If you're looking for a Supermeme.ai alternative, Create A Meme is a good choice. This AI-powered meme generator lets you create custom and personalized memes with a few clicks using modes like Magic, Custom and Template. It can handle multiple languages and comes with unlimited templates if you upgrade to a Plus tier subscription. The tool also has image editing and no watermark, so you can use it for a variety of meme generation needs. It starts with a free tier with limited features and costs $6.99/month or $6.99/year for the Plus tier for unlimited use.
Another good alternative is the AI Meme Generator. This web-based tool works on mobile devices, using the GPT-4 Vision Model to create memes directly in your browser or on your phone. You can input images from your camera or upload them and customize the memes based on different personalities and styles, like comedian or sarcastic. The tool only works in English, but its interface is easy to use, so you can quickly create funny memes to share online.