Privacy Policy & Terms of Use

01Information we do not collect

The app does not collect, store, or transmit any of the following:

• Raw audio or voice recordings
• Personal information — name, email, phone number, or address
• Sign-in credentials (there are no usernames or passwords)
• Contacts, photos, or precise location
• Advertising identifiers

02Microphone access

The app requests microphone permission (RECORD_AUDIO) so it can analyze the pitch and vowel quality of your voice in real time to help you practice.

• Audio from the microphone is processed only on your device, in memory, by the app's native audio engine.
• The audio stream is converted into numeric analysis values — pitch, formant estimates, amplitude — that power the visual feedback you see on screen.
• The raw audio itself is never saved to any file, exported, uploaded, shared, or otherwise transmitted off your device.
• When you close or leave the practice screen, microphone capture stops.

You can revoke microphone permission at any time in your device's system settings. Without it, the practice features of the app will not function, but the rest of the app remains usable.

03Information stored on your device

To provide features such as practice history, the app stores the following locally on your device using an on-device database:

• Session metadata you generate while practicing — timestamps, target vowel, cycle counts, and numeric performance scores
• Your personal pitch calibration value (a single Hz number)
• App preferences — for example, your language selection

This data never leaves your device. It is removed when you uninstall the app or clear its storage in your system settings.

04Analytics & crash reporting

To understand how the practice is being used at the aggregate level and to fix bugs, the app uses an anonymous analytics service and an anonymous crash reporting service.

• Analytics: records anonymous events (e.g. "practice started", "session completed", "language changed"). No raw audio. No content of your sessions beyond aggregate scores. No personal information.
• Crash reporting: if the app crashes, a stack trace and basic device information (OS version, model, language) are sent so we can fix the issue. No audio. No personal information.
• Advertising: the app contains no advertising SDKs and we do not share data with advertisers.

05Your choices & your rights

• Delete your data: uninstalling the app removes the local database from your device. To request deletion of any anonymous diagnostic data we may still hold, contact us at the email below — we will action the request within 30 days.
• Mic permission: you can revoke microphone permission at any time in your device's system settings. The practice features will then not function, but the rest of the app remains usable.
• Region: these choices apply regardless of your jurisdiction. EU/UK users: our lawful basis for processing the anonymous diagnostic data described above is legitimate interest in operating and improving the app; you may object via the contact email.

06Children's privacy

The app is not directed to children under 13, and we do not knowingly collect personal information from children. Because the app does not collect personal information from anyone, no separate measures are required for children's data.

07Security

Anonymous diagnostic data is encrypted in transit using HTTPS/TLS. Data stored locally on your device is protected by the security of the operating system.

08Changes to this policy

We may update this Privacy Policy from time to time. When we do, we will update the effective date above. For material changes, we will make reasonable efforts to notify users within the app or via the app's store listing.

09Contact

If you have questions or concerns about this Privacy Policy or the app's privacy practices, please contact:

Smbat Tumasyan — smbattumasyan@gmail.com

01Acceptance of these terms

These Terms of Use ("Terms") form a binding agreement between you and Smbat Tumasyan ("we", "us", or "the developer") regarding your use of the Sacred Vowels mobile application and any related content (together, the "App"). By downloading, installing, or using the App, you confirm that you are at least 13 years old (or the minimum digital age in your country) and that you accept these Terms and the Privacy Policy above. If you do not agree, please do not use the App.

02License to use the App

We grant you a limited, personal, non-exclusive, non-transferable, revocable license to install and use the App on devices you own or control, solely for your own personal, non-commercial use, and in accordance with these Terms and the rules of the platform (Apple App Store or Google Play) from which you downloaded the App.

You must not:

• Copy, modify, distribute, sell, sublicense, or lease the App or any of its content
• Reverse engineer, decompile, or attempt to extract the source code of the App, except to the extent such activity is expressly permitted by applicable law
• Remove or alter any copyright, trademark, or other proprietary notices in the App
• Use the App to develop a competing product, or to train any machine learning or AI model
• Use the App in a way that violates any law or the rights of any third party

03Intellectual property

The App — including its name, logo, visual design, audio guides, source code, written content, and all other materials — is owned by Smbat Tumasyan and protected by copyright, trademark, and other laws. Nothing in these Terms transfers ownership of any of these materials to you.

