Privacy Policy for Byte : Analyze and Portfolio Tracking App

Last Updated: December 10, 2025

Quick Summary

  • We do not create or store user accounts
  • We do not store API keys, login credentials, or transaction data on our servers
  • All portfolio, wallet, and exchange data is stored locally on your device
  • We do not sell or share personal data
  • You are always in control of your data

1. Introduction

Buy, Analyze & Track Crypto ("we", "our", or "us") is a macOS application designed for cryptocurrency market analysis, portfolio tracking, and trading-related tools.

We respect your privacy and are committed to protecting it. This Privacy Policy explains how data is handled when you use our application.

Important: We do not require user accounts and do not collect or store personal login information.

2. Data Handling Overview (Important)

The app is designed with a local-first architecture:

  • No user login or registration is required
  • No personal identity data is collected
  • No portfolio or transaction data is stored on our servers
  • No API keys are transmitted to us
  • All sensitive data remains on your device.

3. Information Stored Locally on Your Device

The following data is stored only on your device:

  • Portfolio holdings and transaction entries
  • Wallet addresses added by you
  • Saved symbols and watchlists
  • Widget configurations and app preferences
  • Exchange API keys (encrypted using macOS Keychain)

We do not have access to this data.

4. Exchange API Usage

When you connect an exchange:

  • API keys are encrypted and stored locally using macOS Keychain
  • API requests are made directly from your device to the exchange
  • We do not proxy, log, or store API requests or responses
  • We never receive or store API keys on our servers
  • Supported exchanges communicate only with your device.

5. Market Data & Third-Party Services

To display prices and market information:

  • The app may request market data from third-party data providers
  • Requests are made directly from your device
  • We do not store market queries, portfolio data, or usage data on our servers

6. Data We Do NOT Collect

We explicitly do not collect or store:

  • User login credentials
  • Exchange usernames or passwords
  • API keys on servers
  • Transaction history on servers
  • Wallet private keys
  • Personal identity information

7. Subscriptions & Payments

All purchases and subscriptions are processed by Apple App Store.

  • We do not process payments
  • We do not store billing information
  • Subscription status is managed by Apple

Please refer to Apple's Privacy Policy for payment-related data handling.

8. Data Security

We rely on macOS security features to protect local data:

  • macOS Keychain for API key encryption
  • Secure HTTPS connections for all external requests
  • No background data transmission without user action

9. Your Control & Rights

You can at any time:

  • Delete portfolio and transaction data
  • Remove API keys
  • Disconnect exchanges
  • Delete wallet addresses
  • Stop using the app

Deleting the app removes all locally stored data.

10. Children's Privacy

This app is not intended for users under the age of 13. We do not knowingly collect data from children.

11. Changes to This Policy

We may update this Privacy Policy periodically. Changes will be reflected with an updated date.

12. Contact Information

MQL Development Ltd

Email: info@mqldevelopment.com

Website: https://mqldevelopment.com