10. Denny's is a fast-food restaurant chain known for its American breakfast and lunch menu, offering a wide variety of breakfast, lunch, and dinner options.
Operator computes a Health score every night at 2 am HST. It's the one number that tells you if this shop is winning, losing, or steady. Here's how Denny's broke down on Apr 26, 2026.
Denny's is indexed in Operator's Restaurant market index for Fullerton, CA.
Operator has not indexed public photos for Denny's yet.
Reviews pulled nightly from Google, Yelp, and Meta. Aggregate weighted by recency and source authority.
The Restaurant shops Denny's competes with most often, ranked by Operator's health score. Tap any row for that shop's full page.
The questions people ask before they call.