SiteGauge vs changedetection.io

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

changedetection.io is an open-source, developer-grade change monitor you self-host (free) or run as a cheap hosted SaaS (~$8.99/mo). It is extremely flexible: full REST API, JSON/PDF monitoring, RSS, 85+ notification channels, and AI with your own LLM key when self-hosted. SiteGauge is a managed AI competitive-intelligence platform: built-in change categorisation, importance scoring, residential rendering for bot-protected sites, tamper-evident audit evidence (Business and Enterprise plans), and a polished dashboard with unlimited free viewers, all with no servers or LLM keys to manage. Pick changedetection.io for control and low cost; pick SiteGauge for turnkey interpreted intelligence.

Yes, the open-source core (Apache-2.0) is fully free to self-host via Docker, pip, Windows, or ARM, with no signup and watch counts limited only by your own hardware. The trade-off is that you run and maintain the server and browser-render container yourself. The hosted SaaS (~$8.99/mo for up to ~5,000 watches) is the paid, no-maintenance option.

Yes. On self-hosted installs it is bring-your-own-LLM. It can produce plain-language summaries (for example, 'Price dropped from $89.99 to $67.00') and apply smart plain-English conditions to suppress irrelevant diffs, using any provider via LiteLLM: OpenAI, Gemini, Anthropic, or local Ollama/vLLM. Self-hosters supply and pay for their own LLM; the project README says AI features come to the hosted subscription from June 2026. Unlike SiteGauge, it does not include managed change categorisation (pricing/messaging/product/SEO) or native importance scoring out of the box.

Yes, this is a genuine strength. It monitors PDF documents (text plus filesize/checksum) and JSON API endpoints using JSONPath and jq filters, in addition to standard HTML pages. SiteGauge also monitors PDF, Word and Excel document text on every plan and can track one JSON API field by a dot-and-array path, but its JSON-API checks are narrower: no JSONPath expressions, jq filters or file checksums.

Yes, it offers a full read/write REST API with an OpenAPI specification, a Chrome extension for quickly adding URLs, and RSS feeds generated from changes. SiteGauge now matches all three (a full read/write API on every plan, its own Chrome extension, and RSS feeds); changedetection.io's real differentiators are being open-source and self-hostable, while SiteGauge adds AI change summaries, importance scoring and residential rendering for bot-protected sites.

It supports 85+ channels through the Apprise library, including native Discord, Slack, Telegram, Microsoft Teams, Matrix, ntfy, Rocket.Chat, email/SMTP/O365, and custom JSON webhooks. SiteGauge sends email natively, with Slack, Teams, Discord, Telegram, Google Chat, SMS, Google Sheets and webhook on Standard and above; changedetection.io's edge is the long-tail channels like Matrix, ntfy and Rocket.Chat, which SiteGauge reaches only via generic webhooks.

It can be, but it is built as a developer tool: the UI is functional rather than polished, and getting interpreted summaries requires configuring LLM keys and rules. Non-technical marketing/SEO teams generally find SiteGauge easier, since its managed AI categorises changes, scores importance, and presents stakeholder-ready digests, and it bundles SEO tooling and SEO-metadata change tracking.

No, it does not provide signed, timestamped audit-evidence exports. For data-sovereignty compliance it shines because you can self-host and keep all monitored data in-house or air-gapped. But if you need verifiable legal proof of a change, SiteGauge's tamper-evident export (Ed25519 signature plus a downloadable ZIP and public verification page, with an RFC-3161 timestamp when the timestamp authority is reachable; Business and Enterprise plans) is the differentiator.

changedetection.io is free self-hosted, or ~$8.99/mo hosted for up to ~5,000 watches (a single flat plan; verify current limits). SiteGauge is checks-based: Free $0 (5 monitors), Standard $24, Pro $99, Business $199, and custom Enterprise. changedetection.io has the lower sticker price, especially self-hosted; SiteGauge's price buys managed AI, residential rendering, and audit evidence without infrastructure overhead.

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.