Khalmg keln is an Android application developed by Alexey Zunov for learning the Kalmyk language. It is a free educational app that helps users learn Kalmyk anytime and anywhere. With the application, users can join the revival of the Kalmyk language and explore its vocabulary, good wishes, proverbs, poems, and more.

The app features a training mode that allows users to learn new words formed in certain categories. It also offers a Kalmyk-Russian and Russian-Kalmyk offline dictionary with over 30,000 words. If you find any mistakes in the dictionaries, you can report them using the feedback option. The app encourages users to contribute to the development of the Kalmyk language.