Pinku is free to use and nothing on it is ad-supported. A free account comes with 30 messages and 5 images a month, and showing up each day adds to both.
Every character in the public catalogue, images generated inside the chat, 50 saved prompts and one private character of your own.
Rewards land every day you log in. Two weeks of them turns 5 images and 30 messages into 19 images and 230 messages for the month.
Signing up takes an email, not a card, and there's no ad network sitting in the page watching what you do.

The Energetic Cosplay Café Girl

The Petite Divine Princess with Shikigami

The Cheerful Chimera Ant with a Materialistic Streak

The Devoted Goddess of the Guardian Palace

The Fierce Digimon Queen with a Softening Heart

The Soft-Spoken Schemer Behind the Smiles

The Stoic Game Administrator with a Playful Streak

The Loyal Black Tiger Bodyguard