What is SpeedCurve?
SpeedCurve is a synthetic and real-user web performance monitoring platform built specifically for tracking page speed over time. It runs scheduled Lighthouse audits and WebPageTest runs, captures filmstrips and waterfalls, and exposes Core Web Vitals trends through dashboards designed for performance teams. Founded in 2014 and bootstrapped by Mark Zeman, SpeedCurve carved out a niche among performance specialists who wanted more than what's in PageSpeed Insights' free tier.
SpeedCurve's strength is depth: budgets per metric, page comparisons, video filmstrips, and integration with WebPageTest's scriptable tests. Its weakness is price: plans start at $249/month, and serious page coverage (more than ~10 pages) pushes pricing well into the $1,000s. For SaaS companies with 50+ marketing pages or e-commerce sites with thousands of category pages, SpeedCurve gets expensive fast.
When SpeedCurve is the right tool
SpeedCurve is excellent, and reasonably priced for what it does, when these conditions match:
- You're a performance specialist, not a generalist. SpeedCurve assumes the user knows what RUM, TTFB, and LCP mean and wants control over budget thresholds, comparison snapshots, and per-page configurations. The depth is the product.
- Page count is small. For 5-20 critical pages (homepage, category, product detail, checkout), SpeedCurve's per-URL pricing model is fair. Beyond that, costs scale linearly.
- You want WebPageTest-grade depth. SpeedCurve was built around WebPageTest and exposes filmstrips, video, request waterfalls, and connection-level timing. If you want the kind of forensic detail performance engineers love, SpeedCurve has it.
- RUM matters and you have traffic. SpeedCurve's LUX product (RUM) needs JavaScript on your pages and meaningful traffic to produce signal. For high-traffic sites, the field data is genuinely useful for ranking and prioritizing optimizations.
Where SpeedCurve gets expensive or limiting
- Pricing scales linearly with page count. Per-URL monthly cost adds up: 50 monitored pages can cost $1,000+/month. For sites with hundreds of templates, the spend balloons.
- No load testing. SpeedCurve measures real-user and synthetic page performance. It doesn't simulate concurrent users to validate that the site stays fast under traffic. For pre-launch capacity validation, you need a separate tool.
- No API monitoring. SpeedCurve focuses on browser-based performance. For multi-step API workflows (login → token → call), you need a dedicated API monitoring tool.
- Steep learning curve. SpeedCurve's depth is also its complexity. Marketing teams and product managers find the dashboards dense; performance engineers love them.
- No native AI-generated explanations. Output is rich metrics and visualizations, interpretation is on you. For shareable summaries that translate "p95 LCP rose 18%" into a paragraph your PM can read, you need either a separate tool or a human writer.
LoadFocus vs SpeedCurve: feature comparison
The table below compares LoadFocus against SpeedCurve's core synthetic + RUM offering. Pricing accurate as of May 2026.
| Feature | LoadFocus | SpeedCurve |
|---|---|---|
| Entry-tier pricing | Free; paid from $19/mo | From $249/mo (Lite) |
| Lighthouse-based synthetic audits | Yes. 25+ regions on schedule | Yes (LUX Synthetic) |
| WebPageTest integration | No | Yes (deep) |
| Real-user monitoring (RUM) | Limited (synthetic-first) | Yes (LUX RUM) |
| Page coverage at $200-300/mo tier | Hundreds of pages | ~10 pages |
| Core Web Vitals tracking | Yes (LCP, INP, CLS) | Yes (LCP, INP, CLS) |
| Performance budget alerts | Yes (custom thresholds) | Yes (per-metric) |
| Video filmstrips | No (snapshots only) | Yes |
| Load testing (concurrent users) | Yes. JMeter + k6 | No |
| Multi-step API monitoring | Yes (login → token → call) | No |
| AI-generated test analysis | Yes (all paid plans) | No |
| Free tier with cloud audits | Yes | 14-day trial only |
When LoadFocus is the right alternative for SpeedCurve users
Page count exceeds your SpeedCurve budget
SpeedCurve's per-URL pricing is fair for small page sets but punishes scale. If you're monitoring 50+ pages, LoadFocus' page-count-flexible pricing is meaningfully cheaper at the same audit frequency. The same Lighthouse-based synthetic data, fewer line items on the invoice.
