Cashsense

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  Landing page

Inspiration

The inspiration behind Cash Sense stems from the universal need for effective personal financial management. Many existing tools are either overly complex, geographically limited, or lack a modern, intuitive user experience. We aimed to create a web-based personal finance application that is globally accessible, easy to use, and empowers individuals to take control of their financial future through smart budgeting, diligent expense tracking, and clear goal setting for savings and investments. The vision was to build a tool that not only tracks money but also provides actionable insights and a delightful user experience.

What it does

Cash Sense is a user-friendly personal finance web app that helps individuals manage their money smarter. It offers secure authentication, personalized onboarding, and a real-time dashboard showing income, budgets, savings, investments, and expenses. Users can easily log, edit, and track financial activities across categories, set savings goals, and monitor investment performance. With responsive design and a clean, intuitive interface, Cash Sense makes budgeting simple, insightful, and accessible on any device.

How we built it

Cash Sense is developed with a modern tech stack for speed, security, and scalability. The frontend uses React, TypeScript, and Tailwind CSS for a responsive UI, enhanced by Framer Motion for animations and Recharts for data visualization. The backend is powered by Supabase, offering a secure PostgreSQL database, user authentication, and Row Level Security (RLS) to protect user data. We use PostgreSQL functions and triggers to automate logic, like updating budget balances when expenses change, and React Context API for managing authentication, app data, and theming across the app. The database schema is cleanly structured to support all core features including income, expenses, budgets, savings, and investments.

Challenges we ran into

Building Cash Sense came with key technical hurdles. Maintaining real-time budget accuracy was solved using a PostgreSQL trigger that updates budget spending when expenses change. Securing user data through Supabase’s Row Level Security (RLS) required precise policy configuration for isolation and system operations. The responsive sidebar layout was fixed using a useEffect hook to adapt visibility based on screen size. Additionally, managing multiple form types and validations demanded a consistent, user-friendly approach across the app.

Accomplishments that we're proud of

We’re proud to have built a fully functional and secure personal finance app with:

Complete core features for income, expenses, budgets, savings, and investments with full CRUD capabilities

A seamless, responsive user interface using Tailwind CSS and Framer Motion

Automated real-time budget updates via Supabase triggers, ensuring data accuracy without extra frontend logic

A secure multi-tenant setup using Row Level Security (RLS) to protect user data

A mobile-friendly, responsive design that works smoothly across all device sizes

A guided onboarding experience to help users set up quickly and understand their finances from the start

What we learned

What's next for Cashsense

We’re expanding Cash Sense with powerful features including:

AI-driven budgeting and expense classification using DeepSeek

PDF export for full financial summaries

Advanced state management with Zustand or Redux Toolkit

Offline support for logging expenses without internet

Smart notifications for budget limits and goal nudges

Financial forecasting to help users plan ahead

Multi-currency support with real-time exchange rates

Built With

• react
• supabase
• typescript