Signal Extractor vs GramBook
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Signal Extractor compared with GramBook
| Detail | 
Signal Extractor | 
GramBook |
|---|
| What it does | Summarize any YouTube video or X post in 10 seconds
| Translate one thought into ten social media dialects, running locally on your phone with no account or cloud.
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | Not given
| US
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free: 1 rewrite per day. GramBook Unlimited: $1.99 a week or $42 a year.
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| Key features | - Summarize YouTube videos and X posts
- Key points with timestamps
- Ask follow-up questions
- AI-generated summaries from real transcripts
- Chrome extension
- Save summaries to account
- Follow favorite YouTube channels
- Get summaries by email
| - Runs entirely on device with no cloud or servers
- Unlimited regeneration to get different versions
- Works in airplane mode
- Exports rewrites as customizable meme cards
- Supports 16 languages with Apple Intelligence
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| What makes it different | - Saves time with ten-second summaries instead of watching full videos
- Free with no account required
- Handles both video and social media content
- Interactive chat to ask follow-up questions about content
| - Keeps all text local on your device with zero cloud processing or data transmission
- Generates platform-specific content for each social network simultaneously
- Free tier with one daily rewrite and no account setup
- Works offline in airplane mode without any account or subscription
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ▼ −1 (down) since last check | 6 ● no change since last check |
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| Trust Flow (Majestic) | 9 | 1 |
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| Citation Flow (Majestic) | 22 | 22 |
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| Referring domains (Majestic) | 51 | 11 |
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4 details filled in for both companies.
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