Side by side
Calibre RUM vs HostTracker
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.
Free trial APIWeb
Calibre RUM offers page-level real-user performance signals and several report filters, with plans priced by sessions. Check session and synthetic-test allocations when choosing a plan.
Visit Calibre RUM
Free plan APIWeb
HostTracker combines external monitoring, rechecks, alerts, and status pages with a broad set of developer integrations. The free plan is narrow in monitor count and check frequency; the trial offers more monitors for 30 days.
Visit HostTrackerThe facts
| Calibre RUM | HostTracker | |
|---|---|---|
| Free plan | A free trial | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Web |
| Lowest paid plan | Starter: $75 a month | Personal: $49 a year |
| Plans published | 3 | 6 |
| Maker | Not published | Not published |
| Website | calibreapp.com | host-tracker.com |
| On synthetic monitoring | #23 of 39 | #7 of 39 |
Calibre RUM: what it does well
- Ranks pages by traffic volume
- Connects performance signals to page elements
- Filters reports by device, browser and country
- RUM script uses no cookies or personal data
- Offers web and API access
What to know first
- No free plan
- Starter includes 5K real user sessions
- Synthetic monitoring stops when monthly test allocation is exhausted
HostTracker: what it does well
- 14 types of monitoring
- Checks are rechecked from other locations
- Every plan includes public status pages
- 15 listed alert channels
- REST API and multiple developer tools
What to know first
- Free plan is limited to two monitors
- Free-plan checks run every 30 minutes
- Trial applies fair-use limits to SMS and API
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