Waifu2x ncnn: Image upscaler

Archie Meng

Contains adsIn-app purchases

About this app

The first decent GPU accelerated image upscaler / enlarger / enhancer on Android.

Still bothering for the upscale amount limits of online services? Try this app for free. No amount limits and forced queue time here. Only your device performance can limit what you can do here. :)

It runs on your own devices locally, and doesn't require you to upload any images to some remote servers.

What is processed on your devices, always stays on your devices.

It supports the famous image upscale / denoise models: CUNet / UpConv-Photo / UpConv-Anime / RealCUGAN models.

- 1. The google play service and ads SDK still needs network access.
- 2. More models including RealSR, Real-ESRGAN will be ported in the future.
- 3. The actual elapsed time depends on device performance.
- 4. Click for 5 times on Version number in settings to enable the hidden advanced settings.
- 5. The "process image as a whole" mode is the default and only way of processing now.

For those devices which receives blank result during GPU mode processing, try to use CPU mode and see if it works.

Note: This may be caused by an out-of-date GPU driver. If you can the GPU driver for your device (either by flashing a newer ROM or using a GPU driver update module), please try to do so first if you meet processing errors. And this is how I solve the GPU processing problems on my Redmi 3S. :)

Ratings and reviews

I recently upgraded to the Samsung s26 ultra and before this recent update everything worked fine. After the update the app keeps crashing while processing an image. So for now I will stay on the previous version until the issue is fixed. Other than that the app is great!

I'm so so sorry for putting up 1 star, but this must be addressed right away! Every single image to be processed, doesn't work at all, in a sense that the image being processed isn't shown, it's just plain gray background! So naturally, we can't have the improved quality version of our image... Please fix this, dear developer/s. I'm sorry again for the 1 star, it really had to be fixed 😥😥😥

App is great when it works. But since the last update, it crashes every time it tries to upscale an image.

What’s new

Rolling back ncnn lib version to the same as 2.5.2 to see if it solve the issue for some users