https://gravitywiz.com/documentation/gravity-forms-inventory/

Easy, flexible inventory management per field.Supports all Product field types and choice-based fields.Apply limits to individual choices.Supports all choice-based fields including Radio Buttons, Checkboxes, Drop Downs, and Multi Selects plus their Product field equivalents.Share inventory across multiple fields and forms.Adult/child tickets to the same event? Same product, different forms? Easily configure your fields to share the same inventory.Scope inventory by grouping related fields together.Group a Date field and Product field and you can sell tickets to a daily event. That’s just a taste of this powerful feature!

Changelog

- Improved reliability of the object caching used with choice-based inventory.