Inspiration
Building a healthy body requires paying attention to both exercise and diet. Most fitness enthusiasts focus on their daily training plans, but few people place the same importance on nutrition. This is mainly because it’s hard for most people to have a clear understanding of nutrient intake, and they often rely on intuition when deciding what to eat. As a result, many fitness enthusiasts have difficulties achieving the results they’re aiming for.
What it does
We created a novel FitFuel Planner app to address this issue. The app helps users precisely track and manage their daily nutrient intake by generating personalized meal plans based on the numbers they input.
How we built it
FitFuel Planner is powered end-to-end by Gemini 3. We used Gemini 3 Pro Preview to generate the code and review our app. Gemini 3’s web-browsing capability is particularly strong—using a single prompt, it can retrieve United States Department of Agriculture (USDA) standards and help us build a detailed database. In the deployment stage, we use Gemini 3 Flash Preview as the core generator. We leverage Gemini 3’s long-context capability so it can follow user instructions while also referencing our nutrient database to produce accurate, personalized meal plan.
Challenges we ran into
When the app was finished, deployment was one of the biggest headaches for us. At first, we planned to rent a cloud server, set up the environment ourselves, and purchase a domain. All of these is tedious. But then we realized Google supports one-click deployment, which was honestly really nice—so our project went live directly.
Accomplishments that we're proud of
The moment we saw our app’s URL, we immediately shared it with our friends. Seeing everyone actually able to use our app made us genuinely happy.
What we learned
Gemini AI Studio greatly simplified the entire workflow for us—from building the app to deploying it. In the AI era, having an idea and the right prompts is the foundation of building products. Throughout the project, we were surprised by how precisely Gemini 3 could understand developers’ needs, complete coding tasks at a high quality, and do so with very few bugs.
What's next for FitFuel Planner
We hope FitFuel Planner will be helpful for fitness enthusiasts, and we want to further promote it. We plan to build an account system to better manage our users, and actively collect user feedback so we can keep improving the app. At the appropriate time, we will introduce more advanced features and charge a certain fee to ensure the operation and revenue generation of the product.
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