Free Auto-Caption Apps for iPhone: What's Actually Free
Search the App Store for auto-captions and every result says free. Export a video and you meet the real terms: a watermark across your clip, a hard cap on video length, or a weekly subscription prompt.
Here is what the word free actually buys you in this category, and which limits matter.
The three limits to check before you edit
- Watermark on export. The most common one. You only find out after you have styled every caption, and the mark usually cannot be removed at any price below a subscription.
- Clip length cap. Some free tiers stop at 30 or 60 seconds, which rules out most YouTube and podcast content.
- Weekly subscriptions. A weekly price looks small and annualises to more than most full video editors cost outright.
Where Auto Captions draws the line
The first video export is free and carries no watermark — full quality, nothing stamped on it. Exporting .srt subtitle files stays free with no limit at all, so you can caption an entire back catalogue and take the files into another editor without paying anything.
Premium unlocks unlimited video exports. It is an upgrade, not a weekly subscription.
The free option nobody mentions
If your video is going to YouTube, YouTube itself generates captions free once uploaded, and you can edit them in Studio. It does nothing for TikTok or Reels, where captions must be part of the picture, but for long-form it costs nothing and is genuinely good.
