competitor & website change monitoring
Know when a rival moves.
Ignore everything else.
Pixel-based monitoring tools bury you in noise — cookie banners, rotating ads, testimonial carousels. RivalSentry reads competitor pages the way you would: it detects price drops, plan changes, and new features, checks them against your instructions, and alerts you in Slack only when it matters.
30 days on a competitor's pricing page
27 checks stayed quiet or were filtered as noise. One was a real price drop — that's the only message you got.
why semantic monitoring
Website change detection is easy. Deciding what matters is the hard part.
01
Point it at a page
A competitor's pricing page, feature grid, or changelog. No CSS selectors, no robot training — just the URL.
02
Say what matters
In plain language: “only alert me on pricing decreases or new features. Ignore blog posts and wording tweaks.”
03
Get signal in Slack
The AI reads every change against your instructions. Cookie banners get filtered; a $49→$39 price drop lands in your channel with before and after.
semantic vs pixel monitoring
What you get alerted about, by approach
| Page change | Pixel/visual tools | RivalSentry |
|---|---|---|
| Competitor drops Pro plan $49 → $39 | Alert | Alert — with before/after prices |
| Cookie consent banner updated | Alert | Filtered |
| Testimonial carousel rotates | Alert | Filtered |
| New “API access” feature added | Alert (a pixel changed, somewhere) | Alert — categorized as new feature |
| Ad banner swapped | Alert | Filtered |
| Copyright year changed | Alert | Filtered |
Every filtered change stays visible in your timeline, so you can verify nothing important was hidden.
pricing
Flat rate per competitor. No per-check billing.
Free
$0
- 1 competitor page
- AI semantic filtering
- Slack alerts
- Full change timeline
Per competitor
$15/page/month
- Everything in Free
- Unlimited checks per page — hourly, 15-minute, your call
- Pause a monitor, stop paying for it
- Prorated automatically as you add or remove pages
Per-check billing pushes visual-monitoring users from $10 tiers into $100–250/month business plans as soon as they check frequently. Our checks cost near zero because the AI only reads pages that actually changed — so we don't meter them.
faq
Common questions
How is RivalSentry different from visual monitoring tools like Visualping?
Visual tools compare screenshots pixel by pixel, so they alert on cookie banners, rotating testimonials, and ad rotations — roughly 83% of detected changes on those platforms are noise. RivalSentry extracts the meaning of a page (its text, pricing tables, and feature lists), diffs that, and then an AI reads the diff against your plain-language instructions. You get an alert when a competitor drops a price, not when their cookie banner changes.
What can I monitor?
Any public web page — competitor pricing pages, feature pages, changelogs, plan comparison tables, terms of service. You describe what you care about per page, like "only alert me on pricing decreases or new features, ignore blog posts."
How much does it cost?
Flat rate per competitor page: your first monitor is free, and every additional active monitor is $15/month with unlimited checks. There is no per-check billing, so checking every 15 minutes costs the same as checking daily.
How do alerts arrive?
Natively in Slack via incoming webhooks — each alert includes what changed, before/after prices, and a link to the page — plus a full change timeline in your dashboard.
Do I need to write selectors or train robots?
No. Point RivalSentry at a URL and write one sentence about what matters. There are no CSS selectors, XPath expressions, or robot-training sessions.
Your rivals ship quietly. Hear about it anyway.
Set up your first monitor in under a minute. Free, no card required.
Start monitoring free