SiteGauge vs ChangeTower

It depends on what you weigh. ChangeTower may carry a lower headline price, while SiteGauge bundles AI change categorisation and unlimited free viewer seats into its paid plans, and adds tamper-evident audit evidence on Business and Enterprise. If you would otherwise pay per seat or bolt on compliance tooling, SiteGauge is often better value despite a higher sticker price. The pricing tables above break down each tier.

We have not run a head-to-head test, so we will not claim one. SiteGauge checks with a four-stage pipeline, can capture desktop and mobile views, and can switch to a residential browser when a plain fetch is blocked, which reaches many bot-protected pages but not every one. For how ChangeTower handles this, see the feature table and scorecard above, taken from our research on ChangeTower's own pages. The surest test is to point both tools at the same pages for a few weeks.

Both monitor websites for visual, content, and HTML changes and keep a history. ChangeTower emphasizes affordable archiving, plain-language AI alert conditions, and broad Zapier-based automation, while SiteGauge adds AI change summaries with categorisation and importance scoring, residential rendering for bot-protected sites, native Slack/Teams/webhook plus an API, and tamper-evident audit evidence (Business and Enterprise plans).

SiteGauge is generally better for competitor monitoring because its AI categorises changes (pricing, messaging, product, SEO) and scores their importance, so you see what matters without manually triaging raw diffs. ChangeTower's relaunched plain-language conditions decide which changes trigger an alert, but the changes that do arrive are not categorised or importance-scored, so ranking them is still up to you.

Yes. ChangeTower offers a free plan that monitors 3 pages with daily checks and 30-day history. SiteGauge also has a free plan (5 monitors, 150 checks, daily checks, 30-day history).

ChangeTower's paid plans are Lite $12/mo (25 pages), Essential $36/mo (100 pages, hourly), and Business $78/mo (200 pages, hourly checks, 6-month history, direct Slack alerts and MCP), plus custom Enterprise pricing; annual billing saves 20%. Pricing is based on the number of monitored pages rather than check volume.

At the entry level, yes, ChangeTower's $12 Lite and $36 Essential undercut SiteGauge's $24 Standard and $99 Pro on headline price. However, SiteGauge prices by check volume and includes AI analysis, native integrations, and audit evidence (Business and Enterprise plans), so the better value depends on whether you need those capabilities.

Yes, and its September 2026 relaunch made AI central: you describe the changes you care about in plain language and ChangeTower alerts only when those conditions are met, plus AI summary reports across monitored pages. Importance scoring and structured change categorisation are still not documented. SiteGauge provides AI summaries that categorise changes and assign an importance score natively.

Partly. Since the September 2026 relaunch, ChangeTower's Business tier ($78/mo) sends Slack alerts and webhooks directly, and Microsoft Teams alerts work by adding a channel's email address (a native Teams app is announced as coming soon). A legacy Zapier app is still listed on zapier.com, but ChangeTower no longer promotes it on its integrations page. SiteGauge offers native Slack, Teams, Discord, Telegram, Google Chat, SMS and webhook channels on Standard ($24/mo) and above.

Yes. The September 2026 relaunch added MCP for AI assistants on the Business tier ($78/mo), connecting ChangeTower to Claude, ChatGPT, or Gemini, and MCP also works as an alert-routing destination. SiteGauge ships its own MCP server so Claude, ChatGPT and Cursor can list and create monitors and read change history; it does not trigger checks.

ChangeTower once published an iOS app, but its App Store listing has not been updated since June 2021 (version 1.0.1) and the relaunched ChangeTower site no longer mentions a mobile app, so treat it as unsupported. Neither tool has a current mobile app; SiteGauge relies on email plus Slack, Teams, Discord, Telegram, Google Chat, SMS and webhook alerts instead.

SiteGauge is better for compliance because it can export tamper-evident audit evidence (Business and Enterprise plans): signed with Ed25519, checkable on a public verify page, and carrying an RFC-3161 trusted timestamp when the timestamp authority is reachable. ChangeTower markets evidence-grade timestamped screenshot and HTML archives plus audit trails of how each change was handled, but without cryptographic verification.

Domain scanning is available on ChangeTower's Enterprise tier only. SiteGauge offers sitemap-based whole-domain monitoring with tiered cadence from the Standard plan (50 pages) up to unlimited on Enterprise; the Free plan can watch a single sitemap for added and removed pages.

ChangeTower exposes integration primarily through its native Zapier app and webhooks, and references an API token for connecting services; a full standalone read/write REST API is not clearly documented. SiteGauge includes its full read/write API on every plan.

Yes. When a change is significant, SiteGauge reads it with AI and produces a plain-English summary that says what changed, categorises it (pricing, messaging, product or SEO), and scores how important it is, alongside before/after visual and text diffs. Routine, low-importance edits are still logged, without spending an AI pass on them. This is its core differentiator versus tools that only show a raw diff.

Yes. Point SiteGauge at any pricing page and it detects changes to prices, plan structure, and CTA copy, then sends an alert with an AI summary explaining exactly what shifted. It captures before/after screenshots so you can see the change visually.

Yes. SiteGauge has a free plan ($0) that monitors up to 5 pages with daily checks, AI change summaries, and email alerts plus an RSS change feed, no credit card required. Paid plans add more monitors, faster cadence, and team integrations.

Often. When an ordinary fetch is blocked, SiteGauge can switch to a residential browser, which reaches many bot-protected pages behind Cloudflare or Akamai. It is not guaranteed: some heavily protected sites still block capture, and these renders use a monthly allowance on each self-serve plan. Most monitors never need this, so it is reserved for the pages that do.

Yes, on the Business and Enterprise plans. SiteGauge exports signed, tamper-evident evidence of a change, using an Ed25519 signature (with an RFC-3161 trusted timestamp attached when the timestamp authority is reachable), packaged as a downloadable bundle with a public verification page that anyone can check against our published key. Most monitoring tools do not offer independently verifiable evidence, which makes SiteGauge a fit for compliance and legal teams.

Email alerts and an RSS change feed are on every plan, including Free. Slack, Microsoft Teams, Discord, Telegram, Google Chat, webhooks, SMS and Google Sheets are available on Standard and above. You can also connect Zapier (via webhooks today; native app pending directory listing) and n8n (via webhooks) to reach thousands of other apps, and drive everything from your AI assistant through the built-in MCP server.

Yes. SiteGauge ships an MCP server, so AI assistants like Claude, ChatGPT and Cursor can connect to your account, create monitors, read change history and pull exactly what changed on a page, without leaving your assistant. You connect once by signing in, with no API key to copy and paste.

Yes. SiteGauge importance-scores every change, and you can set an alert filter so you only hear about the changes that matter, such as a competitor's price or pricing-page edit, while routine tweaks are still logged quietly. It cuts alert noise sharply without hiding anything.

Paid plans include a set number of editors plus unlimited free read-only viewers, so you can share monitoring across a whole team or with clients without paying per seat for people who only need to view results.

Yes. Unlimited free viewers on every paid plan, tag-scoped digests and up to 3 workspaces on Pro (10 on Business), and competitor monitoring make SiteGauge well suited to agencies managing monitoring across many clients and reporting results back to them.