Website change monitoring tools, tested hands-on
Website change monitoring means software that checks a web page on a schedule and tells you when something on it changes: a price, a policy, a job post, a product page or a competitor's homepage. There are many tools that do this, and they differ a lot in price, check speed, noise and how they show you what changed.
WatchJury pays for one month of each tool and tests it on the same set of pages. Testing has not started yet. Until it finishes, this site lists only facts we checked on each vendor's official site. No scores, no rankings and no verdicts until we have real results and screenshots to show.
Website change monitoring tools compared
This table lists what each vendor publishes. It is not a ranking. Tools are in no particular order. "Fastest check" is the shortest interval the vendor lists on any self-serve plan unless noted.
| Tool | Lowest paid price | Free plan | Fastest check listed | AI filtering | Bot detection handling | Webpage discovery | Interface | Integrations | Source |
|---|---|---|---|---|---|---|---|---|---|
| Visualping | $14/mo (or $10/mo billed yearly) | Yes: 5 pages, 150 checks a month | Every 2 minutes (Personal 10K and Business plans) | Yes: AI change summaries and an important-or-not flag on every change; custom AI prompts on Solutions plans | Proxies and other countries to try; error email after sustained failure (on by default) | Yes: Discovery suggests up to 5 pages per search from a description (all plans); Domain Monitoring finds and rescans pages on one site (Solutions plans, on request) | Web app, Browser extension, API | Email, Slack, Teams, Webhook, Google Sheets, +more (SMS, Telegram, n8n, API, MCP) | Vendor page |
| Distill.io | $15/mo | Yes: 25 monitors (5 in cloud), 1,000 cloud checks a month | Cloud: every 2 minutes (Flexi). Local monitors: from 5 seconds | Not stated | Error state and error alerts (default after 5 errors in a row); switch to proxies or local checks | Yes: Sitemap monitor crawls a site from a start URL, alerts on added or removed URLs, and lets you import them as monitors (plan not stated) | Web app, Browser extension, Desktop app, Mobile app | Email, Slack, Discord, Teams, Webhook, +more (SMS, push, API on request) | Vendor page |
| ChangeTower | $12/mo | Yes: 3 pages, checked daily | Hourly (Essential and Business). Custom on Enterprise | Yes: AI monitoring reads each change against what you describe; plain-language summaries | Not stated for bot blocks; alert option for page down or unreachable | Yes: Domain Scanning crawls a whole domain weekly to monthly and marks new pages (Enterprise); entire-website setup indexes sub-pages into monitors (plan limits apply) | Web app, Browser extension, API | Email, Slack, Webhook, API, MCP | Vendor page |
| Wachete | $5.40/mo | Yes: 5 static pages and 1 dynamic page, checked every 24 hours | Every 5 minutes (Premium and Ultimate) | Not stated (connects to AI assistants, but no AI filtering described) | Error notifications (can be turned off per error); try dynamic mode, another location or a residential proxy | Yes: Crawling full page including sub-pages monitors a site section across its sub-pages (plan not stated) | Web app, Browser extension, Mobile app, Desktop app (Windows), API | Email, Slack, Teams, Discord, Telegram, +more (Zapier, Webhook, API, app push) | Vendor page |
| PageCrawl.io | $13.33/mo billed yearly ($160/yr) | Yes: 6 pages, 220 checks a month | Every 2 minutes (Ultimate). 1 minute on a custom plan | Yes: AI summaries and smart filtering with importance scores; bring your own AI key | Retries some errors automatically; switch location, residential proxies or your own; support help | Yes: Page Discovery finds new pages via sitemap and links and can auto-monitor them (all plans; deeper crawls on Enterprise and Ultimate) | Web app, API | Email, Slack, Teams, Webhook, Zapier, +more (Discord, Telegram, Google Sheets, n8n, API) | Vendor page |
| changedetection.io | $8.99/mo (hosted) | Self-hosted open source version is free (Apache 2.0) | From about 5 minutes per browser runner (hosted) | Yes, with your own AI key: AI summaries and AI rules for notifications | Error shown on the watch; pick a proxy per watch or the Chrome browser fetcher | Partial: no built-in crawler; a tutorial shows a watch auto-adding new links it finds via the import API (all versions since 0.45.11) | Web app (hosted), Self-hosted, API | Email, Slack, Discord, Telegram, Office 365, +more (85+ formats) | Vendor page |
| Hexowatch | $10.50/mo billed yearly ($126/yr), OR:ON Personal | Yes: OR:ON Free plan, no credit card | Every 5 minutes (OR:ON Plus) | Yes (OR:ON): AI change analysis alerts only when a change matches what you asked; AI alert summaries | Residential proxies or a full browser may be needed; error alerts not stated | Yes: Sitemap monitor alerts on new, updated or deleted pages in a site's sitemap (plan not stated) | Web app, API | Slack, Webhook, API, MCP (OR:ON) | Vendor page |
| OnWebChange | 0.89 EUR/mo | Yes: 3 page trackers | Not stated on the pricing page | Yes: AI summaries and AI translation (no AI filtering described) | Trackers may be suspended on errors; dashboard shows state | Not found on vendor site | Web app | Email, Pushover, URL callback (webhook), RSS feed | Vendor page |
| WebsiteChange | $49/mo (or $24/mo billed yearly) | No free plan (free one-page demo only) | Every 2 minutes (Enterprise) | Yes: AI summary of each change with a low, medium or high importance score; alerts can be filtered by importance | Does not bypass blocks; shows a clear message when a page cannot be read | Not found on vendor site | Web app, API | Email, Slack, Teams, Webhook, API | Vendor page |
