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Upscayl vs Real-CUGAN ncnn Vulkan: catalog facts
Upscayl	Real-CUGAN ncnn Vulkan
Free Free and open source under the AGPL. There is no paid tier and no per-image cost.	Free Free and open source under the MIT license.
Windows, macOS, Linux	Windows, macOS, Linux
Runs entirely on your own machine, so no images are uploaded anywhere Batch processing for whole folders	Runs on Intel, AMD, Nvidia and Apple Silicon GPUs Uses Vulkan for GPU inference
Needs a Vulkan-compatible GPU; the project warns many integrated chips will not work Slow on weaker hardware, and memory-hungry on large images	The project describes itself as early in development
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: MIT
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.