Reviewers say LipSynthesis is mainly useful for fast, high-volume social and ad video production, especially for brands that want an on-camera presence without filming themselves. Users repeatedly praise the realistic faces, solid lip-sync, broad actor library, quick rendering, and support for multiple languages, including Swedish, with some using it for UGC ads, video reviews, news, and localized campaigns. The main caveat is that output quality can still need cleanup in tools like CapCut or Adobe, and a few users want more features, such as emotion transfer.