Privacy Policy

Four-part Harmony Privacy Policy
Last modified: July 3, 2026
Current Version: 2.1.0

We respect your privacy. Since we started, we've aspired to build our Services with a set of strong privacy principles in mind.

Four-part Harmony is a free music related mobile application for musicians around the world. This Privacy Policy helps explain our information practices. For example, we talk about what information we collect and how this affects you.

Who is responsible for your data (Data Controller)

The data controller responsible for processing your information under this Privacy Policy is:
Vlastimil Knotek, Trieda SNP 73, 040 11 Košice, Slovakia.
Email: contact@vsw-studio.eu

In a Nutshell

What important information we do not collect

• Your name
• Your address
• Your email address (Unless you contact us)
• Your mobile phone number
• Any government or non government identification numbers through which we can identify who you are
• Any credit card numbers or bank account numbers
• Any new information (such as chords progressions) you have created using our services

What information we collect to provide you best app experience

• Usage, Crash and Log Information
• Device and Connection Information (for statistics purpose only and not to directly identify the user)
• Your email address when you contact us over email.

Whom do we share these information with

We share the collected information only to Google so that Firebase related services (such as Firebase Crashlytics, Firebase Analytics etc.) provided by them to the app developer can be used for creating a better app for the users. When you contact us by email, your email address is never shared with any third party and it's only used by the developer for responding to your comments/queries.

How long the information is retained with us

• Usage statistics is retained till you continue use our services.
• Your email communication information is retrieved with us as long as we are not cleaning up our inbox.

In Detail

When we say “we,” “our,” or “us,” we're talking about the developer of Four-part Harmony. This Privacy Policy (“Privacy Policy”) applies to the Four-part Harmony app and its related services, features, and website (together, “Services”) unless specified otherwise.

Please also read the Terms of Service (“Terms”), which describes the terms under which you use our Services.

Information We Collect

The developer receives or collects information when we operate and provide our Services, including when you install, access, or use our Services.

Information You Provide

Your chord progressions information. We do not retain your chord progressions specific information in the ordinary course of providing our Services to you.

Customer Support. You may provide us with information related to your use of our Services, and how to contact you so we can provide you customer support. For example, you may send us an email with information relating to our app performance or other issues.

Automatically Collected Information

Usage and Log Information. We collect service-related, diagnostic, and performance information. This includes information about your activity (such as how you use our Services, and the like), log files, and diagnostic, crash, website, and performance logs and reports.

Device Information. We collect device-specific information when you install, access, or use our Services. This includes information such as hardware model, operating system information, IP address, mobile network service provider, and device identifiers.

Cookies. We do not use cookies.

Third-Party Providers. We work with third-party providers to help us operate, provide, improve, understand, customize, support, and market our Services. For example, we work with Google to distribute our app, provide our infrastructure, delivery, and other systems, help us understand how people use our Services, and market our Services. These providers may provide us information about you in certain circumstances; for example, play store may provide us reports to help us diagnose and fix service issues.

How We Use Information

We use all the information we have to help us operate, provide, improve, understand, customize, support, and market our Services.

Our Services. We operate and provide our Services, including providing customer support, and improving, fixing, and customizing our Services. We understand how people use our Services, and analyze and use the information we have to evaluate and improve our Services, research, develop, and test new services and features, and conduct troubleshooting activities. We also use your information to respond to you when you contact us.

Communications About Our Services. We communicate with you about our Services and features and let you know about our terms and policies and other important updates. We may provide you marketing for our Services.

Legal Basis For Processing (EU/EEA Users)

If you are located in the European Union or European Economic Area, we process your information on the following legal bases under the General Data Protection Regulation (GDPR):

• Legitimate interests — to operate, secure, maintain, and improve the Services, including collecting usage, diagnostic, crash, and device information through Firebase (Google) so that we can fix bugs and improve stability. We balance these interests against your rights and freedoms.
• Consent — where consent is required by law (for example, for certain analytics identifiers), we process the information based on the consent you provide, which you may withdraw at any time.
• Performance of an agreement — to provide the Services you request under our Terms of Service.
• Legal obligation — where we must process information to comply with the law.

