Exploring Swift Charts: A Comprehensive Guide

Data visualization
iOS development
Swift Charts have revolutionized the way data is visualized and presented on iOS devices. This powerful tool, with its versatility and wide array of features, has become a favorite among developers and data enthusiasts alike. In this blog post, we will delve into the world of Swift Charts, covering everything from its basics to its latest updates from WWDC 2023.
Anton Romanchuk
Lead iOS developer

What are Swift Charts?

Swift Charts is a framework from Apple that was introduced at WWDC 2022. It provides developers with a straightforward and efficient way to create stunning and interactive data visualizations. Whether you're building a finance app, tracking fitness progress, or displaying statistics, Swift Charts offers a variety of chart types to help you effectively communicate your data.

Supported Devices and OS Versions

Swift Charts is available on the following operating systems:

Components of Swift Charts

Swift Charts library provides a rich set of components to help you create compelling visualizations. These components include line charts, marks. Each component can be customized to match your app's design and data requirements.

Marks of different types


Types of Data Visualization

With Swift Charts, you can visualize a wide range of data types, including time-series data, categorical data, numerical data, and more. Whether you're displaying sales trends over time or comparing different categories of data, Swift Charts has you covered.

Swift Charts offers a variety of chart types, including but not limited to:

  • Line Charts
  • Bar Charts
  • Pie Charts (starting from iOS 17)
  • Scatter Plots
  • Candlestick Charts
  • Bubble Charts
  • Donut Charts (starting from iOS 17)

Swift Charts offers a variety of chart types, including but not limited to:

  1. Line Chart: Displaying stock price trends over time.
  2. Bar Chart: Comparing sales performance of different products.
  3. Pie Chart: Showing the distribution of expenses in a budgeting app.

Different types could be used in combination in case of correlation between parameters and to provide more informative visualization.

Financial Dashboard for Investment Apps:

  • Combine line charts to display historical stock prices.
  • Use bar charts to visualize portfolio allocations.
  • Incorporate pie charts to show sector-wise distribution of investments.
  • Scatter plots can help users analyze the correlation between different assets.
  • Candlestick charts can display stock price patterns.
  • By combining these chart types in an investment app, users can make informed decisions about their portfolio, track performance, and understand their investment diversification.

Health and Fitness tracking app

  • Utilize line charts to show weight loss or gain over time.
  • Bar charts can display daily calorie intake and expenditure.
  • Pie charts can illustrate the distribution of macronutrients in a user's diet.
  • Scatter plots can visualize the relationship between exercise duration and heart rate.
  • Radar charts could represent overall fitness levels across multiple parameters.
  • By combining these charts, a health and fitness tracking app can provide users with a comprehensive view of their progress, helping them achieve their wellness goals.

E-Commerce analytics Dashboard:

  • Use bar charts to display sales data for different product categories.
  • Line charts can track revenue trends over time.
  • Pie charts can show the distribution of sales by geographic region.
  • Bubble charts can help visualize product popularity and pricing.
  • Donut charts could represent customer demographics.
  • By combining these charts in an e-commerce analytics dashboard, businesses can gain insights into their sales performance, customer behavior, and market reach, enabling data-driven decisions for growth.

Customization Opportunities

Swift Charts allows for extensive customization of charts. Developers can customize line markers, point markers, and bar markers to highlight specific data points or make the charts more visually appealing. This flexibility ensures that your charts align with your app's unique design and branding.

Here's a real example demonstrating how to customize a line chart using the Swift Charts library. In this example, we'll show you how to change the line color, add data point markers, and modify axis labels.

In this example:

  • We create a line chart with data points and customize it by changing the line color to blue, increasing the line width, and filling the area under the line.
  • We add data point markers as red circles to highlight each data point.
  • The ChartBaseView is used as a container for the chart, allowing you to display it within your view controller.

This is just one example of how you can customize Swift Charts. You can further customize aspects like axis labels, legends, and tooltips based on your specific requirements and design preferences.

Latest Updates from WWDC 2023

WWDC 2023 brought exciting updates to Swift Charts:

  • SectorMark: A new chart type for displaying data in sectors, ideal for displaying market share or distribution data.
  • Selection: Enhanced interactivity, allowing users to select and explore specific data points.
  • Scrolling: Improved scrolling capabilities for large datasets, making it easier to navigate extensive charts.
  • Swift Charts from WWDC 2023 can greatly benefit products and cases like financial apps, healthcare analytics, real-time monitoring, and e-commerce platforms. The new features make it easier to create engaging and informative data visualizations that enhance the user experience.

Swift Charts is a powerful tool for developers who want to create compelling data visualizations for current Apple systems. With its broad device support, extensive customization options, and the latest updates from WWDC 2023, it's an invaluable asset for enhancing the user experience and conveying data effectively in your apps. So, harness the power of Swift Charts and elevate your data presentation game.

Also read

Rina Levanchuk
Project Manager

Before starting the development

Digital strategy
iOS development
Alena Timofeeva
Product Marketing Lead

Test startup idea

Test idea


the latest

post by email


the latest

post by email

You subscribed for our blog and news. Thank you!
Oops! Something went wrong while submitting the form.