In more detail
Reach measures how far your content traveled, while impressions count how many times it was displayed (the same person can rack up several impressions). Most platforms split reach into organic (people who saw it for free) and paid (people reached through ads), and some also track follower versus non-follower reach. Reach matters because it sets the ceiling on everything else: people have to see a post before they can like, comment, or click it. Watching reach over time tells you whether your audience is growing and whether the algorithm is pushing your content to new people.
Example
If 1,000 different accounts see your post and 300 of them scroll past it twice, your reach is 1,000 but your impressions are 1,300. A Reel that reaches 5,000 people when you have 2,000 followers means roughly 3,000 non-followers saw it, a sign the content spread beyond your existing audience.
RedaQuest analytics shows your reach across every connected platform in one place, so you can see how far each post actually traveled without checking each app separately.
FAQ