Advanced Custom Fields makes work a lot easier with custom fields in WordPress.
It simplifies the interface for adding and managing custom fields in your WordPress dashboard and it also simplifies the process for displaying information from custom fields on the frontend of your site. That fact only helps explain why it’s active on more than 1 million websites with a 4.9-star rating on over 1,000 reviews.
On the backend, it will let you create user-friendly meta boxes that include pre-selected field types. So, rather than that generic key-value pair interface (like those you saw above), you’ll be able to use date pickers, checkboxes, and more like this:

In total, Advanced Custom Fields offers 30+ different field types that you can add to any area in your dashboard, including posts, users, taxonomies, media, comments, and even custom options pages.
You can view detailed information about each field type here.
Advanced Custom Fields also makes it a lot easier to display that information, with well-documented functions, shortcodes, Gutenberg blocks, and more.
Or, you can find integrations with other tools, like some drag-and-drop WordPress page builders.