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CapZest

Auto captions · Android · iOS

CapZest listens to your talking video and adds bold, animated, word-by-word captions — the kind that keep people watching. Speech recognition runs entirely on your phone, with nothing to download.

Coming soon

What it does

  • Automatic captions in 15 languages, or let it detect the language
  • Speech recognition on the device — your video is never uploaded
  • 7 caption styles, 3 free, plus 4 fonts and 8 accent colours
  • Tap words to highlight the key ones
  • Fix any word or line, drag captions where you want them
  • Punchy zoom on the beat
  • Export MP4 for TikTok, Reels and Shorts — or a free SRT subtitle file

Your privacy, in short

  • Your videos and their audio never leave your phone. Transcription runs on the device.
  • The speech model is built into the app — no download, no account and no analytics.

Read the full privacy policy →