An auto captions app listens to the speech in your video and turns it into timed text on screen, so people watching with the sound off can follow along. The apps you already post from now do it for free, and the paid tools sell style and speed more than accuracy.
Here are six options, what each does best, and how to add captions to reels so they're actually read. Feature details are from vendor pages and published guides as of October 2026; menus and plans change, so check the current version.
Do you need a separate auto captions app?
Probably not to start. Test it first: take a finished video, run the built-in captions in Instagram, TikTok or CapCut, and read the result on your phone. If the words are right, a paid app would be buying you a look, which may be worth it but is a smaller purchase than it's sold as.
Built-in captions still struggle with:
- Strong accents, where errors climb.
- Names, brands and jargon, which every tool gets wrong until corrected.
- Two speakers talking over each other.
- Some languages, where quality varies a lot.
If those describe your videos, a dedicated tool with better editing and styling earns its price.
Which auto captions apps are worth using?
| App | Where it runs | What it does well | Cost |
|---|---|---|---|
| Instagram (Captions sticker, Edits) | Instagram app, Edits app | Captions in the place you post | Free |
| TikTok | TikTok app | Captions in the editor, viewers can toggle | Free |
| CapCut | Phone, desktop, web | Auto captions inside a full editor | Free, with paid tier and usage limits on some AI tools |
| Captions (by Mirage) | Phone, web | Talking-head videos, styled captions | Subscription |
| Submagic | Browser | Animated captions, emoji, zooms | Subscription |
| Descript | Desktop, browser | Edit video by editing the transcript | Free tier, subscription |
Instagram and Edits: free, where you post
In the Reels editor, the Captions sticker transcribes your audio and lets you edit the text and pick a style. Meta's free Edits app also generates and styles captions before export. For a quick reel, this is the shortest path.
Best for: most Instagram creators. Weak at: styling and control over the look.
TikTok: built into the editor
After recording or uploading, tap Captions in the editor, review the transcript, fix errors and save. Viewers can turn creator captions off, which is good for accessibility but means they aren't guaranteed to show.
Best for: TikTok-first creators. Weak at: cross-posting, since the captions stay on TikTok.
CapCut: the free all-rounder
CapCut generates captions from speech, supports many languages, and lets you edit and style them inside the same editor you cut in. Some guides report usage limits on AI features on the free plan, so check what your account allows.
Best for: creators who edit in CapCut anyway. Weak at: standing out, because its caption presets are everywhere.
Captions: built for talking to camera
The Captions app (its company renamed itself Mirage in 2025; the app kept its name) is phone-first and built around talking-head video, with captions in many languages plus tools like filler-word removal and eye contact correction.
Best for: daily talking-head creators who want a styled result quickly. Weak at: anything that isn't a person talking.
Submagic: styled captions in a minute
Submagic takes a talking video and returns it with animated captions, emoji and zooms. It's fast and the look is polished; the trade is that the look is shared by a lot of accounts. Submagic alternatives compares it with the rest in more detail.
Best for: fast, styled captions on short talking clips. Weak at: looking different from everyone else using it.
Descript: when the transcript is the editor
Descript transcribes the video and lets you cut it by deleting words from the transcript. Captions come from the same transcript. That's a big time saver for interviews and podcasts, and more than a 15-second reel needs.
Best for: long talking videos, interviews, podcasts. Weak at: quick vertical clips; there's a learning curve.
How do you add captions to reels so people read them?
Whichever tool generates them, the same rules make captions readable:
- Proofread every line on a phone. Burned-in captions can't be fixed after posting without reposting.
- Three or four words a line, two lines at most.
- Large and bold, around 60 to 80 pixels at 1080 wide.
- High contrast: an outline or a dark box, so a bright clip doesn't swallow the text.
- In the middle band of the frame, away from the bottom strip and right edge the app's interface covers.
- Keep the hook separate. A fixed hook line at the top, captions running underneath.
Reel captions and subtitles goes deeper on burned-in versus platform captions, and why the best answer is often both.
Can Easy Reels auto-caption videos?
No. Easy Reels templates don't generate captions from speech, so if your videos are people talking, use one of the tools above for the captions.
What Easy Reels does is the on-screen text that isn't speech: hooks, labels and calls to action on short vertical videos cut to music from your own clips. Designs save the position, font, size and colour once, with placeholders for the words. A copy pool holds many hooks, and each render draws one it hasn't used lately, so a batch of 10 (Pro) or 50 (Ultra) gets different lines in the same style. That suits b-roll, product, travel and faceless reels, where text carries the message instead of a voice. Every plan starts with a 14-day trial with full access, free if you cancel before it ends; then Pro is $19 and Ultra $39 a month. See pricing.
A common split: caption your talking videos in CapCut or Captions, and make your music-led reels with hooks in Easy Reels.
Common questions
What is the best free auto captions app?
For most people, the one built into where you post: Instagram's Captions sticker or Edits, or TikTok's Captions. CapCut is the best free option if you also want to edit and style.
How do I add captions to reels automatically?
In the Instagram Reels editor, add the Captions sticker; it transcribes your audio. Edit any wrong words, choose a style, and place it in the middle of the frame before posting.
Are auto captions accurate?
Good, not perfect. They handle clear speech well and struggle with accents, names and jargon. Always read them through before posting.
Should captions be burned in or added by the platform?
Burned in for a consistent look that survives cross-posting, and the platform's own captions on as well for accessibility. You can have both.