You also need load testing
Page speed regressions and load-induced regressions correlate. Investigating both in two separate tools is wasted time. LoadFocus combines Lighthouse-based speed monitoring with JMeter and k6 load testing in one platform, same dashboard, same alerting.
You need API monitoring on the same platform
SpeedCurve doesn't do API monitoring. If your stack has APIs that need scheduled health checks (status, latency, response shape, multi-step workflows), LoadFocus does both browser performance and API monitoring in one product, replacing SpeedCurve plus a separate API tool.
Your team needs simpler dashboards
SpeedCurve is built for performance specialists. If non-engineers (product, marketing, ops) need to read your dashboards, LoadFocus' UI is more approachable and the AI-generated test summaries explain what changed in plain language.
You want a free tier that includes cloud audits
SpeedCurve offers a 14-day trial, useful for evaluation but not for ongoing low-tier use. LoadFocus has a real free tier with scheduled Lighthouse audits included, easier to validate without a budget conversation.
Migration: from SpeedCurve to LoadFocus
Migrating SpeedCurve synthetic audits to LoadFocus is straightforward:
- Sign up at loadfocus.com/signup.
- For each SpeedCurve URL, create a LoadFocus website-speed-test schedule with the same URL and frequency (daily, hourly, etc.).
- Copy your performance budgets (LCP under X ms, CLS under Y) into LoadFocus alert thresholds.
- Replicate alert routing (Slack, PagerDuty, email).
- Run both tools in parallel for two weeks to validate the data matches, then sunset SpeedCurve.
RUM (LUX) data doesn't migrate directly, if you're using SpeedCurve's RUM heavily, LoadFocus' RUM is more limited. Many teams keep a small SpeedCurve plan just for RUM and use LoadFocus for synthetic + load testing + API monitoring.
FAQ: LoadFocus vs SpeedCurve
Is LoadFocus cheaper than SpeedCurve at scale?
For most use cases, yes, meaningfully. SpeedCurve's $249/mo Lite plan covers ~10 pages; LoadFocus at the same price covers hundreds of monitored pages. For 50+ page sites the difference is multiples, not percentages.
Does LoadFocus integrate with WebPageTest?
Not natively. SpeedCurve's WebPageTest integration is unique, if filmstrips, video, and the WebPageTest connection-level metrics are essential for your workflow, SpeedCurve remains the right tool. LoadFocus uses Lighthouse, which covers Core Web Vitals and most performance audits but doesn't expose WebPageTest's depth.
Can LoadFocus replace SpeedCurve's RUM?
For most teams, no. SpeedCurve's LUX RUM is significantly more developed. LoadFocus is synthetic-monitoring-first; if RUM is your primary use case, SpeedCurve is better. If synthetic monitoring is your primary use case (and most CWV work is), LoadFocus is cheaper and faster to set up.
How do the Core Web Vitals dashboards compare?
Both tools show LCP/INP/CLS trends with budget thresholds. SpeedCurve's are more polished and offer per-page comparisons; LoadFocus' are simpler but cover the same key metrics. For most SEO-driven CWV work, both are sufficient, the differentiator is price at scale.
Does LoadFocus support performance budgets?
Yes. Set thresholds per metric (LCP under 2.5 s, CLS under 0.1, etc.) and LoadFocus alerts when audits breach them. Same workflow as SpeedCurve's budgets, different UI.
Can I export LoadFocus data to my own dashboards?
Yes. LoadFocus exports to Prometheus, InfluxDB, Datadog, and webhooks. Most teams pipe results into existing observability dashboards rather than living in any single tool's UI.
Try LoadFocus free
If SpeedCurve's price-per-page model is forcing you to monitor fewer pages than you want, or if you're paying for SpeedCurve plus separate load-test and API-monitoring tools. LoadFocus combines synthetic CWV monitoring + load testing + API monitoring in one platform. Sign up at loadfocus.com/signup and run your first scheduled audit in under five minutes.
