SubTitler · Auto captions for iPhone
Pick a video.
Save it with captions.
Create captions from speech on iPhone and save a new MP4 with the captions already on the video. Your original stays unchanged.
All features are free.
From speech to a captioned video.
Captions become part of the saved video, ready to share in your usual apps.
Choose one video
Select the video you want to caption. SubTitler works with one video at a time.
Create captions on iPhone
SubTitler transcribes the speech on device. Language detection is automatic, or you can choose the speech language before transcription.
Save a new MP4
Captions are burned into a new video saved to Photos. The original video stays untouched.
For spoken videos
Let viewers read along.
Add captions before sharing a spoken video. For names, brands, or specialist terms that are often misheard, you can set correction rules in the app.
Also in the Kyodo family
Need more than captions?
Kyodo combines video joining, rough cutting, captions, bundled BGM, and saving. Choose SubTitler when you only need captions.