Palabras cultas is a free Android application developed by KikerSoft that helps users learn new words in Spanish. The program is designed to teach users words they may not have heard before, enabling them to express themselves better and more formally. The app is a great tool for anyone looking to improve their vocabulary and impress others with their language skills.

The app's interface is user-friendly and easy to navigate, making it easy for users to find the words they want to learn. In addition to the app, Palabras cultas has an Instagram page (palabras_inusuales) where they post new content every day with the meaning and usage of new words.

Overall, Palabras cultas is an excellent tool for anyone looking to expand their Spanish vocabulary. The app is free and easy to use, and the Instagram page provides additional resources for users to continue learning new words.