Is the app free? Kaiterra Support January 31, 2019 10:03 Follow Yes, it’s free! If you want to enhance your Laser Egg experience or need a live outdoor air quality app, download the Kaiterra app from the Apple App Store or the Google Play Store. Check your phone’s compatibility here. Related articles Why isn’t the app showing the readings on my Laser Egg? Comments 0 comments Please sign in to leave a comment.