Booking & Reservation Availability Monitoring (v1)

Booking & Availability Monitoring

Every 5 Minutes On The Booking Page You Can't Keep Refreshing

ChangeTower checks every listing, calendar and availability page you name as often as every 5 minutes, and emails you the moment a slot opens.

No credit card · First monitor live in 5 minutes

14 Jul 2026
Monitors Booking watch
Booking watch

Every page in this folder is under a monitor: checked on your schedule, as often as every 5 minutes, with a dated snapshot stored every time and an email when your criteria are met. Booking still happens on the site itself.

Showing 8 of 24 monitored pages
PageLatest changeWhen
Stored
Monitor
Captured
Snapshot
Content changes
Stored in this snapshot
A screenshot of the page, exactly as a visitor saw it
The full HTML behind it
The exact date and time it was captured
Screenshot of the page, as rendered

The screenshot stored on that check: the page as a visitor saw it, kept with its HTML and never edited.

Detection is content-level: ChangeTower reads the words and the HTML. The screenshot is a dated record of the page, not compared against anything.

One folder for every page a booking depends on: viewing calendars, waiting lists, eligibility rules, rents, and fees. Open a row for what changed, and the page as it looked that day.

AI Monitoring

Tell it what matters. It ignores the rest.

A listing page changes all day without a single viewing appearing. Write your criteria in plain language, and only the changes that match them reach you.

Criteria in your own words.

No rules engine, no hidden thresholds. Say what deserves interrupting your morning, and the monitor holds to that.

"Alert me if a viewing opens for any 2 bedroom under $1,900 a month"
Every change is read and classified against your rule first
Changes that don't match are archived silently, so the record stays complete
Every alert carries a plain-language summary of what opened up
Change the rule any time, per monitor

One rule, written once. The photo update is archived; both viewing releases reach you the moment they are detected.

Manual user actions

Login, cookie banner, property picker? Still watched.

Booking calendars are rarely on an open page. Record the steps to reach yours once, and ChangeTower replays them before every check, so it reads the page as you would see it.

Record the steps once. They run before every check.

Sign in, dismiss the banner, choose the property, open the week. You record it once and the monitor repeats it.

Sign in to a password-protected portal, credentials stored securely
Close the cookie banner, popup or interstitial sitting over the page
Pick the property, site or date range from a dropdown before the check runs
The steps replay before every check, so the page is always read the same way
Pair it with selective monitoring to watch the availability table only

The same four steps you would do yourself, run for you every 5 minutes.

See it in action

From the availability alert to the booking page, slots still there.

Explore how ChangeTower improves booking and reservation hunting.

Mail  ·  Inbox 08:11
Inbox3 new
CT
ChangeTower 13 Jul, 06:05
Daily summary: 24 monitored pages

Every monitored page captured on schedule. 1 change since yesterday, archived.

CT
ChangeTower 13 Jul, 18:46
Change detected: brackenmoorparks.org/camping/bookings

A cancellation opened for pitch 14, 21 to 24 Aug, where the whole month had been fully booked.

CT
ChangeTower 14 Jul, 08:11
Change detected: hallowayfinch.com/lettings/22-riverbank-walk/viewings

Summary: The viewing calendar went from fully booked to 6 slots across Thu 16 and Fri 17 Jul. Matched your rule: a viewing for any 2 bedroom under $1,900 a month.

Material change Matched your rule

Sent the moment the 08:10 check found it. Booking happens on Halloway & Finch's own site: ChangeTower tells you, it does not book, hold or reserve anything.

14 Jul 2026
22-riverbank-walk/viewings · Slots opened
Detected on the 08:10 check · snapshot #3843 stored
Material change
MonitorOpenings · Halloway & Finch
Detected14 Jul 2026, 08:10
Snapshot#3843
AIPlain-language summary

The viewing calendar went from fully booked to 6 slots across Thu 16 and Fri 17 Jul. Your four recorded steps reached the signed-in view, and only the viewing slot table was read.

