Calibre
Claim this toolWeb performance monitoring and optimization
From $50/mo, billed monthly, free trial Visit WebsiteThe Bottom Line
- Price
- From $50/mo, billed monthly, free trial. Compare plans
Key facts
- Calibre is a web performance monitoring platform for continuous speed testing
- It tracks Core Web Vitals, runs synthetic tests, and provides performance budgets
- Offers paid tiers
Pros
- Web performance monitoring
- Core Web Vitals
- Good alerting
- Performance budgets
- Good documentation
Cons
- Expensive
- Per-test pricing
- Learning curve
- Enterprise focus
- UI complex
What is Calibre?
Available on: Web
Ratings Across the Web
Calibre holds an aggregate rating of 4.6 out of 5 from 113 reviews across G2, SourceForge and Capterra, last checked September 18, 2026.
Ratings aggregated from independent review platforms. Learn more
Key Features
- Web performance
- Core Web Vitals
- Budgets
- Synthetic monitoring
- Competitor tracking
- Alerts
Pricing Plans
15-day Free TrialPricing checked Oct 19, 2026. Source: calibreapp.com/pricing, read Oct 19, 2026
| Plan | Price | Details |
|---|---|---|
| Starter | $50/month | Small teams
+1 more Show less
|
| Team Popular | $150/month | Teams
+1 more Show less
|
| Business | $350/month | Large teams
+1 more Show less
|
Is Calibre worth the price?
Calibre's pricing is fair for the features offered, especially with the clear tier progression.
The Starter tier at $50/month is a good entry point for small teams, while the Team tier at $150/month offers significant value with API access and integrations. It's best for businesses that prioritize web performance and need scalable monitoring solutions.
Hidden Costs & Gotchas
Potential overage fees for 'more tests' on Team tier
How Calibre's pricing compares
At $50/mo, billed monthly, Calibre is mid-range of its 3 comparable direct competitors ($19 to $139.95/mo across the set).
Not ranked, different unit or currency: Datadog $18/host/mo, billed yearly; PRTG $150/mo, billed yearly.
Entry paid plan, monthly price, billed monthly. Pricing checked Oct 19, 2026.
Calibre by the numbers
Toolradar data: Calibre's entry paid plan ($50/mo, billed monthly) ranks #55 of 73 (joint) for price among the Monitoring tools with a verified entry price and no stated unit, where the median is $20/mo. As of Oct 2026.
| Metric | Calibre | Peer median | Position (1 is best) |
|---|---|---|---|
| Entry paid plan | $50/mo, billed monthly | $20/mo | #55 of 73 (joint) tools with no stated price unit, verified price |
| Free plan | No | 64% have one | n/a |
| Listed as an alternative to | 3 tools | 2 | #82 of 210 (joint) |
| Integrations listed | 3 | 2 | #6 of 48 (joint) tools with at least one integration recorded |
| User rating | 4.6/5 (across the web, 113 ratings) | 4.5/5 | #29 of 94 (joint) tools with 20+ reviews |
Each position is counted among the tools that have data for that row, as noted under it. A lower entry price ranks higher; prices are read on vendor pages and compared only with tools priced on the same basis. All Monitoring data · How we compute this. Advertising and placement fees are not inputs to any position.
Cite this: Toolradar, “Calibre by the numbers”, Oct 2026.
Reviews
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Across 113 verified user reviews on SourceForge, Capterra, G2
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Calibre FAQ
How does Calibre help maintain website speed over time?
Which teams benefit most from using Calibre?
How does Calibre compare to Datadog for performance monitoring?
What kind of data does Calibre provide for web performance analysis?
How is Calibre priced?
What are the primary trade-offs when considering Calibre?
Can Calibre monitor more than just page load metrics?
How does Calibre pricing compare with other Monitoring tools?
Source: calibreapp.com