Remote Viewing is a protocol popularized by the CIA in the 1970s for testing the ability of individuals to perceive distant or unseen targets using their mind's eye.
See Wikipedia for more information.
In Practice mode, you'll be shown a unique tag number and asked to visualize the associated image. After you've spent time visualizing, you can reveal the image and reflect on what aspects you accurately perceived and which ones you didn't.
This mode is for familiarizing yourself with the sensation of intuition.
You'll be shown a tag number and asked to visualize it. Then, you'll be presented with two images side by side and must choose which one matches your visualization.
This mode is for validating your sense of intuition and tracking your improvement over time. You can view your accuracy over time in the Stats section.