Availability
Viewings for this property are currently fully booked.
Thu 16 Jul: 10:00, 10:30, 11:00, 16:20. Fri 17 Jul: 09:15, 09:45.
Your rule
Alert me if a viewing opens for any 2 bedroom under $1,900 a month.
Screenshot of the page · 14 Jul 2026
hallowayfinch.com/lettings/22-riverbank-walk/viewings1440 × 2240 · PNG
HALLOWAY & FINCHLettingsViewingsReferencingSigned in
Book A Viewing · 22 Riverbank Walk
Availability updated 14 July 2026

Viewing slots are released as our lettings team confirms access with the current tenant. Select a time below to request a viewing.

This week
DateTimePlaces
Thu 16 Jul10:00, 10:30, 11:003 free
Thu 16 Jul16:201 free
Fri 17 Jul09:15, 09:452 free

Requesting a slot does not reserve it. Slots are confirmed by the lettings team and may be withdrawn if the property is let beforehand.

Halloway & Finch Lettings

The screenshot stored on that check: the page as it was reached, kept with its HTML.

3,843 snapshots stored for this page
3,843 snapshots
hallowayfinch.com/lettings/22-riverbank-walk/viewings
Every scheduled check since 01 Jul 2026, every 5 minutes
Complete history
14 Jul 08:106 viewing slots opened for 22 Riverbank WalkMaterial
09 Jul 08:052 viewing slots opened, both taken the same dayMaterial
05 Jul 07:584 viewing slots opened, all taken by 11:30Material
02 Jul 14:20Listing photos updated, no viewings releasedMinor
01 Jul 00:00First snapshot storedBaseline
Turn the cadence up, or narrow what counts

Every check in between has a snapshot too, changed or not. All three releases in the last two weeks landed between 07:58 and 08:10: this agency posts viewings before the office opens.

Monitor settings
Monitor settings
hallowayfinch.com/lettings/22-riverbank-walk/viewings
Active
ChecksEvery 5 minutes
Before each check4 recorded steps, sign-in included
WatchingThe viewing slot table only
Alert me whenA viewing opens under $1,900 a month
Alerts toEmail

Turn the cadence up while you search, and back down once you have signed. Every setting is per monitor.

Browser extension

Found the booking page at midnight? Monitor it from there.

Nobody finds these pages in a dashboard. They turn up three links deep late in the evening, and the extension turns that page into a monitor.

From open tab to monitored page, in one click.

Tables released 30 days ahead at 09:00 are gone by 09:02. Click the icon and the page is monitored.

One click from any tab: the page you're on is filled in
Describe what to catch in plain language: "any table for two, Friday or Saturday"
The monitor is live before you close the tab
Tune the cadence, narrow the scope and add recorded steps from the dashboard
Every extension monitor gets the full platform: summaries, alerts, the archive

Found at midnight, monitored before the tab closes. The page joins your other monitors, archived from its next check.

Coverage

Every page a booking depends on.

A viewing calendar turns over in minutes. A fee schedule moves twice a year. Check frequency is set per page, as often as every 5 minutes.

Rental Viewings & New Listings

Agency calendars and property pages, watched for the moment a viewing opens or a listing appears in your area and price range.

every 5 min

Cancellations & Returned Places

The pitch, table or slot somebody gave back an hour ago. Returns surface without warning and rarely last, so you watch continuously.

every 5 min

Campsites, Permits & Park Passes

Pitch calendars, trail permits and vehicle passes, where a season sells out in the first minute, then trickles back one cancellation at a time.

every 5 min

Clinic & Specialist Appointments

Private clinic calendars and next-available dates, watched for an earlier appointment or a cancellation.

every 5 min – hourly

Restaurant Tables & Timed Releases

Dining rooms that open a date 30 days ahead at a fixed hour, and the tables that come back when somebody cancels.

every 5 min

Classes, Courts & Sessions

Course places, court bookings and studio sessions that open weekly and are taken within the hour.

every 5 min – hourly

Waiting Lists & Queue Positions

Register waiting times, published queue positions and next-available dates, so you learn the wait halved without checking yourself.

daily

Eligibility, References & Deposits

Referencing checklists, income multiples, guarantor rules and site conditions, watched for a requirement that appears, changes or disappears.

daily

Rents, Fees & Price Changes

Advertised rents, deposit terms and fee schedules, watched for a reduction worth acting on or a rise you would rather catch early.

daily
Use cases

What people actually use it for.

