Question: Is there an app that allows me to generate high-quality art in various styles, from futuristic to classic, without watermarks?

If you're looking for an app that will generate high-quality art in a variety of styles with no watermark, starryai is a great option. This AI art generation app lets you generate up to 25 images a day for free with no watermark. It has a large library of over 1000 styles, customizable prompts, and the ability to upscale or remove backgrounds from source images. For a more premium experience, starryai also offers a Pro Unlimited plan with unlimited image generation and priority access.

Another good option is getimg.ai, which offers a powerful platform for generating original images and editing existing ones. With tools like Real-Time AI Generator, AI Canvas and an Image Editor, getimg.ai can be used for a variety of creative tasks. It can generate high-resolution images at original quality, and there are several community-trained AI models for different styles and uses, all with no watermark.

If you're looking for something quick and easy, ImgGen offers a free online AI image generator that can handle high-resolution images up to 4096 x 4096 pixels. There's no sign-up required, and it comes with a collection of photo editing and enhancement tools, making it good for creative and professional use.

Also worth a look is Artimator, which offers a free AI art generation service with multiple AI models and advanced tools for fine tuning prompts and turning photos into different styles. It offers unlimited free image generation, high-resolution downloads and an interface that's good for both beginners and pros.