Privacy Policy for Gold Weight Converter

App: Gold Weight Converter Package: com.ilyas.ilyasapps.goldweightconverter Version: 2.0 Developer: Muhammad Ilyas (Mobilia Apps) Contact: muhammadilyas15@gmail.com Effective Date: May 8, 2026 Last Updated: May 8, 2026

1. Introduction

This Privacy Policy explains how the Gold Weight Converter app ("the App", "we", "our") handles information when you use it on your Android device. The App is a calculator and reference tool for gold weight conversion, karat purity, jewelry pricing, live spot-rate lookup, price alerts, and an AI-powered hallmark assistant.

We have built this App to be privacy-respecting by design:

• There is no user account and no sign-in.
• There is no cloud sync of your data.
• We do not collect your name, email address, phone number, or location.
• The vast majority of your data (calculations, history, shop profile, price alerts) stays on your device and never leaves it.

The few times the App does talk to the internet, only the minimum information needed for the feature is sent. This policy explains exactly what, when, and why.

2. Information We Collect

The App distinguishes between two kinds of data: data that stays locally on your device, and data that is transmitted over the internet for a specific feature.

2.1 Data Stored Locally on Your Device (Never Transmitted)

The following information is stored only inside the App's private sandbox on your device (Room database and SharedPreferences). It is never uploaded to a server, never synced to any cloud, and is not accessible to any other app:

The shop logo image, if you choose to add one, is selected from your device gallery using Android's privacy-safe Photo Picker (PickVisualMedia). The image is copied into the App's private storage and is used only to be drawn on PDF receipts you generate locally. It is never uploaded anywhere.

2.2 Data Transmitted Over the Internet

The App makes outbound network requests in only three situations. In each case, the data leaving your device is described below.

a) Live Gold Spot Price Lookup When you open the home screen, refresh the live rate, or use the home-screen widget, the App requests the current gold price from our Cloudflare Worker proxy at gold-price-proxy.muhammadilyas15.workers.dev. The request contains:

• The currency code you selected (for example, USD, PKR, INR)
• The weight unit you selected (for example, gram, tola)
• A static per-app authentication key embedded in the App (used to rate-limit abuse)

The request does not include any device identifier, IP-based identifier we collect, your name, email, calculation history, shop profile, or any other personal data. The proxy forwards the request to an upstream gold-price data provider and returns today's price. Responses are cached server-side for approximately 5 minutes.

b) AI Hallmark Assistant (Google Gemini) When you type a question to the in-app Hallmark Assistant, the App sends the text of your question (and a short prompt that frames it as a hallmark/karat question) to our Cloudflare Worker proxy at gemini-proxy.muhammadilyas15.workers.dev. The proxy forwards it to Google's Gemini API server-side and returns the AI's reply.

What is sent: the text you typed. What is not sent: any device identifier, your name, your email, your shop profile, your calculation history, your price alerts, or any other data from the App.

Your conversation history is saved only on your device in SharedPreferences (last 50 messages) and is never uploaded for sync or backup.

c) Crash Reports, Anonymous Analytics, and Ads See Sections 3 and 5.

3. How We Use Information

We use information only for the purpose described where it was collected:

• Calculations & history — to let you recall, favorite, copy, and share results.
• Shop profile — to render PDF receipts you can save and share.
• Price alerts — to schedule a local background check (via Android WorkManager) and post a local notification when a threshold is crossed. The check uses the same anonymous gold-price call described in Section 2.2(a).
• AI Hallmark Assistant — to send your typed question to Google Gemini via our proxy and display the reply.
• Crashlytics — to fix bugs and crashes.
• Analytics — to understand which features are used at an aggregate level.
• Ads & billing — to show ads and process the optional one-time premium purchase.

We do not sell your data. We do not profile you. We do not combine local app data with any external profile.

4. Storage and Security

4.1 On-device storage

• The Room database gold_weight_converter.db and SharedPreferences are stored in the App's private sandbox provided by Android. Other apps cannot read this storage.
• PDF receipts you generate are written to the App's cache directory and are shared with other apps (such as Gmail, Drive, WhatsApp) only when you tap Share — using Android's standard FileProvider mechanism.
• Beyond the standard Android sandbox, the App does not apply additional encryption-at-rest. Sensitive financial details should not be stored in the Shop Profile.

4.2 Network security

• All external requests use HTTPS.
• The Cloudflare Workers (gold-price-proxy and gemini-proxy) are operated by the developer of this App. They exist to keep upstream API keys server-side and to apply rate-limiting. The proxies do not persist per-user request bodies and do not create per-user accounts.

4.3 Backup behavior

The App is configured with android:allowBackup="false" and a dataExtractionRules file, which prevents Android Auto Backup from copying the App's data to your Google Drive.

5. Third-Party Services and SDKs

The App integrates the following third-party services. Each link goes to that provider's privacy policy; their handling of data is governed by their own terms.

Provider privacy policies:

• Google (AdMob, UMP, Firebase, Gemini, Play Billing): https://policies.google.com/privacy
• Cloudflare: https://www.cloudflare.com/privacypolicy/

6. The AI Hallmark Assistant — Important Disclosures

The Hallmark Assistant is a chat feature powered by Google's Gemini API, accessed through our Cloudflare Worker proxy.

