Little Warden vs Treo in 2026: broad site-integrity alerting vs Core Web Vitals monitoring built on real CrUX data
Little Warden watches 30+ site-integrity signals from £24.99 a month with no free tier. Treo does one thing, Core Web Vitals via real Chrome UX Report data plus Lighthouse, and actually has a free plan before its steep jump to $75 a month.
Little Warden
Treo- Treo has a genuine free tier (1 site, limited Lighthouse); Little Warden has no free tier at all, only a 40-day trial before billing starts.
- Treo pulls real Chrome UX Report (CrUX) field data alongside Lighthouse lab scores specifically for Core Web Vitals; Little Warden checks Core Web Vitals as one of 30+ broader checks and does not distinguish field data from lab data.
- Treo supports competitive benchmarking, comparing Core Web Vitals scores against competitor domains on paid plans; Little Warden has no competitor-comparison feature, it only monitors the sites you add.
- Treo discovers URLs automatically via sitemap scanning with no manual setup; Little Warden requires you to add each URL you want patrolled.
- Little Warden covers domain expiry, SSL certificates, robots.txt, and tracking tags, none of which Treo monitors; Treo is exclusively focused on Core Web Vitals and page speed.
- Treo's pricing jumps steeply from Free to $75/month at the Vital tier; Little Warden's entry paid tier is cheaper at £24.99/month but has no permanent free option to fall back on.
- Neither tool offers white-label reporting or tracks AI search visibility; both are traditional technical monitoring tools with no AI answer citation coverage.
Little Warden and Treo both appeal to agencies watching a portfolio of client sites, but they specialize in different directions. Little Warden runs 30-plus pre-built checks, domain expiry, SSL status, robots.txt changes, redirect breakage, tracking tag removal, and treats Core Web Vitals as just one of them. Treo is built entirely around Core Web Vitals, pulling real Chrome UX Report field data alongside Lighthouse lab scores, with automated sitemap discovery and competitive benchmarking against other domains. Treo has a genuine free tier that Little Warden lacks, but its paid plans jump steeply to $75/month once you need more than one site. Little Warden costs less to start (£24.99/month) but never goes free. The two rarely need to be an either-or choice: one is a general-purpose alerting layer, the other a performance specialist.
The tools at a glance
Little Warden
Website change monitoring tool that alerts you before domain expiry, SSL issues, or critical SEO changes cost your clients rankings
Little Warden catches the preventable failures that quietly damage client relationships: a domain lapses because a renewal notice got buried, an SSL certificate expires over a long weekend, a robots.txt edit blocks a section by accident. It runs 30-plus pre-configured checks across a portfolio of URLs on a schedule and routes alerts to Slack, email, webhooks, or API.
Plans scale by URL count: Freelancer covers 20 URLs for £24.99/month, Agency covers 650 for £59.99/month. Core Web Vitals sits in the check library alongside domain, SSL, redirect, and tracking-tag monitoring, but it is treated as one signal among many rather than a dedicated performance discipline.
There is no free tier at any point, only a 40-day trial before the meter starts. In exchange, you get a wider net of checks than a performance-only tool would ever attempt, at the cost of not going particularly deep on any single one of them.
| Feature | Freelancer £24.99/month | Small Team £34.99/month | Agency £59.99/month | Large Agency £149.99/month |
|---|---|---|---|---|
| URLs patrolled | 20 | 100 | 650 | 5,000 |
| Data retention | 2 weeks | 1 month | 3 months | 6 months |
| Checks per URL | Up to 10 | Up to 15 | Up to 20 | Up to 30 |
| API access | ✗ | ✓ | ✓ | ✓ |
| Slack alerts | ✓ | ✓ | ✓ | ✓ |
Treo
Core Web Vitals monitoring using real-world Chrome UX Report data.
Treo is built specifically around Core Web Vitals, and it earns that focus by pulling field data from the Chrome UX Report rather than relying solely on synthetic Lighthouse tests. CrUX reflects how real Chrome users experienced a page over the past 28 days, which matters because a clean lab score can still mask slow LCP or layout shifts that real visitors actually feel.
URL discovery happens automatically through sitemap scanning, so there is no manual list to maintain. Competitive benchmarking lets you track Core Web Vitals against named competitor domains on paid plans, and the multi-site dashboard scales to hundreds of domains, which makes it genuinely viable as a portfolio-level monitoring layer for agencies rather than a single-site tool.
