SiteGauge vs OnWebChange

It depends on what you weigh. Headline prices differ, and 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. 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 OnWebChange handles this, see the feature table and scorecard above, taken from our research on OnWebChange's own pages. The surest test is to point both tools at the same pages for a few weeks.

OnWebChange is a low-cost, simple web-change monitor that alerts you by email, mobile push, or URL callback when a tracked page, element, or PDF changes. SiteGauge is an AI-driven monitoring and competitive-intelligence platform that adds change categorisation, importance scoring, before/after visual and text diffs, native Slack/Teams/webhook alerts, an API, and team roles. OnWebChange wins on price; SiteGauge wins on depth and analysis.

OnWebChange is a reasonable alternative if you want the cheapest possible monitoring for a handful of pages or PDFs and don't need AI analysis, integrations, or team features. If you need to understand what changed and whether it matters, alert a team in Slack or Teams, or produce audit-ready records, SiteGauge is the better fit.

OnWebChange is among the cheapest in the category. It has a free plan (3 trackers, daily checks), with paid plans starting around €0.89/month (Lite) up to roughly €8.99/month (Turbo-100, 100 trackers with faster checks). Pricing is based on the number of page trackers and check frequency rather than a checks quota.

OnWebChange offers AI translation and content summarisation, which help with cross-language monitoring. It does not categorise changes (e.g. pricing vs messaging) or score their importance. SiteGauge's AI summarises, categorises, and importance-scores each change so you can triage quickly.

OnWebChange's documented alert and output channels are email, mobile push, URL callback/webhook, and an RSS feed. It does not offer native Slack, Teams, or Telegram integrations, and a public API is not documented. SiteGauge offers native Slack/Teams/webhook alerts from the $24 Standard plan, plus a full read/write API on every plan.

OnWebChange captures a screenshot of the page when a change is detected and can target specific elements, so it has light visual capability. It is not a visual-first tool with multi-viewport before/after visual diffing the way SiteGauge or Visualping are.

Yes, OnWebChange can track PDFs, images, and other files for changes, which is a genuine strength. SiteGauge also monitors PDF, Word and Excel documents by extracting and diffing their text, but it does not track image files, so if image-file monitoring is your main need, OnWebChange may suit you better.

SiteGauge is better for competitor monitoring because it categorises changes (pricing, messaging, product, SEO) and scores their importance, turning raw diffs into intelligence, and can render bot-protected sites via residential IPs. OnWebChange will tell you a competitor page changed but leaves the interpretation entirely to you.

SiteGauge. It provides Owner/Admin/Member roles, unlimited free read-only viewers, tag-scoped digests (Pro and above), comments, and an API, well suited to agencies managing many client sites. OnWebChange has no documented team, seat, or multi-user features.

OnWebChange offers public, shareable change logs with version comparison, which provide a transparent history, and it can monitor PDFs. However, it lacks signed, tamper-evident records. SiteGauge provides tamper-evident audit evidence (Ed25519-signed with a public signature-check page, plus an RFC-3161 timestamp when the timestamp authority is reachable; Business and Enterprise plans), which is stronger for legal or regulatory needs.

SiteGauge's higher price reflects AI change analysis, multi-viewport visual diffing, residential rendering for bot-protected sites, native team integrations, roles with unlimited free viewers, an API, whole-domain monitoring, and audit-evidence exports (Business and Enterprise plans). OnWebChange is cheaper because it focuses on simple change detection and basic alerts.

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.