Privacy Policy

This Privacy Policy explains how Trader Calculator. processes data when you use the Telegram Mini App.

1) Data we process

• Telegram Mini App data: Telegram user ID, username, first name and language code may be used to identify your app profile and sync data.
• App settings: selected language, theme, accent color, Premium theme, font and interface preferences.
• Calculator data: saved calculation history, analytics summaries, achievements and app usage state that you create inside the app.
• Premium data: plan, active status, expiration time, lifetime status, payment/order identifiers and confirmation state.
• Wallet data: connected TON wallet address may be processed when you connect a wallet or create a TON payment order.
• Technical data: basic device/browser information, errors, timestamps and network request metadata may be processed for security and stability.

2) Why we process data

• To run calculators, history, achievements, Premium features and saved preferences.
• To synchronize your app data between sessions and devices through server storage.
• To verify TON payments and Telegram Stars payments.
• To improve stability, performance, security and user experience.
• To provide support when you contact us.

3) Local and server storage

Trader Calculator. uses local browser storage for fast startup and interface caching. The app also uses server storage to save preferences, history, achievements, analytics state and Premium status so they remain available after reloads and across sessions.

4) Analytics

The app may use analytics events such as screen views, button clicks, errors and feature usage. Analytics are used to improve performance, stability and interface quality. We do not sell personal data.

5) Payments and wallet providers

• TON transactions are created in the app and signed in your wallet.
• Telegram Stars payments are handled through Telegram payment mechanisms.
• Wallet providers, Telegram, TON API providers and blockchain explorers may independently process technical/payment data according to their own policies.
• Blockchain transactions are public and cannot be deleted or reversed by us.

6) Third-party services

The app may interact with Telegram WebApp, TON Connect, TON API providers, market/indicator APIs, analytics providers, Cloudflare, Vercel, Railway and other infrastructure providers required to operate the app. These providers may process IP address, user-agent, request metadata and service logs.

7) Data retention

• Local cache stays on your device until you clear app/browser data.
• Server data is retained while needed to provide app functionality, Premium access, fraud prevention, support and service stability.
• Payment/order records may be retained for accounting, dispute handling and abuse prevention.

8) Security

We use HTTPS and server-side authorization checks for Telegram Mini App requests. No online service can guarantee absolute security. Do not send seed phrases, private keys, passwords or sensitive wallet credentials through the app or support chat.

9) Your choices

• You can clear local browser data on your device.
• You can remove app history through in-app controls where available.
• You can disconnect your TON wallet in the wallet interface.
• You can contact support to request help with app data or Premium status.

10) Contact

Support: @ChalovSupportBot