Side by side
Downdetector vs Perfmatters
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 Paid Self-hosted
Perfmatters provides detailed WordPress performance controls across scripts, databases, media, and CSS. Review the yearly renewal terms and the absence of monitoring features alongside the optimisation toolkit.
Visit PerfmattersThe facts
| Downdetector | Perfmatters | |
|---|---|---|
| Free plan | Yes | No |
| Open source | Not published | Not published |
| Runs on | Android, API, iPhone, Web | Self-hosted |
| Lowest paid plan | Pro: $13.99 a month | 1 Site – Personal: $29.95 a year |
| Plans published | 3 | 3 |
| Maker | Not published | Not published |
| Website | downdetector.com | perfmatters.io |
| On website monitoring software | #5 of 55 | #51 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
Perfmatters: what it does well
- Per-page and device script controls
- Scheduled database cleanup
- Lazy loads multiple media types
- Supports WebP and AVIF
- Includes developer support and documentation
What to know first
- Paid self-hosted WordPress plugin
- Licenses renew yearly
- Auto-renew is enabled by default
- No SSL or latency monitoring
Alternatives to Downdetector Alternatives to Perfmatters The whole list