r/PhoneDiffusion

Prompt: spaceship landing on an alien planet, 4k, cinematic shot

Generated locally on my iPhone 17!

I’ve been working on PhoneDiffusion, a local AI image generator for Apple Silicon devices and wanted to share a demo with people who actually use Stable Diffusion.

The main idea is that you can run image generation directly on iPhone, with no cloud inference. I tested it in airplane mode with Wi-Fi and mobile data disabled so you can see it's 100% offline.

Current version includes Stable Diffusion 1.5 and SDXL models, with different defaults specifically depending on the device.

Why I think this is useful:

• quick, beginner friendly mobile setup
• no prompt/image uploads to a server
• no credit system or cloud subscription
• useful for quick concept art, private generations, product shoots, etc.

This obviously is not meant to replace a full ComfyUI / A1111 desktop setup for advanced workflows, custom nodes, LoRAs, ControlNet-heavy pipelines, etc. The goal is a faster, simpler local Stable Diffusion app for iPhone/iPad/Mac users who want on-device generation without setting up Python or relying on cloud tools.

It launches on May 25, 2026 and you can already sign up on the App Store now to try it when it goes live (link in the comments).

I’d really like feedback from the Stable Diffusion community: what models, settings, benchmarks or workflows would you want tested first? What would you use it for?

Small note about the video: I actually had Low Power Mode turned on by mistake. SD 1.5 generation usually takes 4-6 seconds on my base iPhone 16.

Mobile app generation settings: default, low power mode off - took about 8sec to generate it using my iPhone 17.

Stable Diffusion model: RealVisXL v5 lightning

Wifi off / truly local generation