Product comparison
OnChange vs Hexowatch
Hexowatch is a broad monitoring suite that bundles many detection types (visual, HTML, technology, keyword, sitemap, domain expiry, SSL, etc.). OnChange combines text, visual, API, and automated WCAG evidence in a review workflow.
Hexowatch's pitch is breadth - one tool for a dozen monitor types. OnChange's pitch is depth: faster checks, developer-first tooling, AI summaries on paid plans and Git correlation for linked repositories, and WCAG scans agencies can hand to clients. If your use case is one of the specialty Hexowatch monitor types (domain or SSL expiry for instance), that tool is purpose-built for it. If you're monitoring web pages and APIs, OnChange is the leaner fit.
Feature comparison
Scroll horizontally to compare both products.
| Feature | OnChange | Hexowatch |
|---|---|---|
Free plan available OnChange Free includes 5 monitors. A current Hexowatch free-plan allowance could not be verified from its public pricing grid. | Not verified | |
Sub-minute check intervals Hexowatch publishes 15-minute checks on Pro and 5-minute checks on Business; check quotas and current terms should be confirmed on its pricing page. | ||
Visual (screenshot) diffs | ||
Text / content diff detection | ||
API / JSON endpoint monitoring Both support API monitoring; OnChange's JSON diff UI is built for developers. | ||
CSS selector targeting | ||
AI change summaries OnChange offers AI summaries for qualifying changes on paid plans, within daily usage budgets. | ||
Git commit correlation With a linked repository, OnChange can investigate recent commits and record suspected causes with supporting evidence. | ||
WCAG accessibility scans Full axe-core scans with attested baselines for VPAT workflows. | ||
Free public screenshot tool Anonymous URL-to-PNG capture at /tools/screenshot - no sign up required. | ||
Slack / Discord alerts | ||
Custom webhooks | ||
REST API | ||
Team collaboration | ||
Domain / tech stack / SSL monitoring Hexowatch bundles domain expiry, tech stack, and SSL monitors; OnChange focuses on page and API changes. |
OnChange plan availability: visual comparisons, JavaScript rendering, and AI summaries start on Pro; multi-region monitoring and automations start on Business. AI features have daily usage budgets. Git correlation requires a linked repository and supports investigation by a reviewer. Compare current OnChange plan limits.
Comparison based on publicly available information. Hexowatch's feature set may have changed since publication. Verify the current details on their website.
Choose the product that fits the work
Pick OnChange if
- You want fast sub-minute checks, not the 5-15 minute minimums most tools impose
- Your team writes code and you want deploy-aware "why did this change" verdicts
- You're an agency doing WCAG work and need attested accessibility baselines
- You prefer a focused tool with depth over a broad checklist of monitor types
- You want AI summaries for qualifying changes within paid-plan usage budgets
- You need a clean REST API to script monitor lifecycle from CI
Pick Hexowatch if
- You want domain expiry, SSL expiry, and tech-stack monitoring bundled into one tool
- You already use Hexowatch's agency / whitelabel workflow and don't want to split tools
- Your use cases span many niche monitor types (Sitemap, RSS, Keyword rank, etc.)
- You don't need sub-minute frequency or Git-aware attribution
Pricing
Hexowatch packages plans around monitoring checks and capabilities. A current numeric starting price could not be verified from its public pricing grid, so check the live offer before comparing costs. OnChange Free includes 5 monitors; Pro is $12/month for 50 monitors at 60-second intervals; Business is $39/month for 300 monitors at 30-second intervals.
Hexowatch pricing and complete quotas are not independently verified in this comparison.
Check Hexowatch's official pricing and availabilityMigration plan
For Hexowatch's visual / HTML monitors, the CSS selectors and URL configuration transfer directly. Notification destinations (Slack / Discord / webhooks) map 1:1. If you use Hexowatch's specialty monitors (domain expiry, SSL, etc.) OnChange doesn't have a direct equivalent today - keep those on Hexowatch or use a dedicated SSL / domain tool.
Try OnChange free
5 monitors, all alert channels and full API access, no credit card required. Start with one monitor and migrate at your own pace.