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Analyzing trends based on historical or predicted values
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Visualizing the current state of a process, system, or quantity that changes over time
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Evaluating different items — or the same item at different times — by comparing data across multiple categories
Best practices
Use a chart when you want to highlight important information about a dataset.
Keep a chart simple, letting people choose when they want additional details.
Make every chart in your app accessible.
Designing effective charts
In general, prefer using common chart types.
If you need to create a chart that presents data in a novel way, help people learn how to interpret the chart.
Examine the data from multiple levels or perspectives to find details you can display to enhance the chart.
Aid comprehension by adding descriptive text to the chart.
Match the size of a chart to its functionality, topic, and level of detail.
Prefer consistency across multiple charts, deviating only when you need to highlight differences.
Maintain continuity among multiple charts that use the same data.
For the complete guidance, including worked examples and illustrations, see the canonical page: https://developer.apple.com/design/human-interface-guidelines/charting-data