• What is sent: only the text you type into the chat.
• What is stored: your conversation is stored only on your device (SharedPreferences, last 50 messages). It is not uploaded for sync or backup.
• Data and model training: requests are made to Google's Gemini API (the developer endpoint), which under Google's API terms is not used to train Google's general consumer models. This is different from Google's consumer chat products. Please review Google's AI/Gemini API terms for the most current details.
• Do not include sensitive personal data in your questions (for example, full names, ID numbers, payment details, addresses, health information). Treat the chat the way you would treat any third-party online search.
• Not financial or investment advice. The Assistant is an educational helper for hallmark, karat, and weight questions. It does not provide investment recommendations or price predictions. Always verify gold purity and pricing with a certified jeweler or assay office.
• Replies may be inaccurate. Like all generative AI, replies can be wrong, incomplete, or outdated. Do not rely on them for irreversible decisions.

7. Permissions and Why We Use Them

The App requests the following Android permissions:

The App requests gallery image access only through Android's privacy-friendly Photo Picker when you tap "Add Logo" in the Shop Profile screen. No broad storage permission is requested.

The App does not request: camera, microphone, contacts, location, calendar, SMS, call logs, biometric, or precise device identifiers.

The <queries> block in the manifest declares mailto: so that the Contact Us screen can find your email app on Android 11+.

8. Cloud Sync, Accounts, and Backups

• The App has no user accounts and no sign-in.
• The App has no cloud sync.
• The App is not wired to Firebase Authentication, Firebase Firestore, or Firebase Storage.
• Android Auto Backup is disabled (allowBackup=false).

The only data that ever leaves your device is:

1. Anonymous live-price queries (currency code + unit only).
2. The text of questions you send to the AI Hallmark Assistant.
3. Aggregated, anonymous Crashlytics and Analytics signals.
4. Standard ad-serving requests by Google AdMob (subject to your UMP consent).

9. Children's Privacy

The App is intended for general audiences (jewelers, gold traders, hobbyists). It is not directed to children under 13. We do not knowingly collect personal information from children. If you believe a child has used the App and you wish to raise a concern, please contact us.

10. Your Rights

Because the App stores nearly all data locally on your device and has no user account, you control your data directly:

• Right to access: open the App. History, favorites, shop profile, price alerts, and assistant conversations are all visible inside the App.
• Right to correction: edit or delete entries inside the App at any time.
• Right to erasure: to remove all data the App holds about you, do one of the following:
• In Android Settings → Apps → Gold Weight Converter → Storage → Clear data (wipes the local database, preferences, and assistant chat history).
• Or simply uninstall the App.
• Right to opt out of ads personalization: use the in-app consent banner (UMP) or Android Settings → Privacy → Ads → Reset/Delete Advertising ID.
• Right to opt out of Crashlytics/Analytics: uninstall the App. (We do not currently expose a separate in-app toggle.)

If you are in the EU/UK (GDPR) or California (CCPA), you have additional rights including the right to lodge a complaint with your local data-protection authority. Because we do not maintain any user account or per-user identifier on our servers, requests of the type "give me all data you have about me" are satisfied entirely by inspecting and clearing the App's local storage as described above.

11. International Data Transfers

When the App calls the Gold Price proxy or the Gemini proxy, the request is processed by Cloudflare's global edge network and (for Gemini) by Google's API infrastructure. These services may process the request in regions outside your country, including the United States. By using the affected features, you consent to this transfer.

12. Data Retention

We keep your information only for as long as it is needed for the purposes described in this policy.

• All of your entries stay on your device. We operate no server for this data and never receive a copy of it, so there is nothing for us to retain. Your data is kept until you delete the individual entry, clear the app's storage, or uninstall the App. Uninstalling removes all of it from the device.
• Crash reports (Firebase Crashlytics) — automatically deleted after 90 days.
• Analytics data (Firebase Analytics) — retained in aggregated, non-identifying form for a maximum of 14 months, then automatically deleted.
• Support emails — if you contact us, your message is retained for up to 24 months after your enquiry is resolved, then deleted.
• Purchase records — retained by Google Play for the period required by applicable tax and accounting law. We do not hold separate copies.

13. Data Deletion — How to Delete Your Data

You can delete your data at any time. Delete individual entries Open any entry in the App and tap Delete. It is removed immediately from the device. Uninstall Uninstalling the App removes all locally stored data from your device. Request deletion by email If you cannot access the App, or you want written confirmation that your data has been erased, email us at muhammadilyas15@gmail.com with the subject line "Gold Weight Converter – Data Deletion Request". We will verify the request, delete all associated data, and confirm by email within 30 days. There is no charge for this.

14. Changes to This Policy

We may update this Privacy Policy when the App's features change. The "Last Updated" date at the top of this page will reflect the most recent revision. Significant changes will be highlighted in an in-app message or in the Play Store changelog.

15. Contact

For privacy questions, data deletion requests, or any other concern:

Muhammad Ilyas — Mobilia Apps Email: muhammadilyas15@gmail.com Developer page: https://play.google.com/store/apps/developer?id=Mobilia+Apps Privacy site: https://itworldpro.com/gold-weight-converter/privacy-policy

This policy applies to the Gold Weight Converter Android application only.