Fast checks on every paid plan
Checks can run every minute on Pro, every 30 seconds on Business, and every 10 seconds on Enterprise. Detection depends on a successful scheduled check.
Comparisons by the OnChange team
Best change detection software in 2026
A practical side-by-side comparison of leading website change detection tools. Compare monitoring options, inspect plan limits, and follow official pricing sources in each detailed comparison.
| Feature | OnChange | Visualping | Distill.io | Hexowatch | ChangeTower | changedetection.io | Wachete | Versionista |
|---|---|---|---|---|---|---|---|---|
| Free plan | Not verified | Not verified | ||||||
| Cloud (no browser required) | Not verified | |||||||
| Sub-minute checks | Not verified | Not verified | ||||||
| Visual (screenshot) diffs | Not verified | |||||||
| API / JSON monitoring | Not verified | |||||||
| AI change summaries | Not verified | |||||||
| Git commit attribution | Not verified | |||||||
| WCAG accessibility scans | Not verified | |||||||
| Slack / Discord alerts | Not verified | |||||||
| Custom webhooks | Not verified | |||||||
| REST API | Not verified | |||||||
| Self-serve pricing | Not verified |
Yes, Partial, No. Based on publicly available information. This overview has not received a complete current feature audit. Not verified means the current offer could not be confirmed. Detailed comparison pages identify the pricing and interval checks completed on September 24, 2026 and link to official sources. Versionista now directs new accounts to Fluxguard.
Why teams switch to OnChange
Most change detection tools were built for one audience: marketers watching competitor pages. OnChange is built for the rest of the stack too. The product covers four monitor types deeply (text, visual, API, accessibility) and can compare detected changes with recent commits from a linked repository.
API monitoring is first-class
Dedicated JSON diff UI with JSONPath targeting. Track schema drift and breaking changes alongside page diffs.
AI change summaries on paid plans
Plain-English explanation of what changed and why it might matter, attached to alerts for meaningful changes on paid plans.
Git commit correlation
Connect a repository to investigate possible relationships between a change and recent commits. Evidence and confidence help a reviewer assess the result.
WCAG accessibility scans included
Full axe-core scans with attested baselines, ready for VPAT and agency client reports.
Honest, self-serve pricing
Free plan with full API access and all alert channels. Pro from $12/month. No annual contracts, no demo gating, no procurement.
Head-to-head comparisons
Each comparison page covers feature parity, pricing, and migration notes for that specific vendor. Pick the one that matches what you're evaluating.
OnChange vs Visualping
Polished consumer / marketing change monitor with strong visual diffs.
Pick OnChange if: You need sub-minute checks, API monitoring, or commit-aware attribution.
ReadOnChange vs Distill.io
Local and cloud monitoring, including five cloud monitors on Free.
Pick OnChange if: You need sub-minute cloud checks and accessibility evidence workflows.
ReadOnChange vs Hexowatch
Broad suite of 13+ monitor types under one roof.
Pick OnChange if: You want depth over breadth on the four monitor types that matter most.
ReadOnChange vs ChangeTower
Marketing-leaning cloud page monitor with clean reporting.
Pick OnChange if: Your team also needs API monitoring, accessibility, and a REST API.
ReadOnChange vs changedetection.io
Open-source self-hosted monitoring with a paid hosted option.
Pick OnChange if: You need integrated accessibility evidence and team review alongside cloud monitoring.
ReadOnChange vs Wachete
Long-running no-frills cloud monitor with email and SMS alerts.
Pick OnChange if: You want modern alerting, sub-minute checks, and a clean UI.
ReadOnChange vs Versionista
Existing-account service that directs new signups to Fluxguard.
Pick OnChange if: You want self-serve pricing, faster checks, and a developer REST API.
ReadOnChange vs PageCrawl
Feature-rich cloud monitor with protected-site crawling, discovery, AI reports, and WACZ.
Pick OnChange if: You need faster checks plus dedicated SEO, API, WCAG, and commit-attribution workflows.
ReadOnChange vs Fluxguard
AI-led web intelligence with gated workflows, network controls, proxies, and long-term archives.
Pick OnChange if: You want sub-minute operational monitoring and specialist diffs at self-serve prices.
ReadStill deciding? Read the buyer's guide
A practical, vendor-neutral framework for choosing a change detection tool: what to evaluate, the questions to ask in a trial, and the red flags to walk away from.
Make the comparison with your own page
No credit card. Five monitors, every alert channel, and full API access.