Privacy policy

Effective date: 2 September 2026 · Last updated: 2 September 2026 · Applies to zimmerstack.com, our lead forms on ad platforms, and the ZimmerStack platform.

Who we are

ZimmerStack is hotel software from Zimmerstack Technologies, Hyderabad, Telangana, India. Hotels use it to run their front desk, restaurant, direct bookings, channels and pricing. This page explains what data we collect from you, why we collect it, and how to get it corrected or deleted.

Information we collect

Details you type into this website: the demo and callback forms, the contact page, and the free trial signup at /start send us what you enter. That is usually your name, email, phone number, hotel name, room count, preferred call time and your message. The free tools work without an account; if you choose to leave an email or phone number with a tool, we store that too.

Details from lead forms on ad platforms: when you submit a lead form inside Facebook, Instagram or Google, that platform sends us your answers, usually your name, phone number and email. From that moment this policy covers them, the same as a form filled here.

Details collected automatically: standard technical data such as the pages you visit, your browser type, your rough location from your IP address, and the ad or campaign that brought you here. Our analytics count events in aggregate; we do not build a profile of you as a person.

How we use collected information

We use these details to reply to you, call you back when you ask, set up demos and trials, run the service, and measure which of our ads bring real enquiries. That is the full list. We never sell personal data, never share it with data brokers, and never use it for anything unrelated to ZimmerStack.

Contact information submitted through forms

Every form on this site, and every lead form we run on an ad platform, delivers what you typed straight to our own lead system. A person on our team reads it and gets back to you. Your details are never posted anywhere public and never passed to other advertisers.

Phone, WhatsApp and email communication

If you share your phone number, we may call you or message you on WhatsApp about your enquiry, demo or trial. WhatsApp messages go through a WhatsApp Business service provider, which handles your number only to deliver our messages. Email comes from our own support address.

You can opt out any time: reply "stop" on WhatsApp, say so on the call, or email support@zimmerstack.com. We stop contacting you, and we keep only what the law requires us to keep.

Cookies and analytics

This site sets a small number of cookies. When you arrive from an ad, cookies store the ad-click identifier (for up to 30 days) and the campaign that brought you, so that if you later contact us we know which ad worked. The site loads Google Tag Manager to run this measurement.

Beyond ad measurement, analytics here are first-party and aggregate: our own event counts and Vercel Web Analytics. There is no third-party analytics identity and no data resale. You can block or delete cookies in your browser and every page keeps working.

Advertising platforms: Google and Meta

We advertise ZimmerStack on Google and on Meta platforms (Facebook and Instagram). Their measurement tags on this site count which ad clicks turn into calls, WhatsApp taps and form submissions. The Meta pixel, when active, reports page views to Meta the same way.

If you submit a form, we may share a one-way hashed (SHA-256) version of the email and phone you typed with the ad platform, only so it can match the conversion to the ad. The plain values are never given to any advertiser. We may also report later outcomes against the original ad click, for example that an enquiry became a customer, using the click identifier alone.

Meta and Google are responsible for the data handling inside their own platforms; their policies are at facebook.com/privacy/policy and policies.google.com/privacy. You can control ad personalisation in your Facebook, Instagram and Google account settings.

We share personal data only with the providers we need to run the service, and only for that job: cloud hosting and databases (Vercel, Fly.io, Neon, Amazon Web Services), WhatsApp business messaging, subscription payments (Razorpay), and the Google and Meta measurement described above. Each one is bound by its own data protection terms. Nobody gets your data for their own marketing.

We hand personal data to courts or authorities only when the law requires it, and only as much as the request lawfully covers.

What the platform stores for hotels

When your hotel runs on ZimmerStack, the platform stores your operational data: bookings, guests, folios, payments metadata, staff records and operational reports. This data belongs to you. We process it only to run the service, isolate it strictly per hotel account, and never sell or share it with third parties beyond the processors needed to operate (payment gateway, cloud hosting, messaging), each bound by their own compliance.

ZimmerStack records payments against bookings and folios; it does not process card payments itself, and full card numbers never touch ZimmerStack servers.

Data security

All traffic to this site and the platform runs over HTTPS. Data sits with established cloud providers, access is limited to staff who need it for their job, and each hotel's data is isolated to its own account. No system is perfectly secure; if a breach ever affects your data, we will tell you and the relevant authority as the law requires.

Data retention

Enquiry and lead details are kept while we are in touch and for as long as a future conversation is realistic; ask us to delete them and we do it sooner. Hotel operational data is kept while your subscription is active, an export stays available for 90 days after cancellation, and copies fall out of backups as backups rotate.

Your rights and data deletion

You can ask what we hold about you, have it corrected, or have it deleted. Email support@zimmerstack.com from the address you gave us, or call or WhatsApp us. We answer within 72 hours and complete verified requests within 30 days.

These rights include those under India's Digital Personal Data Protection Act and, where it applies to you, the GDPR. If you are unhappy with our answer, you can complain to your data protection authority.

Updates to this privacy policy

When this policy changes, we update this page and the date at the top. If a change meaningfully affects how we use your data, we say so plainly here.

Contact us about privacy

Zimmerstack Technologies, Hyderabad, Telangana, India. Email support@zimmerstack.com or call or WhatsApp +91 90840 51774. Privacy questions get an answer within 72 hours.