Kosmos Hi Lo is a free messaging and calling app designed for Android users. It comes with two dedicated communication platforms within the same application - the "Hi" level for sensitive communications with friends and the "Lo" level for everyday interactions.

The app allows users to switch between the two platforms with ease, depending on the nature of the communication. The "Kill" code feature is also available to delete all "Hi" level communications.

Overall, Kosmos Hi Lo is an excellent app for those who value privacy and security in their communications. With its dual-platform feature, users can separate their sensitive conversations from their everyday interactions with ease.