Information You And We Share

You share your information as you use our Services, and we share your information to help us operate, provide, improve, understand, customize, support, and market our Services.

Third-Party Providers. We work with third-party providers like Google to help us operate, provide, improve, understand, customize, support, and market our Services. When we share information with third-party providers, we require them to use your information in accordance with our instructions and terms or with express permission from you.

Third-Party Services. When you use third-party services that are integrated with our Services, they may receive information about what you share with them. For example, if you use a data backup service integrated with our Services (such as Google Drive), they will receive information about what you share with them. If you interact with a third-party service linked through our Services, you may be providing information directly to such third party. Please note that when you use third-party services, their own terms and privacy policies will govern your use of those services.

Assignment, Change Of Control, And Transfer

All of our rights and obligations under our Privacy Policy are freely assignable by us to any successor, in connection with a transfer of the app or its assets, or by operation of law or otherwise, and we may transfer your information to any successor entity or new owner.

Managing Your Information

We regularly clean up the data of users who are no longer using our Services. If you stop using the Services, your usage data will be deleted automatically after a short period of time. In addition, you may contact us at contact@vsw-studio.eu to ask us about, or to request the deletion of, information associated with you, and we will respond in line with your rights described below.

Your Data Protection Rights

Depending on where you live, and in particular if you are in the EU/EEA, you have the following rights regarding your personal data. To exercise any of them, contact us at contact@vsw-studio.eu. We will respond free of charge and within the timeframes required by applicable law. Please note that because we do not collect information that directly identifies you (such as your name or account), we may need additional information from you to locate any data relating to you, and in some cases we may be unable to identify your data.

• Right of access — to ask whether we process your data and to receive a copy of it.
• Right to rectification — to have inaccurate or incomplete data corrected.
• Right to erasure — to ask us to delete your data ("right to be forgotten").
• Right to restriction — to ask us to limit how we use your data.
• Right to object — to object to processing based on our legitimate interests, and to object to direct marketing.
• Right to data portability — to receive your data in a structured, commonly used, machine-readable format.
• Right to withdraw consent — where processing is based on consent, you may withdraw it at any time, without affecting the lawfulness of processing carried out before the withdrawal.
• Right to lodge a complaint — you may complain to your local data protection authority. In Slovakia this is the Office for Personal Data Protection of the Slovak Republic (Úrad na ochranu osobných údajov Slovenskej republiky), www.dataprotection.gov.sk.

Children's Privacy

Our Services are intended for users aged 13 and older and are not directed to children under the age of 13. We do not knowingly collect personal data that directly identifies any user, we do not show personalized advertising, and we do not sell personal data. The limited usage, diagnostic, and device information we collect is used only to operate and improve the app, as described in this Privacy Policy.

If you are a minor under the age at which you can provide valid consent to the processing of your personal data (for example, under 16 in Slovakia), you should use the Services only with the involvement of a parent or guardian. If you are a parent or guardian and believe your child has provided us with personal data in a manner that requires your consent, or you would like such data removed, please contact us at contact@vsw-studio.eu and we will take appropriate steps to address it.

Our Global Operations

You agree to our information practices, including the collection, use, processing, and sharing of your information as described in this Privacy Policy, as well as the transfer and processing of your information to Slovakia and other countries globally where we have or use facilities, service providers, or partners, regardless of where you use our Services. You acknowledge that the laws, regulations, and standards of the country in which your information is stored or processed may be different from those of your own country.

Updates To Our Policy

We may amend or update our Privacy Policy. We will provide you notice of amendments to this Privacy Policy, as appropriate, and update the “Last Modified” date at the top of this Privacy Policy. Your continued use of our Services confirms your acceptance of our Privacy Policy, as amended. If you do not agree to our Privacy Policy, as amended, you must stop using our Services. Please review our Privacy Policy from time to time.

Contact Us

If you have questions about our Privacy Policy, please contact us.