About Healthchecks.io

Healthchecks.io is an online service for monitoring regularly running tasks such as cron jobs. It uses the Dead man's switch technique: the monitored system must "check in" with Healthchecks.io at regular, configurable time intervals. When Healthchecks.io detects a missed check-in, it sends out alerts.

Who Runs This

Healthchecks.io is a product of SIA Monkey See Monkey Do, currently a one-man software and consulting company. The one man is Pēteris Caune, a long time Python developer from Valmiera, Latvia. Mastodon, Github.

Goals and Values

1. Do one thing and do it well: alert when something does not happen on time. Focus on clean and quick UIs, reliable APIs, and user happiness. In technology choices, prefer simple and boring.
2. Respect the user's time and privacy. Don't send marketing emails. Don't make the "Close Account" function hard to find. Don't use any JS-based analytics.
3. Monitoring for everyone. Healthchecks.io is free for hobby use, for open source projects, and for non-profits. Healthchecks is free software, and can be self-hosted.

Open Source

Healthchecks.io is an open-source project. The code is on GitHub. It has BSD license and is accepting contributions.

Healthchecks.io donates 5% of its monthly recurring revenue to open-source projects it relies on directly and indirectly. We use Github Sponsors for the majority of the donations.

Open Data

Here are a few metrics about the service (updated manually, last updated: April 2, 2024).

Years in business	8	years
№ of free accounts	27 300	accounts
№ of open source and non-profit accounts	61	accounts
№ of paying accounts	643	accounts
Monthly recurring revenue	13 700	USD
№ of services monitored (checks)	138 000	checks
№ of pings/day	36 900 000	processed pings
№ of notifications/day	39 700	sent notifications

8	years in business
27 300	free accounts
61	open source & non-profit accounts
643	paying accounts
13 700	USD monthly recurring revenue
138 000	checks (services monitored)
36 900 000	pings processed per day
39 700	notifications sent per day

Reliability Guarantees

The service currently runs on Hetzner bare metal servers, with healthy excess capacity to handle traffic spikes. The app servers are load-balanced. The PostgreSQL database has a hot standby as well as full daily backups to S3. The database fail-over process is manual, and the ops team consists of a single person, so multi-hour or even multi-day outages are possible!

As a business, Healthchecks.io is profitable and sustainable.

In case of incidents, we post status updates to our status page, status.healthchecks.io, and our Mastodon account, @healthchecks_io@fosstodon.org.

While we can only guarantee the best effort availability, in practice, the availability has exceeded 99.9% since the service publicly launched in July 2015.

Contact

Email: contact@healthchecks.io
Mastodon: @healthchecks_io@fosstodon.org

Mailing address:

SIA Monkey See Monkey Do
Matīsa iela 61A - 20
Rīga, LV-1009
Latvia