| Sken.io | 3 EUR/mo | No free plan. 14-day trial with 140 checks, no card | Every 1 minute (all plans) | Not stated | Not stated | Not found on vendor site | Web app, Browser extension, Mobile app (Android), API | Email, Slack, Discord, Webhook, Zapier, +more (Google Chat, Android app) | Vendor page |
| Changeflow | $99/mo billed yearly ($1,188/yr) | Yes: 3 sources | Hourly on self-serve plans. 10 minutes on Enterprise | Yes: each change is read against your one-line brief; AI-generated briefings | Error status on the source; support adjusts access or tries other regions | Yes: Track an entire site finds new pages via sitemap and link crawling and monitors them (plan not stated) | Web app, Browser extension, API | Email, Slack, Teams, Zapier, +more (API and webhooks on Business) | Vendor page |
| Monity.ai | Business from $50/mo billed yearly ($70/mo monthly) | Yes: 100 checks a month, 3 tasks | 15 minutes (Business). 1 minute on Enterprise | Yes: plain-English AI prompts decide when to alert | Check says it was blocked; support helps troubleshoot | Yes: Crawler mode walks a site from a start URL or sitemap and alerts on new pages (plan not stated; 1 credit per 5 pages visited) | Web app, Mobile app, API, Self-hosted (larger plans) | Email, Slack, Teams, Discord, Telegram, +more (Google Sheets, Webhook, API, MCP) | Vendor page |
| Fluxguard | $110/mo | Yes: 3 sites a month (vendor estimate) | Every 5 minutes (Premium) | Yes: AI summaries, custom AI prompts (Plus) and AI filtering (Premium) | Proxy options and regional proxies; error alerts not stated | Yes: Link harvesting crawls a site and proposes new links, optionally auto-monitored or AI-guided (up to 75 new links per session, 150 for subscribers) | Web app, API | Email, Webhook (Premium), API | Vendor page |
| Browse AI | $19/mo billed yearly ($228/yr) | Yes: 50 credits a month | Every 5 minutes per the plan summary (its comparison table says every minute) | Yes: AI change detection (no prompt filters described) | Retries with other methods automatically; failure emails (daily digest by default) | Yes: Workflows chain a list or sitemap robot into a detail robot so sub-pages are scraped and monitored (plan not stated) | Web app, Browser extension, API | Google Sheets, Airtable, Zapier, Webhook, API, +more | Vendor page |
| Firecrawl | $19/mo (or $16/mo billed yearly) | Yes: 1,000 credits a month | Every 5 minutes (scheduled monitoring) | Yes: optional plain-language goal; an AI judge alerts only on meaningful changes | Proxies by default with auto retry on enhanced proxies; errors in email and webhook summaries | Yes: Crawl monitors crawl a site on a schedule and report added, changed or removed pages (plan not stated; credits per page crawled) | API only | Webhook, Email, Slack, API | Vendor page |
What to look for in a website change monitor
- Check frequency. How often the tool looks at a page, and how many checks your plan allows each month.
- Visual or text comparison. Some tools compare screenshots, some compare text or HTML, some do both.
- Noise control. Ways to ignore dates, ads, counters and other parts of a page that change all the time.
- Where alerts go. Email, Slack, Microsoft Teams, webhooks, SMS or an API.
- Hard pages. Pages behind a login, pages that need a click first, PDFs, and sites that block bots.
- Price for your volume. Plans are priced by pages, checks or credits, so the cheapest plan is not always the cheapest for your use.
Reviews
Each review page lists verified facts now. Hands-on results and screenshots will be added once the paid test month ends.
- VisualpingA hosted web page change detection service with visual and text comparison, AI change summaries, a Chrome extension, a REST API and an MCP server.
- Distill.ioA change monitor that runs checks in the cloud or locally in a browser extension or desktop app, with macros to act on pages before checking.
- ChangeTowerA hosted website change monitoring service with AI monitoring in plain language, keyword tracking and selective monitoring of page sections.
- WacheteA hosted page monitor with mobile apps and browser extensions that alerts by email, phone or chat when a page or part of a page changes.
- PageCrawl.ioAn EU-based, cloud-hosted page monitor with AI summaries, document monitoring and a long list of alert integrations.
- changedetection.ioAn open source change detection project you can host yourself, with a paid hosted version run by the project's official provider.
- HexowatchA long-running monitoring service from Hexact, Inc. with many monitoring types. Its pricing page now shows plans for OR:ON, the company's newer AI website monitoring product.
- OnWebChangeA web page tracker running since 2009, with low-cost plans priced in euros, PDF and file tracking, and RSS output of tracker changes.
- WebsiteChangeA hosted monitor for public pages that filters noise and writes a short AI summary with an importance score for each change.
- Sken.ioA visual website change monitor priced by checks per month, with a Chrome extension and an API.
- ChangeflowAn AI monitoring service aimed at compliance and regulatory teams. You describe what matters and it sends briefings when a source changes.
- Monity.aiA UK-based AI website change monitor with plain-English alert rules, browser actions, mobile apps and uptime checks.
- FluxguardA web change detection service (the site footer names LegitScript as owner of the copyright) that uses a Chrome crawler for visual, HTML and text comparison, with AI filtering on higher plans.
- Browse AIA no-code web scraping platform. Its robots can also monitor a page on a schedule and alert when the extracted data changes. We review the monitoring feature.
- FirecrawlA web scraping API for developers. Its change tracking format compares a page with your last scrape, and its monitoring feature runs those checks on a schedule. We review change tracking and monitoring.