Catch a cancellation while it is open

Somebody gives a place back and it lands on the calendar with no announcement. With checks as often as every 5 minutes, the email reaches you within minutes, not the next time you happen to look.

Watch every agency, park and clinic at once

One monitor per booking page, as many pages as you want: 6 agencies, 3 campsites, or the same property across its listing and its calendar, all reporting into one place so you take whatever opens first.

Know the rent or the rules moved before you commit

Advertised rents drop, referencing requirements tighten, deposit terms change, none of it announced. Those pages sit under the same watch as the calendar, and the summary tells you what moved.

Learn when things are actually released

Every check stores a dated snapshot, changed or not, so the release pattern shows: what hour slots appear, how long they last, how often they come. Guesswork turns into something you can read.

For professionals

Search on behalf of other people

Relocation consultants, letting agents and care coordinators run the same search many times over. Group each person's pages into their own folder, and add listing and calendar URLs in one go with bulk setup.

For professionals

Watch the market, not just your shortlist

New listings, price reductions and let-agreed flags across the portals you compete on, captured the day they move. Every check leaves a dated snapshot, so what a property was advertised at, and when, is on record if anyone disputes it.

Watching pages for other people? Bulk setup adds a list of URLs in one pass.

Reviews

What Our Customers Say

4.6 / 5 on G2

“One of the most powerful website monitoring tools I have used. It detects even the smallest changes across text, images, and complex DOM structures — with impressive results tracking competitor pricing in real time.”

Corey M.Sr. Full Stack Developer
via G2

“ChangeTower lets me monitor changelogs, release notes, and pricing pages on competing products. The change detection is accurate and detailed — I can see exactly what was added or removed.”

Eric L.VP of Product, Mid-Market
via G2

“The ability to track dozens of competitor websites at once and tailor alert rules to each client is handy. Continually impressed with how it applies across very different industries.”

Daniel B.Managing Principal, Small-Business
via G2

“Creating monitors is very easy — I have around 200 active at any given time. I haven’t come across a webpage yet that I couldn’t get ChangeTower to work for.”

Alex Z.Project Manager, Enterprise
via G2

“I can’t say enough great things about the ChangeTower team. They took a problem I couldn’t solve and delivered results quickly and professionally. Highly recommend!”

Patrick B.Program Manager, Small-Business
via G2

“ChangeTower makes it easy to monitor competitor websites for updates. I love the visual differences that highlight exactly what’s changed. The alert system is reliable.”

Joe B.CFO, Mid-Market
via G2

“I use ChangeTower to monitor competitor brand pages and keep our own marketing content consistent across touchpoints. The notifications and team dashboard are very intuitive.”

Evan F.Director, Innovation Marketing
via G2

“ChangeTower helps us stay on top of compliance-related webpage changes. The real-time notifications are critical, letting us respond quickly when updates occur.”

Verified UserFinancial Services, Mid-Market
via G2

“One of the most powerful website monitoring tools I have used. It detects even the smallest changes across text, images, and complex DOM structures — with impressive results tracking competitor pricing in real time.”

Corey M.Sr. Full Stack Developer
via G2

“ChangeTower lets me monitor changelogs, release notes, and pricing pages on competing products. The change detection is accurate and detailed — I can see exactly what was added or removed.”

Eric L.VP of Product, Mid-Market
via G2

“The ability to track dozens of competitor websites at once and tailor alert rules to each client is handy. Continually impressed with how it applies across very different industries.”

Daniel B.Managing Principal, Small-Business
via G2

“Creating monitors is very easy — I have around 200 active at any given time. I haven’t come across a webpage yet that I couldn’t get ChangeTower to work for.”

Alex Z.Project Manager, Enterprise
via G2

“I can’t say enough great things about the ChangeTower team. They took a problem I couldn’t solve and delivered results quickly and professionally. Highly recommend!”

