SubTitler - Auto Captions

Create auto subtitles for one video, burn captions into a new MP4, and keep the original untouched.

SubTitler is an automatic caption app for adding burned-in subtitles and captions to one selected video.

Choose a video and SubTitler transcribes the audio on iPhone, places readable captions on the video, and saves a new MP4 while leaving the original untouched.

Speech language detection is automatic by default. If detection is not a good fit, choose a language from the in-app searchable list before transcription.

Useful for

• Adding captions before posting to social apps
• Making spoken videos easier to watch
• Creating captioned videos without typing every line by hand

Main features

• Choose one video and create captions automatically
• Burn captions into the exported video
• Preserve the video's orientation and aspect ratio
• Save the generated video to Photos
• Run transcription and export on device
• Use automatic speech language detection or choose a language
• Correct frequently misheard names, brands, and specialist terms

All features are available for free. There is no paywall, subscription, or in-app purchase flow.

SubTitler does not include multi-video joining, automatic cutting, BGM, or manual timeline editing.

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