Portfolio Case Study

    Group Trip Cost and
    Expense Tracking App

    We built a mobile app that helps travel groups record shared expenses, calculate balances automatically, and settle costs more clearly during and after the trip.

    Overview

    Planning trips with friends or groups often involves shared expenses such as accommodation, transportation, meals, and activities. Keeping track of who paid for what can quickly become confusing, especially when multiple people are contributing to different expenses during the trip.

    To simplify this process, a mobile application was developed that allows groups to track shared trip expenses and automatically calculate how much each person owes.

    The app helps travelers manage group spending in a transparent and organized way.

    The Challenge

    Managing expenses during group trips can become difficult when payments are made by different people at different times.

    Some common challenges included:

    • Difficulty tracking shared expenses across multiple group members
    • Confusion about who paid for which activity or purchase
    • Manual calculations required to settle balances at the end of the trip
    • Lack of a simple tool designed specifically for travel group expenses
    • Disagreements caused by unclear expense tracking

    The Solution

    We developed a mobile application that allows users to record trip expenses and automatically calculate how the total cost should be split among group members.

    Users can create a trip group, add participants, and log expenses as they occur. The system tracks who paid for each expense and calculates the balances between members so everyone can settle payments more easily at the end of the trip.

    The app focuses on making expense tracking simple and transparent for group travel situations.

    Key Features

    Trip Creation

    • Create trips for different travel groups
    • Add friends or group members
    • Manage multiple trips within the app

    Expense Tracking

    • Record shared expenses during the trip
    • Identify who paid and who participated in the expense
    • Automatically calculate expense splits

    Balance Calculation

    • Calculate how much each person owes
    • Show clear balances between group members
    • Simplify final settlement

    Expense History

    • View complete trip expense history
    • Track payments and contributions

    Simple User Interface

    • Easy expense entry during travel
    • Clear summaries of trip spending

    Technology Stack

    Mobile Application

    React Native

    Backend

    Node.js API

    Database

    PostgreSQL

    Infrastructure

    Cloud deployment on AWS

    Implementation Approach

    The application was designed to minimize the effort required to log expenses while traveling. The interface focuses on quick data entry and clear financial summaries so users can understand group balances without manual calculations.

    The backend system manages expense records and performs automated calculations to ensure accurate cost splitting among participants.

    Outcome

    The trip expense tracking app provides travelers with a convenient way to manage group spending.

    • Simplified tracking of shared travel expenses
    • Transparent cost distribution among group members
    • Reduced confusion about who owes what
    • Faster settlement of group expenses

    Project Type

    • Mobile App Development
    • Expense Tracking Application
    • Travel Utility App
    • Backend API Development

    Building Consumer-Focused Mobile Applications

    If you are planning a consumer app that needs a simple user experience and reliable backend logic, we can help shape a practical product that stays easy to use as it grows.

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