If you're looking for an AI image generator that gives you rights to use the images it generates, including for commercial purposes, starryai is a good option. The app converts your prompts into images and has a clean, easy-to-use interface with controls that are easy to understand. You can generate up to 25 images a day for free with no watermark and own those images for personal and commercial use. The site also has a library of 1000+ styles and lets you fine tune your images with various options.
Another option is Imajinn, which lets you create new artistic creations based on images you upload. All the images it generates are in the public domain, meaning you can use them without any copyright restrictions. It's geared for individuals and businesses that want to create new content quickly and inexpensively without having to have graphic design expertise.
Last, Enhance AI is an all-purpose AI image generation and editing tool. It includes text-to-image generation, image editing and commercial use, with pricing that scales up depending on your needs. The interface is clean and easy to use, making it good for beginners and pros who want to integrate image generation and editing into their workflow.