asdöfkasdf
asdfasdf
When creating modules that format information, often there are types of information that repeat. A recipe module for example, might have a field for "Ingredient". Well, most recipes have more than 1 ingredient. You could give them a rich text field, but then you lose your ability to force consistent styling and add functionality around each ingredient. That's where repeaters come in, HubSpot has two forms of repeaters: Repeating fields, and Repeating groups.
Repeating fields are normal fields but content creators can add, remove, and re-arrange instances of the field. Using the recipe module example above, each ingredient could be a repeating text field.
This makes it so the content creator can add as many ingredients as they wish. From the developer perspective, you get an array that you can loop through to print out that list of ingredients, applying the formatting and functionality you want.
Repeating fields are best used for very simple situations. Often times repeating groups make more sense.