Privacy Policy

Last updated: November 8, 2026

1. Introduction

Estimonia ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our website (estimonia.com), our mobile application and related services.

2. Information We Collect

2.1 Images and Photos

When you scan an item, we collect the photos you upload or capture using your device's camera. These images are used solely to generate value estimates and are stored securely on our servers. The app requires camera and photo library access permissions to provide this functionality.

2.2 Device Information

We may collect device identifiers (such as device type, operating system version, and unique device ID) for anonymous session management, app functionality, analytics, and to improve user experience.

2.3 Account Information (Optional)

If you choose to create an account, we collect your email address and optionally your name. Account creation is optional; you can use the app anonymously with session-based storage.

2.4 Contact Information (Opt-in Only)

If you opt-in to selling an item, we collect your email address and optionally your phone number. This information is only used to contact you regarding potential sales opportunities.

2.5 Usage Data

We collect information about how you interact with the app, including features used, scan frequency, and app performance data. This helps us improve our services and fix technical issues.

3. How We Use Your Information

To provide AI-powered value estimates for your items
To maintain your personal collection within the app
To contact you only if you opt-in to selling
To improve our services (using anonymized data)
To provide customer support and respond to your inquiries
To detect and prevent fraud, abuse, and security incidents
To comply with legal obligations and enforce our terms

4. AI Processing and Third-Party Data Sharing

What Data Is Sent to AI Services

When you scan an item, the following data is sent to third-party AI service providers for analysis:

Photos you upload or capture — the images of items you submit for valuation
Analysis instructions — system prompts that guide the AI in identifying and estimating the value of your item

We do not send your name, email address, device identifiers, or any other personal information to AI service providers. We also remove location and camera details from your photos when you upload them.

Who Are the AI Service Providers

We use the following third-party AI service providers to process your images and generate value estimates:

Anthropic (Claude) (San Francisco, CA, USA) — our main provider. It receives your photos to identify the item and estimate its value; an item that looks especially valuable is checked a second time by another Claude model. Privacy Policy
OpenAI (San Francisco, CA, USA) — our backup. It receives your photos only when Claude cannot complete a valuation. It also writes the Sell-it Plan checklist from an item's details (such as its name, category and valuation notes), without your photos. Privacy Policy

Under the terms of their business APIs, these providers do not use what we send to train their models by default. They process it to return the analysis and keep it for a limited time, generally up to 30 days, or longer where the law or their own safety rules require it. They are bound by their respective data processing agreements and privacy policies. We may change or add AI providers in the future and will update this policy accordingly.

Your Consent

Before your first scan, the app asks for your explicit consent to send your photos to third-party AI services. You can use the app to browse your collection and access other features without providing this consent, but scanning and valuation features require it. On our website, the upload form names these providers, and your photos are sent only when you submit them. You may withdraw your consent at any time by contacting us.

Sharing With Auction Houses and Dealers

This only happens if you ask us to. When you submit a request to sell an item — by using the “connect me with auction houses” option after a valuation, or the partner contact form in our directory — you are asking us to introduce you to businesses that may want to buy or consign your item.

To make that introduction, we may share the following with a small number of relevant auction houses and dealers:

Your name, email address and (if you provided it) phone number
The photographs of the item you submitted
The AI valuation, category and item details
Your country, postal area and stated selling timeline

Public listing (optional, separate consent). If — and only if — you tick the separate optional box, we may also list the item publicly on Estimonia (photographs, description and value range only, never your name or contact details) so interested buyers can request an introduction. This is never pre-ticked and is not required for any other service. You can ask us to take a listing down at any time.

We record your consent. When you tick a consent box we store the exact wording you agreed to, along with the date and IP address. We do not share your details with any partner — and do not list any item publicly — unless the matching consent is on record.

We may be paid for these introductions. An auction house we introduce you to may pay us an introduction fee if you consign with it and the item sells. That fee comes from the house, never from you, and never changes your valuation.

You can withdraw at any time. Email privacy@estimonia.com or contact us and we will stop sharing your details and ask any partner who received them to delete their copy. Withdrawing does not affect introductions already made.

Other Third-Party Sharing

We never sell or hand over the information you give us — your photos, valuations, account email, name, phone number or selling requests — to data brokers or advertisers. Separately, the articles on our website show advertising, and the advertising partners collect device and cookie data directly from your browser; this is explained in Section 5 below. Beyond the AI service providers described above and the seller introductions described immediately above (which only happen at your request), we may share your information only in the following limited circumstances:

