DownNotifier.com vs Visual Sentinel
DownNotifier.com
downnotifier.comVisual Sentinel
visualsentinel.comSide by side
| Figure | DownNotifier.com | Visual Sentinel |
|---|---|---|
| Price from | $1.25/mo | $4.50/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 3 | 15 |
| Spec score · Website Monitoring Software | 8.3 (#19) | 8.5 (#11) |
| API | The site links to API documentation. | The public REST API uses scoped organization keys and exposes monitors, incidents, status pages, maintenance windows, reports, notification channels and servers. |
| Security | The privacy policy says personal information is kept behind secured networks, access is limited, and supplied information is encrypted using SSL technology. | The privacy policy states that data is encrypted in transit with TLS 1.3 and sensitive integration credentials and API tokens are encrypted at rest with AES-256-GCM. |
| SSL monitoring | SSL monitoring can alert about certificates expiring within 10 days, incorrect operation, insecure configuration, or compatibility issues with older browsers. | It checks certificate expiry, hostname and trust authorization, and records the served leaf certificate. |
| Support | The contact page lists [email protected] as the support email address. | The company says human support replies typically within 24 hours by email. |
Plans
Visual Sentinel
- Solo$6 a month
- Solo$54 a year
- Starter$12 a month
- Starter$108 a year
- Business$39 a month
- Business$351 a year
- FreeFree
- Agency$149 a month
- Agency$1,341 a year
- FreeFree
In their own words
DownNotifier.com
DownNotifier.com has no write-up on Specifiction yet; its figures are above.
Visual Sentinel
Visual Sentinel monitors websites and servers, including page changes that ordinary uptime checks may miss. Its monitoring covers uptime, screenshot-based visual comparison, SSL, DNS, performance, content, APIs, endpoints, and servers. For visual checks, it captures a page in a browser and compares the screenshot with a prior baseline. Users can exclude changing page elements with CSS selectors and set the amount of change needed to flag a capture. Failed uptime checks are repeated; a site is marked down only if it fails from all selected regions. Alerts can go to email, Slack, Discord, WhatsApp, Telegram, Microsoft Teams, PagerDuty, OpsGenie, webhooks, Prometheus, and browser push. The REST API manages monitors, incidents, status pages, maintenance windows, reports, and notification channels; API access is listed for Business and Agency. The Free plan costs nothing and includes three monitors, 10-minute checks, and one status page. Solo costs $6 a month. Visual Sentinel is built and operated by Acefina LLC and is intended for small teams, agencies, and site owners.