In Molla, we support 4 Product Review App,
They're almost free and some additional charges may be applied
You can download them here:
Shopify Product Review: https://apps.shopify.com/product-reviews
Ryviu: https://app.ryviu.io/register
YOTPO: https://apps.shopify.com/yotpo-social-reviews
Loox: https://apps.shopify.com/loox
++ How to set up Review in Product Page?
Go to Theme settings -> Product Page -> Enable/Disable “Use Rating product page?”
On a Product Page -> Sections ->Product Single Page–> Content
You can adjust tab position by drag-and-drop function
Result:
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