Cloud Infrastructure: We use secure cloud hosting services to store data and run our application.
In-app purchases (iOS): Purchases made in the Estimonia app are processed by Apple. Our server confirms each purchase directly with Apple's App Store Server API using the transaction ID and a random purchase identifier linked to your Estimonia account. We receive the product, date, price and subscription status, never your card details or Apple ID. Apple's privacy policy applies to the payment itself.
Payments: If you buy a paid product on our website, the purchase is handled by Creem (creem.io), our Merchant of Record, which collects your name, email address, billing country and payment details to process the payment, issue the receipt and meet tax obligations. We receive the order reference, amount and email address, never your card details. See Creem's privacy policy.
Email delivery: Transactional emails (your valuation report, receipts, plans) are sent through our email provider solely to deliver them.
Analytics Services: We may use analytics tools to understand app usage and improve performance. Website visit statistics are counted on our own servers, without storing IP addresses, and deleted after 13 months; a cookie is used for them only if you accept cookies. Where analytics cookies are allowed, the website also loads Grow, a reader-engagement tool from Mediavine that measures visits for our advertising account. See our Cookie Policy.
Advertising: Mediavine and its advertising partners show ads on the articles of our website and collect device and cookie data to do so. See Section 5.
Auction experts in Türkiye: The photos, name, description, estimate and date of items scanned from Türkiye can be seen, without your name, email, phone or IP address, on a closed panel used by auction experts we work with. Items an automatic check flags as possibly protected cultural property, or as showing personal content, are not shown. Your contact details are shared with them only if you submit the selling form and tick its consent box.
Legal Requirements: We may disclose information when required by law, court order, or to protect our rights and safety.
Business Transfers: In the event of a merger, acquisition, or sale of assets, your information may be transferred to the acquiring entity.

5. Advertising on Our Website

Advertising keeps the valuation tool free. Ads appear on our guides, articles, directory and other informational pages. We do not show ads in the valuation tool, except below results estimated at a low value (under $200), and we show none at checkout, in your account, on reports and pages sent to sellers, or in the mobile app.

The ads are served by Mediavine (through its Journey program) and its advertising partners, who decide which ads to show. They collect data directly from your browser through cookies and similar technologies, as described below. We do not give them the information you give us: not your photos, your valuations, your account email, your name or phone number, or your selling requests.

Your choices:

EEA, United Kingdom, Switzerland and other regions where the law requires consent: personalised advertising runs only if you agree in the consent pop-up shown by our advertising partner. You can change that choice at any time through the privacy settings link it shows on the page.
United States: in states whose laws give you the right to opt out of the “sale” or “sharing” of personal information or of targeted advertising, a “Do Not Sell or Share My Personal Information” link appears at the bottom of the page. You can also send a Global Privacy Control signal from your browser.
Everywhere: you can block or delete cookies in your browser and use the industry opt-out pages listed below. If you opt out, you will still see ads, but they will not be personalised.

Our “Cookie settings” link controls analytics and our own visitor statistics. Advertising choices are made through the options above.

Mediavine Programmatic Advertising (Ver 1.1)

The Website works with Mediavine to manage third-party interest-based advertising appearing on the Website. Mediavine serves content and advertisements when you visit the Website, which may use first and third-party cookies. A cookie is a small text file which is sent to your computer or mobile device (referred to in this policy as a “device”) by the web server so that a website can remember some information about your browsing activity on the Website.

First party cookies are created by the website that you are visiting. A third-party cookie is frequently used in behavioral advertising and analytics and is created by a domain other than the website you are visiting. Third-party cookies, tags, pixels, beacons and other similar technologies (collectively, “Tags”) may be placed on the Website to monitor interaction with advertising content and to target and optimize advertising. Each internet browser has functionality so that you can block both first and third-party cookies and clear your browser’s cache. The "help" feature of the menu bar on most browsers will tell you how to stop accepting new cookies, how to receive notification of new cookies, how to disable existing cookies and how to clear your browser’s cache. For more information about cookies and how to disable them, you can consult the information at All About Cookies.

Without cookies you may not be able to take full advantage of the Website content and features. Please note that rejecting cookies does not mean that you will no longer see ads when you visit our Site. In the event you opt-out, you will still see non-personalized advertisements on the Website.

The Website collects the following data using a cookie when serving personalized ads:

IP Address
Operating System type
Operating System version
Device Type
Language of the website
Web browser type
Email (in hashed form)

Mediavine Partners (companies listed below with whom Mediavine shares data) may also use this data to link to other end user information the partner has independently collected to deliver targeted advertisements. Mediavine Partners may also separately collect data about end users from other sources, such as advertising IDs or pixels, and link that data to data collected from Mediavine publishers in order to provide interest-based advertising across your online experience, including devices, browsers and apps. This data includes usage data, cookie information, device information, information about interactions between users and advertisements and websites, geolocation data, traffic data, and information about a visitor’s referral source to a particular website. Mediavine Partners may also create unique IDs to create audience segments, which are used to provide targeted advertising.

If you would like more information about this practice and to know your choices to opt-in or opt-out of this data collection, please visit National Advertising Initiative opt out page. You may also visit Digital Advertising Alliance website and Network Advertising Initiative website to learn more information about interest-based advertising. You may download the AppChoices app at Digital Advertising Alliance’s AppChoices app to opt out in connection with mobile apps, or use the platform controls on your mobile device to opt out.

For specific information about Mediavine Partners, the data each collects and their data collection and privacy policies, please visit Mediavine Partners.

