“I set up ChangeSentry to monitor a product page I was waiting on. Three days later I got an alert that the price dropped. Bought it before it moved again.”
Know what changed before the market reacts
Track competitor pricing, product launches, landing pages, and vendor updates with plain-English summaries that explain what changed and why it matters.
- Template setup
- No credit card required
- Public webpages
Why ChangeSentry
Built for how you
actually work
From fast-moving bargain hunters to systematic researchers, ChangeSentry adapts to your workflow — not the other way around.
Pricing page changed
competitor.com/pricing · just now
New feature launch detected
vendor.io/changelog · 14 min ago
Stock status changed
shop.example.com · 1h ago
Instant Alerts
Get notified within minutes of a change being detected. Our monitoring engine checks your pages as frequently as every 15 minutes.
https://competitor.com/pricing
Monitor active · every 15 min
No Technical Setup
Paste a URL, give it a label, and you're monitoring. No server, no code, no configuration required. Start in under 60 seconds.
AI Summaryjust now
What changed: Pro plan price increased from $29 to $39/mo. Annual discount reduced from 30% to 20%.
competitor.com/pricing
AI-Powered Summaries
Every alert includes a plain-English explanation of exactly what changed and why it matters — no raw diffs to parse.
Email
Discord
Telegram
In-app
Multi-Channel Alerts
Receive notifications via Email, in-app alerts, Discord, or Telegram. Choose the channels that fit your workflow.
.price-tag
$29 / month
Precise Targeting
Use a CSS selector to scope monitoring to a price element, a job listing, or any specific section of the page.
Key Capabilities
Smarter monitoring, built for real workflows
From precise diff views to multi-channel notifications, ChangeSentry gives you exactly the tools you need to stay on top of what matters.
Before & After Diff
See exactly what changed, instantly
Our diff viewer highlights every addition and removal side-by-side so you never have to guess what changed. Free users see the last 5 changes; Pro users get a full 30-day history.
Change detected · apple.com/shop
Before
Pro plan — $49/mo
Free shipping on all orders
In stock: Ships in 1-3 days
After
Pro plan — $39/mo
Free shipping on all orders
In stock: Ships in 1-3 days
Price reduced by $300 · Detected 2 minutes ago
CSS Selector Targeting
Watch only what matters to you
Target a specific price tag, job listing, stock level, or any element on the page using a CSS selector. Stop noise from ads, timestamps, and irrelevant dynamic content.
Add new monitor
🔗amazon.com/dp/B0BLPX1Y1R
#priceblock_ourprice
Targets only the price element — ignores reviews, ads & navigation
Alert me if the price drops below $90
Multi-Channel Notifications
Alerts where you already live
Every plan includes email and in-app notifications. Standard and Pro plans add Discord and Telegram, so your whole team can stay in the loop without leaving the tools they use.
Rich HTML email with change summary and diff link
In-App
All plansReal-time bell notifications inside the dashboard
Discord
Standard+Rich embed with change summary in your server
Telegram
Standard+Formatted message with URL label and change excerpt
Change History
Every change, recorded and searchable
Never lose context. Free users see the last 5 changes per URL. Standard users get 20. Pro users get a full 30-day history with before/after diff view and timestamps for every detected change.
Change History — Competitor careers
2 new job postings added
Mar 23, 2026 · 09:14
Senior Engineer role removed
Mar 20, 2026 · 14:02
Job description updated
Mar 18, 2026 · 08:45
3 new job postings added
Mar 15, 2026 · 11:30
Salary range updated
Mar 12, 2026 · 16:55
Plans That Grow With You
Simple, transparent pricing
Start free. Upgrade when you need more. No hidden fees, no contracts — cancel any time.
Free
Perfect for getting started — no credit card required.
$0/mo
- Monitor 3 URLs
- Check every 6 hours
- Email + in-app notifications
- CSS selector targeting
- Last 5 change events per URL
- 2FA & login history
- Support tickets
Most Popular
Standard
For individuals who need faster checks and more reach.
$8/mo
- Monitor 15 URLs
- Check every 15 minutes
- Email + in-app + 1 extra channel
- Discord or Telegram alerts
- CSS selector targeting
- Last 20 change events per URL
- 2FA & login history
- Support tickets
Pro
For power users and small teams who need everything.
$24/mo
- Monitor 50 URLs
- Check every 15 minutes
- All channels simultaneously
- Email + in-app + Discord + Telegram
- CSS selector targeting
- 30-day full change history
- URL tagging, search & filter
- CSV export
- Live chat support
- Priority support tickets
Compare plans
Scan features by category. Prices reflect your billing toggle above — same tiers, clearer side-by-side view.
| Features | |||
|---|---|---|---|
| Monitoring | |||
| Monitor URLs | 3 | 15 | 50 |
| Check frequency | Every 6 hrs | Every 15 min | Every 15 min |
| CSS selector targeting | |||
| Alerts & integrations | |||
| Email notifications | |||
| In-app notifications | |||
| Discord / Telegram | 1 channel | Both | |
| History & workflow | |||
| Change history | Last 5 | Last 20 | 30-day history |
| URL tagging | |||
| Search & filter URLs | |||
| CSV export | |||
| Security & support | |||
| 2FA & login history | |||
| Support tickets | Priority | ||
| Live chat support | |||
| Billing | |||
| Annual billing (20% off) | |||
All prices in USD. Annual billing saves 20%. Failed payments have a 3-day grace period. Questions about billing?
Testimonials
Trusted by the best
in your industry
Find out why ChangeSentry is the top choice for founders and teams who move fast.
“I was watching a company careers page manually every morning. ChangeSentry automated that completely and told me when the role went live. It's become an essential part of my job search workflow and I can't imagine going without it.”
“We monitor six competitor pricing pages. Every time they update their plans or add a new tier, we get a Discord notification instantly. Used to take days to catch these changes.”
“I track supplier pricing pages and a government regulatory portal. ChangeSentry notifies me the moment anything changes — saved me from missing a critical compliance update last quarter.”
“The CSS selector targeting is a game-changer. I watch only the specific data tables I care about on government statistics pages — no noise from navigation or ads changing. It's rare to find a product that's both simple and this powerful.”
“Set up in literally 60 seconds. No server, no setup, just paste a URL. The diff view is clean and makes it immediately obvious what changed. Exactly what I needed.”