updown.io

Simple, inexpensive, and developer-focused uptime monitor with a pay-as-you-go model, dual-stack IPv6 support, and cron checking.

About updown.io

updown.io is a minimalist, highly efficient monitoring tool built specifically for developers who want a straightforward, no-nonsense approach to uptime tracking. Stripping away bloated enterprise features, it focuses entirely on executing fast, reliable HTTP, TCP, and ICMP checks. The platform is widely respected for its clean API, elegant user interface, and completely transparent pricing structure.

Uniquely, updown.io operates on a pay-as-you-go credit system rather than fixed monthly tiers. This allows developers to monitor a massive number of endpoints infrequently, or a few endpoints at high frequency, paying only for the exact computational requests utilized.

Key Features

Feature 1: Dual-stack monitoring with full IPv4 and IPv6 support.
Feature 2: Flexible checking intervals ranging from 15 seconds to 1 hour.
Feature 3: Pulse (Cron) monitoring for background tasks and scripts.
Feature 4: Comprehensive, developer-friendly REST API.
Feature 5: Text string matching to verify exact page content.
Feature 6: Multi-location routing for reliable outage confirmation.

Pricing

Pay-As-You-Go Model: Pricing is entirely credit-based.
200,000 requests cost €5 (approx. $5.49) / month.
500,000 requests cost €10 / month.
Users can purchase credits with standard cards or cryptocurrency.

Use Cases

Lightweight API and website availability polling
IPv6 infrastructure validation
Cost-effective bulk endpoint monitoring
Script and cron job execution verification

Pros & Cons

Pros:

Extremely cost-effective pay-as-you-go pricing model
Clean, fast UI with an excellent developer API
Native support for IPv6 and cryptocurrency payments

Cons:

Lacks complex multi-step synthetic transaction testing
No native on-call scheduling or advanced incident routing

Integrations

Slack, Telegram, Discord, Webhooks, SMS, Zapier

FAQ

How does the pricing model work?

updown.io uses a credit system where you pay per request. You buy credits in bulk (e.g., €5 for 200k requests), and they are consumed based on how many monitors you have and how frequently they run.

Does updown.io support IPv6?

Yes, the platform fully supports IPv6 monitoring, allowing you to test dual-stack infrastructure accurately.

What is Pulse monitoring?

Pulse is updown.io's version of heartbeat or cron monitoring. Your server pings updown.io to confirm a scheduled task ran; if the ping doesn't arrive in time, you get an alert.

Can I verify the content of my website?

Yes, you can configure a string match. The monitor will check if a specific word or phrase is present in the HTML response to ensure the page loaded correctly.