If you want to make custom wallpapers for your devices without worrying about a daily limit, Avolo is a great option. This offline tool includes a wide range of imaging options, including AI text-to-image generation, texture mode for patterns and textures, and high-resolution upscaling (up to 117 megapixels). Avolo has no subscription requirements so you can use it as much as you want for wallpaper creation.
Another option is Vieutopia, which offers a free, no-subscription option to generate unique images in a variety of artistic styles. It works on multiple devices with web and mobile apps and lets you convert your creations into phone wallpapers. Vieutopia also screens results to ensure they're not inappropriate, so it's a good option for artistic and creative uses.
Last is Artimator, which offers unlimited free image generation using a variety of AI models. It's got tools to refine prompts, turn photos into different styles and generate high-resolution images. It's good for beginners and experts, so you can keep your creative juices flowing without worrying about a daily limit.