Zaplingo is an AI tutor that helps with language learning for those studying English. You can chat to your own AI English tutor on WhatsApp for free. The tutor gives you personalized and easy to follow English lessons, and provides instant feedback on your progress, including pronunciation (by sending an audio message). Zaplingo is using GPT-4, and you can currently get 100 chats with all features for free, afterwards there is a soft limit of 8 chats per day.