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Assertible vs Dotcom-Monitor

Both stand on synthetic monitoring. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Assertible

Free plan APIWeb

Choose Assertible if you need HTTP service checks, deployment smoke tests, or API test synchronization with common specification formats and Postman collections. Look elsewhere if the Personal plan's service, test, result, or team limits do not fit; paid plans start at $25 a month.

Visit Assertible

Dotcom-Monitor

Free plan AndroidAPIiPhone+4

Dotcom-Monitor offers target monitoring with multiple alert routes and plan limits that vary by tier. Compare the free plan's locations and retention with the subscription or Enterprise features you need.

Visit Dotcom-Monitor

The facts

AssertibleDotcom-Monitor
Free planYesYes
Open sourceNot publishedNot published
Runs onAPI, WebAndroid, API, iPhone, Linux, Self-hosted, Web, Windows
Lowest paid planStandard: $25 a monthPerformance Counters MetricsView: $13.33 a month
Plans published48
MakerNot publishedDotcom-Monitor
Websiteassertible.comdotcom-monitor.com
On synthetic monitoring#4 of 43#1 of 43

Assertible: what it does well

  • Creates HTTP assertions and shows request details and results.
  • Runs smoke tests automatically after deployment to staging or production.
  • Imports and syncs tests with OpenAPI, Swagger, and Postman.
  • Integrates with GitHub, Slack, PagerDuty, and Zapier.
  • Free tier can be used indefinitely.

What to know first

  • The free Personal plan allows two web services and 10 tests per service.
  • Personal retains 1,000 results and supports one to two members.
  • Shorter monitoring intervals are available on paid plans.
  • Paid plans start at $25 a month.

Dotcom-Monitor: what it does well

  • Free plan includes up to 25 targets
  • Checks can run as frequently as every five minutes on Free
  • Lists SSL expiry, keyword, and server monitoring
  • Alerts include email, SMS, webhooks, and Slack
  • Available on web, desktop, and mobile platforms

What to know first

  • Free plan has two monitoring locations
  • Free plan retains data for seven days
  • Subscription pricing varies by platform, target count, and frequency

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