Side by side
Downdetector vs GTmetrix
Both stand on website monitoring software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIiPhone+1
Downdetector combines public outage reporting with monitoring and communication tools for organizations. The free plan is limited by favorite and notification caps, while Explorer and Communicate add business-focused capabilities.
Visit Downdetector Free plan APIWeb
Choose GTmetrix for detailed page diagnostics, recurring checks, and options to test from multiple locations and devices. The free option provides a way to start, while teams needing seats should look at Expert; API users should account for credit limits and plan allowances.
Visit GTmetrixThe facts
| Downdetector | GTmetrix | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, API, iPhone, Web | API, Web |
| Lowest paid plan | Pro: $13.99 a month | Lite: $4.99 a month |
| Plans published | 3 | 6 |
| Maker | Not published | Not published |
| Website | downdetector.com | gtmetrix.com |
| On website monitoring software | #5 of 55 | #9 of 55 |
Downdetector: what it does well
- Status updates every four minutes
- Free plan supports up to five favorites
- Explorer offers geographic breakdowns and alerts
- Communicate supports customer-facing status updates
What to know first
- Free notifications have daily limits
- Pro costs $13.99 a month
- Ookla licenses Downdetector data to business customers
GTmetrix: what it does well
- Real Chrome tests measure observed page performance.
- Waterfalls show request timing, status, size, and headers.
- Reports combine scores, Web Vitals, and impact-ranked audits.
- Tests cover 28 locations and over 55 simulated devices.
- Monitoring supports schedules, history graphs, and alerts.
What to know first
- Lite limits users to 50 on-demand tests each month.
- Lite and Core do not include hourly monitoring or team seats.
- API analysis requests consume credits.
- Unlimited on-demand testing is subject to fair use.
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