Privacy Policy — Gold Karat Calculator
In short
- No account, name, email or phone number is needed to use the app.
- No advertising, and no advertising or analytics SDKs in the app.
- We do not track you across other companies' apps or websites, and we do not sell or share your data for marketing.
- Your calculations, saved records and receipts stay on your device.
- Location is optional. It is used only to show prices in your local currency and is not stored.
1. What we collect and why
1.1 App identifier and plan status
When you first open the app, it creates a record on our server with:
- an app-specific device identifier provided by the operating system (on iOS this is the identifier for vendor, which is different for every developer and is not the advertising identifier);
- the platform (iOS or Android);
- the date of first use and the time of the last check;
- your plan status (Free, Pro, or trial) and, if you subscribe, its expiry date;
- the time the upgrade screen was last shown, so it is not shown to you too often.
Why: so the app knows whether your device is on the Free or Pro plan, can honour trials fairly, and can protect our price service from abuse. This is used only to provide the app's features. It is not used for advertising and is not combined with data from other companies.
1.2 Location (optional)
If you allow location access, the app sends your device's coordinates to our server, which looks up your country through the BigDataCloud reverse-geocoding service, then returns gold and silver prices in your local currency. We do not store your location or keep any history of it. You can refuse or turn off location at any time in your phone's settings; the app then shows prices in US dollars or in the currency you choose manually.
1.3 Purchases
Payments are handled entirely by the Apple App Store or Google Play. We never see your card details. To manage your Pro plan, our subscription provider RevenueCat receives an anonymous app user ID and your purchase receipts.
1.4 App genuineness check (Android)
On Android, the app uses Google Play Integrity to confirm it is the genuine app installed from Google Play. Google returns a yes/no verdict to our server; we do not receive personal information from this check.
1.5 Technical data
Like any internet service, our hosting provider (Netlify) processes your IP address and basic request details to deliver prices to the app. Our server keeps short-lived security logs that may include the app identifier, used only to detect abuse.
1.6 What stays on your device
Calculations, saved transactions, receipts and PDF documents, your shop name, printer settings and app preferences are stored only on your device. Receipts are sent directly from your phone to your own printer on your local network.
2. What we do not do
- We do not show ads or use advertising identifiers.
- We do not track you across apps or websites owned by other companies, so the app does not ask for App Tracking Transparency permission.
- We do not sell, rent or share your data with data brokers or for marketing.
- We do not use analytics or profiling tools.
3. Service providers
| Provider | What it does | Data it handles |
|---|---|---|
| Apple App Store / Google Play | Payments and subscriptions | Your purchase, under their own policies |
| RevenueCat | Subscription management | Anonymous app user ID, purchase receipts |
| Google Firebase | Stores the app record described in 1.1 | App identifier, platform, dates, plan status |
| Netlify | Hosts our website and price server | IP address and request details |
| BigDataCloud | Finds your country from coordinates (only if location is allowed) | Coordinates for a single lookup |
| Google Play Integrity (Android) | Confirms the app is genuine | Integrity verdict |
Market price and exchange-rate data providers are contacted by our server and receive no information about you.
4. How long we keep data
The app record in 1.1 is kept while you use the app so your plan status keeps working, and is deleted on request. Location is not kept at all. Security logs are kept for a short period and then deleted automatically by our hosting provider.
5. Your choices and rights
- Turn location on or off at any time in your phone's settings.
- Ask us to access or delete your app record by emailing support@samcoapp.net.
- Manage or cancel your subscription: on iOS in Settings → your name → Subscriptions; on Android in Google Play → Payments & subscriptions.
- Uninstalling the app stops all data collection.
6. Children
The app is a professional tool for jewelers and traders and is not directed to children under 13. We do not knowingly collect information from children.
7. International transfers
Our service providers may process data on servers outside your country. We use providers that protect data with industry-standard security.
8. Changes
If we change this policy, we will update this page and the date at the top.
9. Contact
SamCoApp · support@samcoapp.net
ملخص بالعربية
- لا يحتاج التطبيق إلى حساب أو اسم أو بريد إلكتروني.
- لا توجد إعلانات، ولا نتتبعك عبر تطبيقات أو مواقع شركات أخرى، ولا نبيع بياناتك.
- نحفظ على خادمنا رقماً خاصاً بالتطبيق ونوع الجهاز وتاريخ أول استخدام وحالة الخطة (مجاني أو Pro) فقط، لتشغيل الخطط وحماية الخدمة.
- الموقع اختياري، ويُستخدم فقط لعرض الأسعار بعملة بلدك، ولا نحفظه.
- حساباتك وإيصالاتك ومستنداتك تبقى على جهازك.
- لحذف بياناتك راسلنا على support@samcoapp.net