인벤 for 로스트아크 is a lifestyle app developed by INVEN for Android users. This app is designed to help users keep track of the start times of various contents such as calendar island, bosses, and chaos gates, which can be easily missed. With this app, users can set alarms for each content as per their preference.

Users can receive notifications only for the contents they are interested in by using the interest button. They can also set the necessary time intervals of 5, 10, 20, or 30 minutes. The app also provides access to the "Navigation Map" and "Continent/Island Map" at the bottom of the alarm.

Furthermore, the app offers various Lost Ark INVEN contents for users to enjoy. This app does not require access to any personal information other than optional camera and storage access permissions for attaching images to posts.

Overall, INVEN for 로스트아크 is a useful app for gamers who want to keep track of various contents in Lost Ark.