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About

PerfDelta is a web-based website speed testing and monitoring service for SEO specialists, agencies, and in-house web teams. Its free test scans up to three pages on mobile and desktop, combining real-user Core Web Vitals from the Chrome UX Report with Lighthouse lab measurements. Reports compare a site with up to two competitor domains and a benchmark of previously tested sites, show page-weight breakdowns and request timelines, identify site technologies, and estimate savings in prioritized recommendations naming affected files. Paid plans add scheduled monitoring, performance budgets, email alerts, report history, and PDF exports; Agency and Scale plans also provide CSV export, public dashboards, and a REST API. MCP access lets compatible AI agents request tests and retrieve results. Reports can be shared with clients for performance audits and ongoing site work.

About

Uptime Tracker monitors websites, APIs, servers and scheduled jobs around the clock, rechecking failures before sending alerts to help distinguish outages from brief network errors. It supports HTTP(S) and keyword checks, SSL certificates, TCP ports, DNS records, ping, domain expiry, authenticated API tests with JSON assertions, multi-step API workflows, gRPC, SMTP, IMAP and heartbeat monitoring for cron jobs and backups. Alerts can be routed through rules to email, SMS, Slack, Microsoft Teams, Discord, Telegram, Google Chat, PagerDuty, Pushover, ntfy, Gotify, Mattermost, Rocket.Chat and webhooks, with on-call schedules and escalation. The service includes incident timelines, maintenance windows, reports and hosted status pages on custom domains. Individuals, developers, SaaS teams, agencies, freelancers, online stores and small businesses can use it to monitor services and communicate availability. A free plan includes two monitors; paid plans start at $9 per month.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

SEO specialists, agencies, and in-house web teams.

Audience

Developers, SaaS teams, agencies, online stores and small businesses running websites and APIs.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

€23/month
A free plan is available. The Solo plan costs €23/month net with monthly billing, or €230/year net with annual billing. Higher plans add scheduled monitoring, alerts, report history, exports, and API access.
Free Version Supported
Free Trial Not Supported

Pricing

$9/month
Free plan: $0/month, with 2 monitors, 5-minute checks, 5 heartbeat monitors, and 1 public status page. Pro: $9/workspace/month or $90/workspace/year, with 10 monitors, 60-second checks, 2 seats, and 3 projects. Team: $49/workspace/month or $490/workspace/year, with a 14-day free trial. SMS uses prepaid credit. Prices are in USD and exclude tax.
Free Version Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

PerfDelta
Founded: 2026
Berlin, Germany
perfdelta.com

Company Information

Uptime Tracker
Founded: 2026
Bulgaria
uptimetracker.live

Alternatives

Alternatives

Categories

Speed Test Supported

PageSpeed Insights tests one URL and shows one score. PerfDelta tests three pages per run, puts the results next to up to two competitors and a benchmark of every domain tested so far, and keeps the history of every measurement. The free test needs no account.

Website Monitoring Supported

Core Web Vitals monitoring with competitor benchmarks and alerts. Paid plans monitor 25 to 500 URLs daily or weekly, every 6 hours from Agency, with daily CrUX field data, 3 to 10 tracked competitors, performance budgets per project and URL, email alerts when a score drops by 10 points or more and a weekly report.

Categories

API Monitoring Supported
Website Monitoring Supported

Website Monitoring Features

Availability Testing Not Supported
Event Logs Not Supported
Event-Based Notifications Supported
FTP Monitoring Not Supported
Mail Server Monitoring Not Supported
Maintenance Scheduling Not Supported
Performance Metrics Supported
Real Time Monitoring Not Supported
Transaction Monitoring Not Supported
Uptime Reporting Not Supported

Integrations

Apple Calendar Not Supported
ChatGPT Supported
Claude Supported
Cursor Supported
Discord Not Supported
GitHub Actions Not Supported
Google Calendar Not Supported
Google Chat Not Supported
Jenkins Not Supported
Lighthouse Supported
Mattermost Not Supported
Microsoft Teams Not Supported
Model Context Protocol (MCP) Supported
PagerDuty Not Supported
Pushover Not Supported
Rocket.Chat Not Supported
Slack Not Supported
Telegram Not Supported
Uptime Kuma Not Supported
Zapier Supported

Integrations

Apple Calendar Supported
ChatGPT Not Supported
Claude Not Supported
Cursor Not Supported
Discord Supported
GitHub Actions Supported
Google Calendar Supported
Google Chat Supported
Jenkins Supported
Lighthouse Not Supported
Mattermost Supported
Microsoft Teams Supported
Model Context Protocol (MCP) Not Supported
PagerDuty Supported
Pushover Supported
Rocket.Chat Supported
Slack Supported
Telegram Supported
Uptime Kuma Supported
Zapier Not Supported
Claim PerfDelta and update features and information
Claim PerfDelta and update features and information
Claim Uptime Tracker and update features and information
Claim Uptime Tracker and update features and information