Glossary · Reviews & UGC
Social Proof
Social proof is the buying-psychology term for signals that other customers already trust a product: star ratings, review counts, customer photos, and "X bought this" style indicators. Review and UGC apps exist to collect and display it. The honest version shows real, verifiable content; fabricated or incentivized-without-disclosure proof risks platform and FTC trouble.
Related terms
Reader favorites
The short list — full rankings live on the best-tools page.
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Klaviyo
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Zendrop
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Omnisend
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27 guides published
3 apps tracked
220 reader app clicks