ZN JEWELER
Privacy Policy
Effective September 22, 2026
This policy describes the ZN Jeweler iOS app, provided by Zokir Negmatov, and its support website.
No account or calculation history
ZN Jeweler does not require registration and does not ask for your name, email address or other personal details to use its calculators. Calculation inputs and results are processed on your device. They are not sent to our quotation service, and the app does not save a history of calculations.
Information stored on your device
The app stores your language preference and the latest successfully received market quotation locally. These settings and cached quotations are not a personal profile. Removing the app removes its local app data, subject to your device and backup settings.
Online quotations
The app connects to a Cloudflare-hosted service to retrieve shared metal quotations. Metals.Dev supplies quotation data to the server; the app does not send calculator inputs to Metals.Dev. Network requests necessarily expose connection information, such as an IP address and request time, to the hosting infrastructure. Cloudflare may process technical information to deliver and secure the service under its privacy policy.
Advertising and tracking
The app contains no advertising or third-party analytics SDKs. We do not use calculator inputs for advertising or tracking and do not sell personal information.
Website and support
This website is hosted on GitHub Pages. It contains no analytics scripts or contact forms. GitHub may process technical request data under its privacy statement. Support is provided through public GitHub Issues. Your issue, GitHub username and any attachments you post are publicly visible. If you voluntarily contact the developer, the information you provide is used to respond to your request. Please do not send sensitive personal or customer information.
Purchases
App Store purchases and payments are handled by Apple. The app does not receive your payment card or bank details.
Changes and questions
Any changes to this policy will be published on this page with an updated effective date. For help and privacy questions, see the support page.