Patrick B.Program Manager, Small-Business
via G2

“ChangeTower makes it easy to monitor competitor websites for updates. I love the visual differences that highlight exactly what’s changed. The alert system is reliable.”

Joe B.CFO, Mid-Market
via G2

“I use ChangeTower to monitor competitor brand pages and keep our own marketing content consistent across touchpoints. The notifications and team dashboard are very intuitive.”

Evan F.Director, Innovation Marketing
via G2

“ChangeTower helps us stay on top of compliance-related webpage changes. The real-time notifications are critical, letting us respond quickly when updates occur.”

Verified UserFinancial Services, Mid-Market
via G2
FAQ

Questions people ask before they start.

How does booking availability monitoring work?

You point ChangeTower at the listing or booking page, record the steps to reach the calendar if it sits behind a login or a picker, and it checks as often as every 5 minutes. When a slot, viewing or table opens you get an email. You do the booking.

Does ChangeTower book the viewing or the table for me?

No. ChangeTower watches the page and tells you what changed. It does not book, hold, reserve or queue, and it will not fill in a form for you. What changes is when you find out: instead of finding a release the next morning, the email reaches you within minutes of the check that found it. The booking is yours to make on the site itself.

How quickly will I hear about something opening up?

The alert goes out on the check that finds the change, so the answer is the cadence you set: checks run as often as every 5 minutes, and a viewing that appears at 08:07 reaches your inbox around 08:11. Whether the slot is still there when you open it depends on the page, not on us.

The booking page is behind a login. Can you still watch it?

Usually, yes. Record the sign-in as one of the steps that run before each check, and the monitor reaches the same signed-in view you would. Credentials are stored securely and used only to reach that page. The exception is a site that blocks automated access outright: if the page will not load, it cannot be watched, and you see that straight away, not after a month of silence.

The calendar only appears after a banner and a property picker. Can you still watch it?

Sign in, dismiss the banner, choose the property, open the week. You record it once and the monitor repeats it.

Can I watch just the availability table and ignore the rest?

Yes. Selective monitoring watches one part of the page: the viewing slot table, or the pitch calendar. Rotating photo carousels, "14 people are viewing this" counters and a footer that changes on every deploy stop counting as changes.

Will I get an alert every time the page twitches?

No. That is the point of writing criteria. Say what deserves interrupting your morning, such as "alert me if a viewing opens for any 2 bedroom under $1,900 a month", and the AI reads every change against that rule. New photos or a reworded description are classified and archived without an alert. The record stays complete, your inbox stays quiet.

How many agencies, campsites or clinics can I watch at once?

Yes. One monitor covers one page, and you can watch as many pages as your plan allows: 6 agencies, 3 campsites, or the same property across its listing and its calendar. All of them report into one place, so you take whichever opening comes first instead of committing to a single queue.

Does it work differently if I run these searches for other people?

The monitoring is identical; the organising changes. Folders keep each person's pages separate, so a relocation consultant running 6 searches is not reading one long undifferentiated list, and bulk setup adds listing and calendar URLs in a single pass instead of one at a time.

Dated snapshots matter more here than for an individual: when somebody asks what a property was advertised at 3 weeks ago, or whether a requirement was on the page when the application went in, the record is there and was never edited.

What is a snapshot, and how long is it kept?

A dated capture of the page: what it rendered and the HTML behind it, stored every time a scheduled check runs, changed or not. Each one is timestamped and stays retrievable, so you can see what a listing advertised the day you applied, or what hour an agency tends to release its viewings.

Where do availability alerts get sent?

Email, Slack or Microsoft Teams. Email is what most people use here, since it reaches a phone the moment a cancellation lands.

Can it tell me when the rent, terms or rules change, not just availability?

Yes. Advertised rents, referencing requirements and deposit terms sit under the same watch as the calendar, so a change reaches you before you commit to anything.

Can it monitor a waitlist or a sold-out page for cancellations?

Yes. A sold-out page that gains a date, or a waitlist that opens, is a change like any other, and the check that finds it is the one that emails you.

Stop refreshing. Start getting told.

Put the booking page under a monitor and say what deserves an alert. First monitor live in under 5 minutes.

Encrypted end to end No credit card Cancel anytime