СЛВНК is an unofficial Android app that provides access to the online Ukrainian language dictionary "Словник української мови" (or "СУМ-11"), which consists of 11 volumes. The app is developed by pohrebniakov and is free to download.

The main purpose of СЛВНК is to make it easy for users to search for Ukrainian words and their definitions. The app has a simple and user-friendly interface that allows users to easily search for words and view their meanings. The app also includes a history feature that keeps track of the user's recent searches.

Overall, СЛВНК is a useful app for anyone looking to improve their Ukrainian language skills or for native speakers who need to look up the meaning of a word. It is a great addition to the Education & Reference category of apps on the Android platform.