The Free plan covers one site with limited Lighthouse checks, useful for evaluating data quality before committing. The jump to Vital at $75/month for up to five sites is steep for what is fundamentally a monitoring layer on top of public CrUX data, and CrUX itself only covers URLs with enough real-user traffic, so new or low-traffic pages may show no field data at all.
| Feature | Free $0/month | Vital $75/month | Pro $185/month | Scale $375/month | Enterprise Contact for pricing |
|---|---|---|---|---|---|
| Sites monitored | 1 | Up to 5 | Up to 15 | Up to 50 | Custom |
| CrUX field data | Yes | Yes | Yes | Yes | Yes |
| Competitive benchmarking | No | Yes | Yes | Yes | Yes |
| API access | No | Yes | Yes | Yes | Yes |
Head-to-head feature comparison
| Feature | Little Warden | Treo |
|---|---|---|
| Overall score | 7.8 / 10 | 8.2 / 10 |
| Domain / SSL expiry monitoring | Yes, core feature | No |
| Core Web Vitals monitoring (CrUX field + Lighthouse lab data) | Limited, 1 of 30+ checks, no CrUX field data | Yes, core feature (CrUX field data + Lighthouse lab data) |
| Automated URL discovery (sitemap scanning) | No, URLs added manually | Yes, core feature |
| Competitive benchmarking | No | Yes, on paid plans |
| Multi-site dashboard | Yes, patrols a portfolio of URLs | Yes, up to hundreds of domains |
| Multi-channel alerts (Slack/webhook) | Yes (Slack, email, webhook, API) | No, no Slack/webhook alerting mentioned |
| White-label reporting | No | Not offered |
| API access | Yes (Small Team plan and above) | Yes (Vital plan and above) |
| Free tier | No, 40-day trial only | Yes, 1 site with limited Lighthouse |
| Starting price | £24.99/mo | $0/mo (paid plans start at $75/mo) |
Which should you choose?
Little WardenTreoTreoTreoLittle WardenTreoLittle WardenThe two tools split cleanly along breadth versus depth. Little Warden trades performance depth for breadth of coverage, one Core Web Vitals check among 30, in exchange for catching the kind of failure (an expired domain, a blocked robots.txt) that a performance-only tool like Treo will never see coming because it is not looking. Treo trades that breadth for genuine depth on one metric family, using real CrUX field data rather than synthetic scores alone, plus competitive benchmarking that turns a raw LCP number into a client-facing comparison. Treo's free tier makes it an easy first step even for a single site; Little Warden only makes sense once you are managing enough client URLs that manual checking has become the actual risk.
Bottom line
Start with Treo's free plan if Core Web Vitals is your immediate concern and you want to see real CrUX data on a single site before paying anything. Move to Little Warden once you are managing a portfolio of client sites and need someone watching for the failures that have nothing to do with page speed: expired domains, lapsed SSL certificates, a robots.txt edit that quietly deindexes a section. For an agency running client Core Web Vitals reporting at scale, Treo's Vital plan at $75/month plus Little Warden's Freelancer tier at £24.99/month together cost less than SpeedCurve's entry tier and cover more ground between them than either tool does alone.
Frequently asked questions
Does Treo have a free plan and does Little Warden?
Treo has a genuine free tier covering one site with limited Lighthouse audits, with paid plans starting at $75/month for up to five sites. Little Warden has no free tier at all, only a 40-day free trial before billing begins, though its cheapest paid plan at £24.99/month is less expensive than Treo's entry paid tier.
What is the difference between Treo's Core Web Vitals data and Little Warden's?
Treo pulls real Chrome UX Report (CrUX) field data alongside Lighthouse lab scores, reflecting how actual Chrome users experienced a page over the past 28 days. Little Warden treats Core Web Vitals as one of its 30-plus site-integrity checks and does not distinguish field data from lab data the way Treo does.
Can Little Warden benchmark my site against competitors like Treo can?
No, Little Warden has no competitor-comparison feature, it only monitors the URLs you add for your own sites. Treo's competitive benchmarking, available on paid plans, lets you track Core Web Vitals scores against named competitor domains using the same CrUX data source.
Does Treo monitor domain expiry or SSL certificates like Little Warden does?
No, Treo has no domain or SSL monitoring in its feature set, it is exclusively focused on Core Web Vitals and page speed. Little Warden covers domain and SSL certificate expiration as one of its core 30-plus checks and sends advance warnings before either lapses.
Is Treo worth it if my site does not get much traffic?
It depends on whether CrUX has enough data to work with. CrUX only covers URLs with sufficient real-user traffic in Chrome, so new or low-traffic pages may show no field data at all, Treo will still display Lighthouse lab data for those pages, but the field-data advantage that makes Treo distinctive will be limited on a low-traffic site.
Which tool is better for an agency managing many client sites?
It depends on what you are managing for. Treo's multi-site dashboard and automated sitemap scanning scale well for Core Web Vitals monitoring across hundreds of domains, while Little Warden's portfolio plans (up to 5,000 URLs on Large Agency) are built for catching a broader range of integrity issues, domain expiry, SSL, robots.txt, across the same scale. Agencies delivering Core Web Vitals as a specific client report should lean Treo; agencies wanting a general safety net across everything should lean Little Warden.