Updown.io gives 100,000 free credits on signup (~1 month). After that, you pay per check (~€0.60/month per site). PingZen is free forever with unlimited monitors.

How does Updown.io pricing work?

You buy credits. Each check costs 1 credit. 1-minute checks cost ~€0.60/month per site. Faster checks cost more. PingZen is simply free with no credit system.

Does Updown.io have status pages?

No built-in status pages. PingZen includes branded public status pages for free.

Does Updown.io support IPv6?

Yes, Updown.io has native dual-stack IPv4/IPv6 support. This is a unique advantage for IPv6-dependent infrastructure monitoring.

PingZen vs Updown.io: Free Unlimited Monitoring vs Pay-per-Check

Updown.io is a French bootstrapped monitoring service by Adrien Rey-Jarthon. It uses a unique pay-per-check credit model (~€0.60/month for 1 site at 1-minute intervals). Supports HTTP, TCP, ICMP, SSL, domain expiry, and heartbeat checks from 8 global nodes with dual-stack IPv4/IPv6.

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Quick Comparison

Best Value

PingZen

Price: Free forever
Intervals: 30 seconds
Protocols: 22 protocols
Alerts: 12+ channels

Updown.io

Price: Pay-per-check (~€0.60/month/site)
Intervals: 15 seconds (paid)
Protocols: 6 (HTTP, TCP, ICMP, SSL, Domain, Heartbeat)
Alerts: Email, SMS, Slack, Telegram, webhooks

Feature Comparison

Feature Comparison
Feature	PingZen	Updown.io
HTTP/HTTPS monitoring
TCP monitoring
Ping (ICMP)
SSL certificate monitoring
Domain expiry monitoring
Heartbeat/cron monitoring
IPv6 dual-stack
DNS monitoring
WebSocket monitoring
gRPC monitoring
SMTP monitoring
FTP monitoring
DNSBL monitoring
Telegram alerts
Slack integration
Public status pages
Incident management
Bitcoin payments

Why Choose PingZen

22 protocols vs 6 — DNS, WebSocket, gRPC, SMTP, FTP, DNSBL, and more
Unlimited free monitors vs pay-per-check credits
Public status pages and incident management
Predictable pricing (free) vs variable credit costs
Real-time WebSocket dashboard
Team workspaces with role-based access

When Updown.io is Better

Pay only for what you use — most flexible pricing
Dual-stack IPv6 support built-in
15-second check intervals available
Multi-location confirmation prevents false positives
REST API for CI/CD integration
Bitcoin payment accepted

Not sure about PingZen vs Updown.io?

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Migration Tip

Updown.io is ideal for developers wanting pay-per-check flexibility and IPv6. PingZen is better for teams wanting unlimited free monitors, 22 protocols, and status pages without credit management.