A personal finance app with a friendly AI assistant
Built as the final project of Le Wagon Tokyo Web Development Bootcamp (Batch #2058)
Centsible is a full-stack personal finance application designed to make managing money simple and approachable.
Users can log expenses and income, set savings goals, track budgets, and get AI-powered insights from Centi, the built-in finance assistant.
Developed over 2 weeks by a team of 4 developers, Centsible demonstrates practical skills in frontend, backend, databases, and AI integration.
- ➕ Add transactions (expense/income) via text, receipt photo, or voice
- 📂 Categorize spending into custom categories
- 📊 Track monthly budgets and compare with previous months
- 🐷 Create savings goals (Piggy Banks) with visual progress bars
- 🤖 Chat with Centi (AI assistant) for friendly financial advice
- 📱 Mobile-first design and Progressive Web App (PWA) support
- Frontend: HTML, CSS (Bootstrap 5), JavaScript (Stimulus, Hotwire)
- Backend: Ruby on Rails 7
- Database: PostgreSQL
- AI Integration: RubyLLM with Gemini API
- Other: PWA setup, Heroku deployment
| Dashboard | Chat with Centi | Categories |
|---|---|---|
 |
 |
 |
- Ruby 3.2+
- Rails 7+
- PostgreSQL
# Clone the repo
git clone https://github.com/yourusername/centsible.git
cd centsible
# Install dependencies
bundle install
# Setup the database
rails db:create db:migrate db:seed
# Run the app
bin/devThen open http://localhost:3000 🎉
Centsible was built as the final project of Le Wagon Tokyo (Batch #2058).
- Gaëtan Duquesnoy — Team Lead / Full-Stack Developer
- Monika Chrzan — Frontend / UI
- Mandil Khadka — Backend / Database
- Stefan Muhsin — Backend / AI integration
- Leading a small dev team with task organization in Notion, Figma, GitHub Projects
- Designing a relational database and implementing ActiveRecord associations
- Building interactive features with Hotwire & Stimulus
- Integrating an LLM for real-time AI advice
- Deploying a Rails app as a Progressive Web App
This project is licensed under the MIT License.
✨ Centsible is the result of teamwork, rapid development, and a strong focus on user experience — demonstrating the ability to bring an idea from concept to production in just 2 weeks.
Rails app generated with lewagon/rails-templates, created by the Le Wagon coding bootcamp team.