A free program for Android, by Enhance Studio.

Photo Enhancer – Images Quality converter is an easy-to-use and effective application for the purpose of enhancing low-resolution photos and converting them to high-definition images. The app is capable of converting JPG, JPEG, GIF, BMP, TIFF, PNG, and many other file formats to the PNG format.

Photo Enhancer – Images Quality converter is a very easy-to-use application that can be used by anyone who has a smartphone or tablet and wants to convert their photos to a high-definition image. All you have to do is install the application on your device and select the file you want to convert. After that, you just have to tap the "Convert" button and the app will do everything for you. It will enhance your image and make it clearer.