1. Introduction
Welcome to RentOrBuyWorld ("we," "our," or "us"). We are committed to protecting your privacy and providing transparency regarding our data practices while delivering real-time housing market analysis.
This Privacy Policy explains how we handle your information when you use our rent vs. buy calculator across 500+ cities worldwide. We follow a "Privacy by Design" approach, minimizing data collection to only what's essential for functionality.
2. Information We Collect
2.1 Calculator Inputs (100% Client-Side)
All calculator inputs are processed entirely in your local browser. We do not store or transmit your financial inputs (home prices, rent, down payment, etc.) to our servers. These calculations happen on your device and exist only:
- In your browser's memory during your session
- In the URL if you share a scenario (optional, user-controlled)
- Nowhere else—no databases, no cloud storage, no analytics
2.2 Cookies and Local Storage
We use browser storage technologies for enhanced functionality. Here's exactly what we store:
Essential Cookies (Cannot be Declined)
- Language Preference: Remembers your selected language (en, fr, de, etc.)
- Dark Mode Preference: Stores your theme selection
- Cookie Consent: Records your cookie preference choice
These are necessary for basic site functionality and are stored in your browser's localStorage.
Advertising Cookies (Requires Your Consent)
- Adsterra Cookies: Used to serve and track advertising performance
- Data Collected: Browser type, device type, approximate location (country-level), anonymized behavior
- Purpose: Display relevant ads and measure ad effectiveness
You can decline these via our cookie banner. Ads will not load if you choose "Essential Only."
3. Third-Party Advertising (Adsterra)
This website uses Adsterra, a third-party advertising network, to monetize our free calculator service. Adsterra utilizes scripts and cookies to analyze traffic and display advertisements.
What Adsterra Collects:
- IP address (anonymized for EU users under GDPR)
- Browser type and version
- Operating system
- Pages viewed and time spent on site
- Approximate geographic location (country/city level)
Adsterra does not collect personally identifiable information (PII) such as your name, email, or financial data.
For detailed information on Adsterra's data practices, please review the Adsterra Privacy Policy ↗.
4. Data Retention and Storage
We follow a minimal retention policy because we don't collect server-side data:
| Data Type | Stored Where | Retention Period |
|---|---|---|
| Language Preference | Your Browser (localStorage) | Until you clear browser data |
| Theme Preference | Your Browser (localStorage) | Until you clear browser data |
| Cookie Consent | Your Browser (localStorage) | Until you clear browser data |
| Calculator Inputs | Your Browser Memory + URL | Session only (not persistent) |
| Adsterra Cookies | Third-Party Servers | Per Adsterra's policy (typically 30-90 days) |
Important: We do not maintain any server-side databases containing user data. All personal preferences are stored exclusively on your device.
5. Your Rights (GDPR & CCPA Compliance)
As a global service, we respect data protection regulations worldwide, including GDPR (Europe) and CCPA (California). You have the following rights:
🔍 Right to Access
You can view all data stored about you by opening your browser's Developer Tools (F12) → Application → Local Storage → rentorbuyworld.com
✏️ Right to Rectification
You can modify your language, theme, or consent preferences at any time through the site interface or by clearing localStorage.
🗑️ Right to Deletion ("Right to be Forgotten")
To delete all data we store about you:
- Clear your browser's localStorage for rentorbuyworld.com
- Clear cookies for rentorbuyworld.com
- Clear cookies for adsterra.com domains (if you accepted advertising)
Quick Method: In Chrome/Edge, press F12 → Application → Storage → "Clear site data"
📤 Right to Data Portability
You can export your calculator scenarios by copying the URL parameters. All your inputs are encoded in the URL for easy sharing and backup.
🚫 Right to Object (Advertising)
You can decline advertising cookies by clicking "Essential Only" on our cookie banner. This will prevent Adsterra scripts from loading.
6. International Data Transfers
Our website is hosted on Netlify (US-based hosting provider). When you access our site:
- Static files (HTML, CSS, JavaScript) are served via Netlify's global CDN (Content Delivery Network)
- No personal data is transmitted to our servers during calculator usage
- If you accept advertising cookies, Adsterra may transfer data internationally per their privacy policy
For EU users: Netlify complies with GDPR through Standard Contractual Clauses (SCCs). Learn more at Netlify's GDPR page ↗.
7. Children's Privacy
RentOrBuyWorld is not intended for users under the age of 16. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us immediately.
8. Changes to This Privacy Policy
We may update this Privacy Policy periodically to reflect changes in our practices or legal requirements. Updates will be posted on this page with a revised "Last Updated" date.
Last Updated: January 8, 2026
9. How to Exercise Your Rights
Since we don't collect server-side data, most rights can be exercised directly in your browser. However, if you have questions or concerns about:
- How your data is processed
- Adsterra's data collection practices
- Filing a GDPR complaint
- Requesting confirmation of data deletion
Please contact us using the information below.
Contact Us
For privacy-related inquiries, data protection requests, or general questions:
Email: efwfew1611@gmail.com
We aim to respond to all privacy requests within 30 days as required by GDPR.