Private by design · runs on your device

Add captions to any video. That's it.

Drop in a clip and Just Captions listens, transcribes, and lays down clean, readable subtitles automatically. No timeline. No editing skills. Up to 5 videos at once.

Add captions free See how it works
Processed on device Captions in ~1 minute No card to start
Drag & drop a video, or pick up to 5
mp4 · mov · up to 10 min each
or
Cooking Food creator it's SO easy
Fitness Fitness creator three sets, let's go
Travel Travel creator best street in town
Beauty Beauty creator one product, done
Podcast Podcast creator here's the thing
Real clips, captioned in Just Captions — four readable presets, no chaos
100%processed on device
Freeto download & caption
50+languages understood
~30saverage caption time
0frames uploaded to a server
How it works

Three taps from raw clip to captioned post

01

Pick a video

Drop in a clip or choose up to 5 from your library. Portrait, square or landscape — it all works.

02
creating subtitles…

We caption it

Just Captions listens, transcribes the speech, and times clean subtitles to every word — automatically.

03

Export & share

Tweak a word if you want, pick a style, and export burned-in captions ready for TikTok, Reels or Shorts.

Automatic captions

Accurate captions, without lifting a finger

No timeline, no scrubbing, no manual typing. Just Captions transcribes your speech and times every line for you — so a finished clip is a minute away, not an evening.

  • Word-level timing that actually lands
  • Punctuation & casing handled automatically
  • Understands 50+ languages out of the box
three sets, let's go
Caption presets

Four clean styles. Readable on every feed.

No bouncing words, no neon, no drama. Pick from four presets built for legibility — the kind of captions people actually read all the way through.

  • White box, yellow box, outline & black bar
  • Switch styles with one tap, see it live
  • Tuned for vertical video safe zones
hello there
White boxdefault · max contrast
hello there
Yellow boxbrand · punchy
hello there
White outlineminimal · no fill
hello there
Black barbold · cinematic
Edit text · AI correct

Fix a name or a brand in one tap

Got a tricky name, slang, or product term? Tap any line to edit it, and AI Correct cleans up misheard words across the whole clip so you don't have to chase every instance.

  • Tap-to-edit any caption line
  • AI fixes repeated mistakes in one go
  • Build a personal dictionary of your terms
00:02welcome back to the channel
00:05kombutcha kombuchaAI fix
00:08let's get straight into it
00:11first thing you'll need is…
Batch mode

Caption up to 5 videos at once

Shot a week of content in one sitting? Queue up to five clips, pick a style once, and let Just Captions work through the whole batch while you do something else.

  • One style applied across the whole queue
  • Runs in the background, notifies when done
  • Export all, or fine-tune one at a time
Batch queue 3 of 5 done
recipe-final.mp4
workout-3.mov
ep-12-clip.mp4
captioning…
On-device · private

Your footage never leaves your phone

Captions are generated right on your device. Nothing gets uploaded to a server, nothing sits in someone else's cloud — and it keeps working when the signal doesn't.

  • 100% on-device transcription
  • Works fully offline, even in airplane mode
  • No accounts required to caption a clip
Processed on your device

No upload. No queue on a server. No one but you ever sees the clip.

Offline Private On-device
Made for short-form

Whatever you film, caption it in a minute

Creators

Caption every Reel, TikTok and Short so the 85% watching on mute still get the hook.

Marketers

Turn raw founder clips and UGC into on-brand, subtitled posts without a video editor.

Podcasters

Cut audiograms and episode clips with accurate captions that bring in new listeners.

Educators

Make lessons and explainers accessible with subtitles that are clear and easy to read.

Everything inside

Small app. Surprisingly complete.

Auto-transcribe

Speech to subtitles, timed to the word, automatically.

50+ languages

Understands and captions most of what you can speak.

4 caption presets

Readable styles tuned for vertical video.

Tap to edit

Fix any word inline — AI Correct handles the rest.

Batch up to 5

Queue a week of content and walk away.

On-device

Footage never leaves your phone. Works offline.

Any aspect ratio

Portrait, square or landscape — safe zones respected.

Burned-in export

One file, captions baked in, ready to post anywhere.

Custom dictionary

Teach it your names, brands and slang once.

FAQ

Good questions, quick answers

Is my video really processed on my device?
Yes. Just Captions transcribes and times captions locally on your phone. Your footage is never uploaded to a server, and the app keeps working with no connection at all.
How many videos can I caption at once?
Up to five at a time. Pick a caption style once and the whole batch runs in the background, then you can fine-tune any clip before exporting.
What languages are supported?
Just Captions understands 50+ languages and captions them in the language that's spoken. Accuracy is best with clear audio.
Can I edit the captions if a word is wrong?
Tap any line to edit it. AI Correct fixes a misheard name or term everywhere it appears, and you can save your own words to a personal dictionary.
What does it cost?
You can caption your first videos free with no card required. A simple Pro upgrade unlocks unlimited captioning and longer clips.

Add captions to your next video. That's it.

Free to start, no card, nothing uploaded. Drop in a clip and watch the captions write themselves.

Add captions free Download on theApp Store