Privacy Policy

Last Updated: April 7, 2026

Effective Date: April 7, 2026

Revision: 1.0

Revision History

1. Introduction

This Privacy Policy describes how Sia Makerlab ("we," "us," or "our") collects, uses, and shares information in connection with your use of the Currency Converter mobile application (the "App").

By downloading, installing, or using the App, you agree to the collection and use of information in accordance with this Privacy Policy. If you do not agree with this Privacy Policy, please do not use the App.

2. Information We Collect

2.1 Information You Provide

The App is designed to function without requiring you to create an account or provide personal information. We do not collect:

• Names or email addresses
• Phone numbers
• Physical addresses
• Payment information (processed entirely by Google Play)

2.2 Information Collected Automatically

2.2.1 Local Device Storage

The App stores the following data locally on your device only:

| App Settings | Yes | Device Only | No | Base currency and display preferences, stored via DataStore | | Cached Rates | Yes | Device Only | No | Exchange rate data cached locally via Room database for offline use | | Favorites | Yes | Device Only | No | User-selected currency pairs stored locally via DataStore |

This data is stored exclusively on your device using Android DataStore and/or Room database. We do not have access to this data, and it is never transmitted to our servers.

2.2.3 Network Requests

Exchange rate data is fetched from a third-party rate provider API over HTTPS. The request contains no personal identifiers.

2.2.2 Advertising Data (Third-Party)

The App displays advertisements through Google AdMob. Our advertising partner may collect:

• Advertising ID (Android Advertising ID)
• Device information (device type, operating system version)
• IP address
• General location data (country/region level)
• Ad interaction data

The App displays the following types of ads:

• Banner Ads: Adaptive banner displayed at the bottom of the screen
• Interstitial Ads: Full-screen ads displayed at intervals (minimum 15 minutes between displays)

This data collection is governed by Google's Privacy Policy: https://policies.google.com/privacy

2.2.3 In-App Purchase Data (Third-Party)

If you make an in-app purchase to remove advertisements, the transaction is processed entirely by Google Play. We receive only:

• Confirmation of purchase status
• Transaction ID for verification purposes

We do not receive or store any payment card information, billing addresses, or other financial data.

2.3 Permissions

The App requests the following permissions:

INTERNET

Required to fetch up-to-date exchange rate data from a third-party rate provider.

2.4 Information We Do NOT Collect

We explicitly do not collect:

• Personal information
• Location data
• Camera or microphone data
• Contacts or files
• Conversion amounts or financial activity
• Browsing history
• Communication contents

3. How We Use Information

3.1 Local Data Usage

All locally stored data is used solely to:

• Remember your app preferences and settings
• Provide core app functionality
• Provide a personalized user experience

3.2 Third-Party Data Usage

Data collected by third-party services (Google AdMob, Google Play) is used to:

• Display personalized or non-personalized advertisements (based on your consent)
• Process in-app purchases
• Prevent fraud and abuse

4. Data Sharing and Disclosure

4.1 We Do Not Sell Your Data

We do not sell, trade, or rent your personal information to third parties.

4.2 Third-Party Service Providers

The App integrates the following third-party services that may collect data according to their own privacy policies:

4.3 Legal Requirements

We may disclose information if required to do so by law or in response to valid requests by public authorities.

5. Data Retention

5.1 Local Data

Data stored locally on your device remains until you:

• Clear the App's data through device settings
• Uninstall the App

5.2 Third-Party Data

Data collected by third-party services is retained according to their respective privacy policies.

6. Your Rights and Choices

6.1 For All Users

You have the right to:

• Access: View your locally stored data within the App
• Delete: Remove all local data by clearing app data or uninstalling the App
• Opt-out of Personalized Ads: Manage ad personalization through the App's privacy settings or your device's advertising settings
• Purchase Ad-Free Version: Remove all advertising by purchasing the "Remove Ads" option

6.2 For Users in the EEA, United Kingdom, and Switzerland

Under GDPR and applicable laws, you have additional rights:

• Right to Access, Right to Rectification, Right to Erasure, Right to Restrict Processing, Right to Data Portability, Right to Object, Right to Withdraw Consent

To exercise these rights regarding data held by third-party services, please contact those services directly.

6.3 For California Residents (CCPA/CPRA)

California residents have the right to know, access, delete, and opt out of the sale of personal information. We do not sell personal information as defined by the CCPA/CPRA.

6.4 Managing Consent

Manage advertising consent through:

• In-App: Settings > Privacy & Data > Manage Privacy Settings
• Device Settings: Android Settings > Google > Ads

7. Data Security

We implement appropriate technical and organizational measures to protect locally stored data:

• Data is stored only on your device
• No data transmission to external servers (except through third-party SDKs)
• No cloud synchronization
• No user accounts or authentication data stored

8. Children's Privacy

The App is not directed to children under the age of 13 (or 16 in the EEA). We do not knowingly collect personal information from children.

9. International Data Transfers

Data collected by third-party services may be transferred to and processed in countries with different data protection laws. Please refer to Google's Privacy Policy for more information.

10. Third-Party Links and Services

The App may contain links to third-party websites or services. We are not responsible for the privacy practices of these third parties.

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last Updated" date and displaying a notice within the App for material changes.

12. Disclaimer of Liability

12.1 Third-Party Services

We are not responsible for the data collection, use, or security practices of third-party services integrated into the App, including Google AdMob, Google Play Billing, and Google UMP.

12.2 Data Loss

We are not responsible for any loss of data stored locally on your device.

12.3 Exchange Rate Accuracy

Exchange rates are provided by a third-party data source and may be delayed by up to 24 hours. Rates are for informational reference only and may differ from rates offered by banks or financial institutions. We are not responsible for financial decisions made based on information provided by the App.

12.3 Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES RESULTING FROM YOUR USE OF THE APP.

13. Governing Law

This Privacy Policy shall be governed by the laws of the Republic of Korea. For EU users, it shall be interpreted in accordance with applicable EU law including the GDPR.

14. Contact Us

Sia Makerlab

• Email: sia@siamakerlab.com
• Website: https://siamakerlab.com

For GDPR-related inquiries from EEA residents, please include "GDPR Request" in the subject line.

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Summary of Data Practices

*Collected by third-party services (Google), not by us directly.

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This Privacy Policy is available in English. If translated versions are provided, the English version shall prevail in case of any discrepancy.