The Lumosity program is designed to train your brain, and improve your memory, attention, and problem-solving skills. The app is free for iOS and Android, but you need a paid subscription to get the most out of it.
The app measures your progress with the Lumosity Performance Index, a measurement of your game scores in specific cognitive skill areas, such as Attention or Memory. If you have a paid Lumosity subscription, you can compare your LPI with the entire Lumosity community.
Caption bySarah Mitroff / Photo by Screenshot by Sarah Mitroff/CNET