4. Freemium With Credit. Many awesome online products allow users to choose from a free version, which includes a watermark or credit line, or the option to upgrade to the paid version, which allows users to remove the mark or replace it with their own logo.
Definition of at the whim of (someone) : when (someone) wishes, desires, or decides something often in a sudden way The shop is only open at the whim of the owner.
July 1, 2015. The EU-funded 'What-if Machine' (WHIM) project not only generates fictional storylines but also judges their potential usefulness and appeal. It represents a major advance in the field of computational creativity.