A free program for Android, by Vertexshare Software Ltd.

With this app, you can enlarge images, photos, and anime pictures by up to 800% without losing quality. The AI sharpening technology can automatically sharpen and enhance images to make them look clear. The image enhancement and color correction function can also improve picture quality.

The app supports all resolutions, from 4k to 16k ultra-high-definition. It is also optimized to run on both phones and tablets. 

You can choose to pay monthly or yearly for the premium version. The price may vary depending on the plan you choose. You can use the app for free with the trial version.