PixelGen: A Free, Fully Offline iPhone Image Upscaler That Hits 4K on the Neural Engine
Agitated-Pea3251 · reddit · 2026-11-04
A developer released PixelGen, a hobby iOS image-upscaling app:
- Upscales images to 4K, taking roughly 5–10 seconds per image
- Runs fully offline on the Apple Neural Engine, drawing less power than the display without overheating the device
- Powered by Real-ESRGAN under the hood
- Completely free: no daily limits, credits, or premium features, and the author says none are planned
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