6. Data Storage, Retention, and Security

Your data is stored on secure servers in the United States and European Union. We implement industry-standard security measures including:

Encryption in transit (TLS/SSL) and at rest (AES-256)
Regular security audits and vulnerability assessments
Access controls and authentication mechanisms
Secure backup and disaster recovery procedures

Retention: We retain your data for as long as your account is active or as needed to provide services. If you delete your account, we will delete your personal information within 30 days, except where we are required to retain it for legal compliance (e.g., tax records, fraud prevention).

Selling requests: If you submit a request to sell an item, we keep that request and its consent record for up to 24 months so we can follow up on an introduction and demonstrate that consent was given. You can ask us to delete it sooner at any time.

7. Your Rights and Choices

Depending on your location, you may have the following rights regarding your personal information:

Access: Request a copy of the personal information we hold about you
Correction: Request correction of inaccurate or incomplete information
Deletion: Request deletion of your personal information (subject to legal obligations)
Portability: Request a copy of your data in a structured, machine-readable format
Objection: Object to processing of your personal information for certain purposes
Withdraw Consent: Withdraw consent for data processing where we rely on consent
App Permissions: You can manage camera and photo library permissions in your device settings

To exercise these rights, please contact us. We will respond to your request within 30 days.

8. Children's Privacy

Estimonia is not intended for children under the age of 13, and our website is not directed at children. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us, and we will delete such information within 30 days.

9. International Data Transfers

If you are located outside the United States, please note that we may transfer your information to and process it in the United States and other countries. These countries may have data protection laws different from your country. By using Estimonia, you consent to such transfers. We use appropriate safeguards such as Standard Contractual Clauses for EU data transfers.

10. California and Other US State Privacy Rights

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):

Right to know what personal information we collect, use, and share
Right to delete your personal information (with certain exceptions)
Right to opt-out of the sale or sharing of personal information
Right to non-discrimination for exercising your privacy rights

A note on “sale” under the CCPA: the CCPA defines a “sale” broadly, to include disclosing personal information to a third party for valuable consideration. Because an auction house we introduce you to may pay us a fee if you consign with it and the item sells, that introduction may count as a “sale” or “sharing” under California law — even though it only ever happens when you explicitly ask to be introduced. We never share the data of anyone who has not opted in. To opt out, or to have a previous introduction withdrawn, email privacy@estimonia.com.

Advertising: the cookie and device data that our advertising partners collect on our website to show personalised ads (Section 5) may also count as a “sale” or “sharing” for cross-context behavioral advertising under California law, and as “targeted advertising” under the laws of other states. To opt out, use the “Do Not Sell or Share My Personal Information” link at the bottom of the page, or turn on Global Privacy Control in your browser. We do not knowingly sell or share the personal information of consumers under 16.

Residents of other US states with comprehensive privacy laws (such as Colorado, Connecticut, Virginia, Utah, Texas, Oregon and others) have similar rights to access, correct, delete and obtain a copy of their personal information, and to opt out of targeted advertising and the sale of personal information. To use them, email privacy@estimonia.com. If we refuse a request, you may appeal by replying to our answer, and we will respond within the time the law requires.

11. European Privacy Rights (GDPR)

If you are located in the European Economic Area (EEA), United Kingdom, or Switzerland, you have rights under the General Data Protection Regulation (GDPR), including the rights listed in Section 7 above. Our legal basis for processing your data includes: consent, contractual necessity, legal obligations, and legitimate interests.

Legal basis for seller introductions: Where we share your details with an auction house or dealer, our legal basis is your explicit consent (GDPR Article 6(1)(a)). We store the wording you agreed to, the timestamp and the IP address so that consent can be demonstrated. Consent is entirely optional, is never a condition of using the valuation tool, and can be withdrawn at any time without affecting the lawfulness of processing carried out before withdrawal.

Legal basis for advertising and analytics cookies: your consent, given in the cookie banner (analytics) and in our advertising partner's consent pop-up (advertising). Without it, only non-personalised ads are shown and analytics cookies are not set.

To withdraw consent, request a copy of your data, or ask us to erase it, email privacy@estimonia.com. We respond within 30 days.

12. Cookies and Tracking Technologies

Our website uses essential cookies, analytics cookies and, on the pages that show ads, advertising cookies set by Mediavine and its partners (Section 5). The mobile app uses minimal tracking technologies: session tokens for authentication and app functionality, and no third-party advertising cookies. For the full list of cookies on our website, please see our Cookie Policy.

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by posting a notice in the app or sending you an email (if you have provided one). Your continued use of the app after changes are posted constitutes acceptance of the updated Privacy Policy.

14. Who We Are & Contact

Estimonia is operated by, and the data controller for the personal data described in this policy is:

Reaktör Teknoloji Tic. Ltd. Şti.
Şahkulu Mah. Serdar-ı Ekrem Cad. No:15/A
Beyoğlu/İstanbul 34430, Türkiye

If you have questions about this Privacy Policy, your data, or wish to exercise your privacy rights, please contact us:

Privacy inquiries: privacy@estimonia.com or the contact form
General support: Contact form