ensure the app meets real user needs, I created detailed personas based on research and user interviews. These personas represent key user types and helped guide design decisions by keeping the experience focused, relevant, and human-centered.
Age: 22 years
Profession: Computer Science student
Location: London
Status: Single
Micheal Young
Persona bio Micheal studies computer science and works part-time as a junior front-end developer. His days are full of coding and classes at the university, but he wants to take care of his health and develop his passions. He likes the gym, board games and concerts, but he often lacks time to organize these activities.
Lifestyle Busy, lots of time on the computer, little time to organize a healthy lifestyle
Needs
+ Finding time for regular workouts
+ Better nutrition organisation
+ Systematic meal planning
+ Automatic meal and workout planning
+ Diet and activity suggestions tailored to his lifestyle
+ Reminders, challenges, reward system
+ Integration with dietary catering and activity trackers
Frustrations
- Difficulty in organising sports activities
- Forgetting about proper nutrition
- Reluctance to use many different applications
- No time to organize a healthy lifestyle
- Starts training and a healthy diet, but gets distracted quickly
- Doesn't want to cook, but doesn't want to eat just anything
- Weak motivation to train
“It would be useful to have an app that would help me sort things out a bit.”
Value Proposition Canvas
Age: 42 years
Profession: Bank employee
Location: Warsaw
Status: In a relationship
Kamil Kowalski
Persona bio Kamil has a tiring mental job. He exercises regularly with a personal trainer. He is committed to maintaining fitness and a healthy lifestyle. He eats appropriately for the gym, but is sometimes too tired to think carefully about his meals beforehand.
Lifestyle Busy, spends a lot of time on the computer, overworked
Needs
+ Maintaining a healthy lifestyle
+ Improving your diet without much need for change.
Frustrations
- Trouble planning meals ahead
- Reluctance to use many different apps
“It's hard to be perfect every day (...)
a little help would be nice.”
Age: 29 years
Profession: Beauty salon employee
Location: Gdańsk
Status: Single
Magda Rapido
Persona bio Magda is very busy, but because her schedule is completely irregular, it is hard for her to create a training plan. In addition, she is just as eager to go to fitness classes every other day, and then she won't leave the couch for a month. She would like to lose weight, but she lacks motivation and patience.
Lifestyle Busy, tries to keep up with the times and live fast
Needs
+ Losing weight
+ Regular workouts
+ Healthy eating
Frustrations
- Difficulty maintaining habits
- Difficulty maintaining weight
- Forgetting favorite activities
“Sometimes you try hard,
but life is life…”
Information architecture
At the beginning of the design process, I focused on organizing all the research insights and user needs into a clear, structured framework. This step was essential in shaping the information architecture and helped me understand how users would naturally navigate the app to achieve their goals.
Let’s start with a pencil - sketches
Wireframes
Opening Screen
This is the user’s entry point into the app experience. It’s designed for quick access to what matters most: upcoming workouts and meal tracking. the screen is designed around clarity, simplicity, and user action. It focuses on the essentials, what users need to see and do right now, while maintaining the brand’s motivational tone. Overall, this structure effectively reduces friction, supports habit formation, and encourages users to stay engaged over the long term.
High fidelity
Adding activity
One of the core features of the application is the ability to log completed workouts and schedule upcoming ones. This functionality is introduced on the opening screen, where users have quick access to their most important actions—tracking activities and meals-while staying aware of their overall schedule through an integrated calendar view.
In the extended user flow, the “Add Activity” feature becomes a key interaction. Users can define their workout type and choose whether to log it spontaneously or schedule it on the calendar. Based on the activity data, the app calculates distance, calories burned, and duration. After each session, users receive motivational feedback, along with personalised suggestions, such as reminders to hydrate or increase protein intake to support recovery.
ActiFuel MAX
Another key feature of the application is the option to upgrade to the ActiFuel Max version—a premium, paid plan designed for users who want a more personalized experience. With Max, users gain access to professional support from certified dietitians and personal trainers, who help fine-tune both their nutrition and training plans based on individual goals and progress.
The premium features will be accessible in the user settings, where users can also view a dashboard of their current results, including workout consistency, nutrition data, and overall performance. This section highlights how well the user is progressing in relation to their predefined goals, offering both insight and motivation to stay on track.
Activity list
One of the most valuable aspects of the application is its daily reports and activity summaries, which allow users to quickly assess their ongoing progress. These features provide a clear snapshot of completed workouts, nutritional intake, and hydration levels—helping users stay focused and informed.
Both the Daily Summary and Activity List views are also designed to seamlessly connect with the option of personalized dietary catering, tailored to the user’s current goals and lifestyle. This integration encourages consistent habits by providing a convenient solution for maintaining a balanced diet, directly aligned with the user’s performance data.
ActiFUEL Catering
At its core, the app’s primary function—and main revenue stream—is the sale of personalized dietary catering tailored to the user’s training needs. Users can choose from a variety of diet plans, with flexible pricing tiers, meal types, and delivery options.
Everything is designed to simplify daily life and enhance the nutritional quality of physically active users, helping them stay consistent without the hassle of daily meal planning.
Project Summary
This project confirmed for me that, as always, the devil is in the details. Combining physical activity with accurate, real-time nutritional tracking is not only a UX challenge, it’s a logic and behavior design puzzle. You quickly realize that it’s not just about clean layouts or smart features; it’s about making the complex feel simple for real people, in their everyday lives.
My main takeaway It’s a big idea, one that would definitely require a strong, multidisciplinary team to fully bring to life. There’s still plenty of work ahead in terms of refining flows, testing with real users, and optimizing edge cases. That said, I genuinely enjoyed the process. There were moments of frustration, unexpected turns, and tricky problems, but each one was a learning opportunity, and in most cases, I found a better way forward.