subtitle.im vs Kaption AI

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

subtitle.im compared with Kaption AI
Detail	subtitle.im	Kaption AI
What it does	YouTube captions, on when needed, off when they get in the way.	WhatsApp voice messages to text with AI
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Free: $0, no sign-up needed, 10 successfully handled videos in total with no monthly reset. Pro subscription: $17.99 / year, billed annually. Pro Lifetime: $29.99 / once, pay once for ongoing maintenance and all major and minor updates.	Free: no credit card required. Basic: US$5.99/month (US$4.99/month quarterly, US$3.99/month annually). Pro: US$9.99/month (US$7.99/month quarterly, US$5.99/month annually). Also available in Brazilian Real: Basic from R$29.99/month, Pro from R$49.99/month.
Key features	Automatic caption control - follow YouTube, auto-open, or auto-close Local OCR detects burned-in subtitles Handle duplicate captions with separate settings Manage different languages in captions Channel-specific caption rules (Pro) Video-specific rules (Pro) Remember confirmed caption closures (Pro) Restore captions if hidden by mistake Privacy-first local processing	Voice message transcription with automatic text conversion Chat summarization with AI Live translation in 36 languages WhatsApp call recording with transcripts Integration with Claude and ChatGPT via MCP Kanban board for chat organization Scheduled messages and reminders Contact export and group member download Privacy mode and screen lock Support for multiple WhatsApp accounts on desktop
What makes it different	All processing happens locally in your browser with no video frames uploaded Automatically detect burned-in subtitles and handle them separately from YouTube captions Set caption preferences at global, channel, or video level Free to try with 10 videos before upgrading No email or account required for free use	Transcription runs locally on your device; audio only temporarily sent to servers for processing 4.8-star rating with over 5,000 reviews in Chrome Web Store Used by over 50,000 active users Works with multiple platforms: Chrome, Edge, Mac, Windows, iPhone, Android
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	21 no change since last check	19 no change since last check
Trust Flow (Majestic)	15	6
Citation Flow (Majestic)	24	30
Referring domains (Majestic)	36	181

5 details filled in for both companies.

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