Side by side
Let Me Know When vs Parallel Monitor API
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
AI-powered alerts for website changes
Track web changes continuously with scheduled queries.
Primary task
Website monitoring
Website monitoring
Pricing
Freemium · Free + from $9.99/mo
Paid · from $0.10
Pricing details
Free + from $9.99/mo
from $0.10
Billing cycle
Monthly
Pay-as-you-go
API access
Not documented
Listed as available
Platforms
Web
Web
Integrations
Slack
Webhooks
Source rating
3.0 / 5 · 4 ratings
No rating recorded
Catalog views
6.4k
282
Estimated monthly traffic
—
—
Catalog imported
30 Aug 2026
31 Aug 2026
Listed strengths
- Free website monitoring
- Competitor analysis
- Price change alerts
- Stock availability notifications
- Design change detection
- Scheduled updates
- Webhook notifications
- Natural-language queries
- News tracking
- Competitive monitoring
Listed limitations
- Paid plans expensive
- Only email, Slack notifications
- No multi-language support
- No mobile app
- No social media alerts
- Alpha version instability
- Requires natural-language query proficiency
- No support for polling
- Limited update frequency options
- Webhook dependency for notifications