The best alternatives to DuckFace App are Toonify, Face Swapper, and Toonme.com by Photo Lab. If these 3 options don't work for you, we've listed a few more alternatives below.
Toonify Yourself was made by Justin Pinkney and Doron Adler for fun and amusement using deep learning and Generative Adversarial Networks (StyleGAN for image pairs and Pix2PixHD for training).
FaceSwapper (https://faceswapper.ai) is a face swapping online tool that enables you to replace face with other faces of your choice. No need to swap face manually, just upload the face pictures, our AI system will process them automatically.
Woo Hoo! Check how your iconic yellowish double in The Simpsons would look. Or what kind of Disney prince(ss) you'd be. More styles on board with an option to mix them into a fun collage for dessert. And miracle it is not. It's our AI almighty.)