Captions

Captions started life as an iPhone app that did exactly what its name suggested — added captions to vertical videos with auto-styled animations — and earned a strong following with TikTok creators on that basis. The product has since expanded dramatically.

Today it positions itself as an end-to-end AI video editor: automated scene cutting, AI-generated B-roll, caption styling, and most prominently, custom AI avatars created from a selfie or built from scratch. The pitch for the avatar feature is that you can generate talking-head videos in your own face, or a synthetic one, without ever recording yourself.

For marketing teams and small businesses producing high-volume social content, this is a clear time saver. For podcasters who interview real humans and ship recordings of those conversations, much of this is beside the point — the original captioning feature is still there but it's no longer where the company is investing.

The trend toward AI avatars also introduces an aesthetic question: prolonged synthetic talking-head video still triggers uncanny-valley reactions in many viewers, and that gets harder to hide in longer formats. If you're a content marketer pumping out shorts at scale, Captions is one of the most efficient tools in the category. If you're a podcaster looking for tasteful caption styling on real interview footage, Submagic and Opus are more focused choices.