Question: I'm looking for a tool that can turn my rough sketches into photorealistic images without needing an internet connection.

If you're looking for an offline tool to convert your sketches into photorealistic images, Avolo is a top contender. It's 100% offline, so you can generate as many images as you want without any subscription. It includes AI text-to-image generation, texture mode for creating patterns and textures, and AI upscaling for exporting high-resolution images. Avolo runs on Apple Silicon and Intel processors, so you can use it on either Macs or PCs.

Another good option is DrawingPics, an offline AI art generator for Macs. It's got a whiteboard interface and controls like "Draw to Real" for iterative refinement and Precision Control mode for drawing fine lines. It also supports custom models and LoRAs, so it's good for artists and designers who want to use their own models for high-quality image generation even when they don't have a network connection.

DiffusionBee is another standalone app that uses Stable Diffusion to generate AI art offline. It's got a variety of creative controls, including text-to-image generation, generative fill and image upsampling. It's a private and secure way to generate and edit images with prompts and human drawing, so it's good for people who don't like relying on cloud services.

If you're in architecture or design, NewArc.ai is a powerful tool that can convert sketches into photorealistic images and 3D renders fast. It works with a variety of subjects, including fashion, automotive and interior design, so creative professionals can visualize and control styles easily. NewArc.ai offers tiered pricing, including a free tier, so it's good for different needs and budgets.