CaptionAddr
Word-by-word auto captions for iPhone, made on device
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CaptionAddr adds bold, word-by-word captions to your videos on iPhone and iPad. Speech is transcribed on the device with Whisper, so your clip is never uploaded. Fix any word, pick from 20 fonts and export a new video with the captions burned in, ready for TikTok, Reels or Shorts. Free for clips up to 2 minutes with no watermark; Pro (monthly or yearly, with a free trial) goes up to 30 minutes. English speech only.
PH · launched Nov 1, 2026 · 1 upvote (top 65%) · 0 views
Niche: audio and video transcription tools · 195 launches, 16 in the last 7 days ▼ -27% · Explore this niche →
Category and tags
- Horizontal
- Content generation
- B2C
- AI feature
- Commercial product
- iOS
- Video
- Inclusivity
Visit website ↗ Source listing ↗
More like this: all 195 launches in audio and video transcription tools →
Could you build this?
Partial Word-level captions, font styling, and export are vibe-codeable on iOS, but accurate on-device word-timed transcription and burn-in video rendering take real media and ML engineering.
What it would actually take: Use an iOS app built with SwiftUI and AVFoundation, running on-device speech recognition (Apple's speech APIs or whisper.cpp/Core ML Whisper) to get word timestamps. Render captions onto frames with AVVideoComposition or Core Animation and export the result. The hard parts are accurate word alignment, performance on older phones, and smooth timing-accurate rendering, which need media-pipeline expertise.
Competitors
Other products that read as similar to this one : 1103 launches clear the similarity bar, closest 8 shown.
Attention rank: #448 of 1104 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 368 days after the earliest competitor.
- Captions Cut · ph · 2026-10-25 · 2 upvotes · similarity 0.76
- CapScribe · ph · 2026-09-23 · 1 upvotes · similarity 0.75
- Karaoke Captions · ph · 2026-10-09 · 1 upvotes · similarity 0.66
- CaptionSwift · ph · 2026-11-05 · 2 upvotes · similarity 0.64
- Offline Captions · ph · 2026-11-05 · 2 upvotes · similarity 0.64
- Subloom: Video Captions · ph · 2026-11-11 · 1 upvotes · similarity 0.64
- Captora: AI Auto Captions · ph · 2026-09-25 · 1 upvotes · similarity 0.62
- Captions Bro · ph · 2026-10-07 · 25 upvotes · similarity 0.62
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.