Side by side
Kerlig vs TheLibrarian.io
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Contextual AI Writing Assistant & Chat for macOS
Your WhatsApp AI assistant for instant productivity.
Primary task
Productivity
Productivity
Pricing
Paid · from $47
Free Trial · Trial; then from $9.99/mo
Pricing details
from $47
Free + from $9.99/mo
Billing cycle
One-time
Monthly
API access
Not documented
Not documented
Platforms
Web, macOS
Web
Integrations
Slack, Figma, Jira
WhatsApp, LinkedIn, Notion, GitHub, Slack, Gmail, Zoom
Source rating
No rating recorded
4.6 / 5 · 125 ratings
Catalog views
5.5k
668k
Estimated monthly traffic
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Catalog imported
30 Aug 2026
29 Aug 2026
Listed strengths
- Designed for macOS
- Integrates into any app
- Features auto-correction
- Prevents grammatical errors
- Assists tone of voice
- Gmail integration
- Google Calendar integration
- Google Drive integration
- WhatsApp enabled
- Slack enabled
Listed limitations
- Only for macOS
- Not direct API access
- Requires own API keys
- Varying performance/context window limit
- Payment via Lemon Squeezy only
- Limited to Google Workspace
- No support for other email providers
- Only via web, WhatsApp, Slack
- SOC2 compliance pending till 2025
- Premium version not launched