Opsis vs GramBook
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Opsis compared with GramBook
| Detail | 
Opsis | 
GramBook |
|---|
| What it does | Autocomplete and AI assistant for Mac and Windows, built on a private account of your work
| Translate one thought into ten social media dialects, running locally on your phone with no account or cloud.
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| Stage | Startup
| Not given
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| Founded | 2026
| Not given
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| Based in | AU
| US
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| Pricing model | Freemium
| 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 | - Autocomplete with Tab to accept drafts
- Error detection and fact-checking
- Cross-app integration
- Source attribution for every suggestion
- Context-aware AI assistance
- One-click pause and privacy control
- Encrypted data storage
- Read-only app connections
- Natural writing style matching
| - 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 | - Finishes sentences from your actual work history and connected files, not generic AI
- Shows source for every suggestion so you can verify it before accepting
- Catches mistakes and contradictions between what you're writing and your work history
- Works inline in the apps you already use without installation
- You stay the author with full control over what gets written
| - 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) | 4 ● no change since last check | 6 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 1 |
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| Citation Flow (Majestic) | 12 | 22 |
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| Referring domains (Majestic) | 1 | 11 |
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5 details filled in for both companies.
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