One of the best apps or sites to convert your photo to a cartoon for free is 'ToonApp'. ToonApp is a popular mobile app available for both iOS and Android devices that allows you to easily transform your photos into vibrant and artistic cartoons. It offers a wide range of cartoon effects, filters, and editing tools to customize your cartoon creations. With ToonApp, you can create personalized avatars, comic-style illustrations, or playful caricatures with just a few taps. Additionally, the app is user-friendly and offers a seamless experience for users of all skill levels.

In addition to ToonApp, another excellent option for converting your photo to a cartoon for free is the 'AI Cartoonizer' website. AI Cartoonizer utilizes advanced artificial intelligence technology to convert photo to cartoon and artistic cartoons with remarkable accuracy. It's a user-friendly online tool that allows you to upload your photo, apply various cartoon effects and adjustments, and download the cartoonized version of your picture—all for free. Whether you're looking to create personalized avatars, comic-style illustrations, or playful caricatures, AI Cartoonizer offers impressive results with ease.