Developing a Personal Finance App with Ruby


Managing personal finances is an essential part of life, and building a personal finance app can help individuals keep track of their income, expenses, and financial goals. In this guide, we'll explore how to create a basic personal finance app using Ruby.


Before getting started, make sure you have the following prerequisites:

  • Ruby installed on your system
  • A code editor (e.g., Visual Studio Code, Sublime Text)
  • Basic knowledge of Ruby programming
  • Desire to develop a personal finance app

Step 1: Setting Up Your Project

Create a new directory for your personal finance app project and set up a basic Ruby environment:

mkdir personal-finance-app
cd personal-finance-app
gem install bundler
bundle init

Step 2: Installing Necessary Gems

To build a personal finance app, you'll need gems for database management and web development. Update your Gemfile with the following gems:

# Gemfile
source ''
gem 'sinatra'
gem 'activerecord'
gem 'sqlite3'

Then, run bundle install to install these gems.

Step 3: Creating a Database

Set up a database to store financial transactions, income, expenses, and financial goals. You can use SQLite as a lightweight database for your personal finance app. Create a new database file and set up your database schema:

# database.rb
require 'active_record'
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: 'finance.db')
# Define your database schema
ActiveRecord::Schema.define do
create_table :transactions do |t|
t.string :description
t.float :amount :date
create_table :financial_goals do |t|
t.string :description
t.float :target_amount

Then, create the database by running rake db:migrate.

Step 4: Building a Web Interface

Create a simple web interface to interact with your personal finance app. You can use the Sinatra web framework for this purpose. Define routes for adding transactions, viewing transactions, setting financial goals, and more:

# app.rb
require 'sinatra'
require 'active_record'
require './database'
get '/' do
@transactions = Transaction.all
@goals = FinancialGoal.all
erb :index
# Add more routes for managing transactions and goals

Step 5: Implementing the Views

Create views (HTML templates) for your personal finance app. These views will define how the app's pages look. You can use Embedded Ruby (ERB) templates for dynamic content:

<!-- views/index.erb -->
<!DOCTYPE html>
<title>Personal Finance App</title>
<h1>Personal Finance App</h1>
<!-- Add HTML content for displaying transactions and financial goals -->


Building a personal finance app with Ruby is a practical project that can help you manage your finances or provide a valuable tool for others. As you continue to work on your personal finance app, consider adding features like transaction categories, financial reports, and user authentication to make it more robust and user-friendly. This project is an excellent way to gain experience in Ruby, web development, and database management.

Happy coding and financial planning!