Which product reviews app should I use on Shopify?

They overlap a lot, so choose by what you actually need. Judge.me is the value pick — full-featured and inexpensive. Loox leans visual (photo/video reviews) and is great for lifestyle brands. Yotpo and Okendo are more platform-like (reviews + loyalty + UGC) and priced for bigger brands.

Whatever you pick, make sure it outputs review schema markup so star ratings show in Google, supports importing if you're migrating reviews, and loads efficiently (some are heavier than others). For most small-to-mid stores, Judge.me or Loox is the sweet spot.