The seven Greek vowels and the historical and cultural traditions they belong to are part of human heritage and are not claimed as our property. What is licensed to you is our specific implementation, design, content, and software.

04Vocal practice & health disclaimer

Sacred Vowels is a vocal practice and educational tool designed to help you train your voice with the seven Greek vowels. The App is built around established vocal-training principles — pitch accuracy, breath support, sustained tone, and resonance — and provides real-time feedback to support your daily practice.

If you are preparing for a professional performance, recovering from a vocal injury, or have specific vocal-training goals, we recommend working with a qualified vocal coach alongside the App. If you have any concerns about your voice, breathing, hearing, or general health, please consult a qualified professional. Stop using the App immediately and seek medical attention if you experience pain, dizziness, hoarseness, or any other concerning symptom while practicing. You use the App at your own discretion and risk.

05Your conduct & content

The App does not allow you to upload, share, or publish content to other users, and it does not host accounts. You agree to use the App only for lawful, personal purposes and not to use it in any way that could damage, disable, overburden, or impair the App or interfere with any other user's use of the App.

06Privacy

Your privacy is governed by the Privacy Policy above, which is incorporated into these Terms by reference. In summary: all audio analysis happens on your device, no audio ever leaves your device, and the only data we receive is anonymous analytics and crash diagnostics.

07App stores & third parties

You obtain the App from the Apple App Store or Google Play. Your use of the App is also subject to those stores' own terms.

Apple-specific terms. If you downloaded the App from the Apple App Store, you acknowledge that these Terms are between you and us only, not with Apple, and that Apple is not responsible for the App or its content. Apple has no obligation to provide any maintenance or support for the App. In the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any) for the App; to the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App. Apple is not responsible for addressing any claims by you or any third party relating to the App. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

Google-specific terms. If you downloaded the App from Google Play, you acknowledge that Google is not a party to these Terms and is not responsible for the App. Your use of the App must also comply with the Google Play Terms of Service.

08No warranties

To the maximum extent permitted by applicable law, the App is provided "as is" and "as available", without warranties of any kind, whether express, implied, or statutory — including, without limitation, any implied warranties of merchantability, fitness for a particular purpose, accuracy, non-infringement, or uninterrupted or error-free operation. We do not warrant that the App will meet your requirements, that the pitch analysis will be accurate in every environment, or that defects will be corrected.

09Limitation of liability

To the maximum extent permitted by applicable law, in no event will we be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, including loss of profits, data, goodwill, or other intangible losses, arising out of or in connection with your use of, or inability to use, the App — even if we have been advised of the possibility of such damages.

Our total cumulative liability for any direct damages arising out of or relating to the App will not exceed the amount you paid us for the App in the twelve (12) months preceding the event giving rise to the claim, or, if you did not pay anything, ten US dollars (US$10).

Some jurisdictions do not allow the exclusion of certain warranties or the limitation of certain damages; in those jurisdictions the above limitations apply only to the maximum extent permitted by law, and nothing in these Terms limits any rights you have that cannot be limited by law.

10Indemnification

You agree to defend, indemnify, and hold harmless the developer from and against any claims, damages, liabilities, costs, and expenses (including reasonable legal fees) arising out of or related to your misuse of the App, your violation of these Terms, or your violation of any law or the rights of a third party.

11Termination

These Terms remain in effect for as long as you use the App. You may stop using the App at any time by uninstalling it. We may suspend or terminate your right to use the App at any time if you breach these Terms or if we discontinue the App. Sections that by their nature should survive termination (intellectual property, disclaimers, limitation of liability, indemnification, governing law) will survive.

12Changes to the App or these Terms

We may update the App and these Terms from time to time to add features, fix bugs, comply with the law, or improve the experience. When we make material changes to these Terms, we will update the effective date above and, where reasonable, notify you within the App or via the app store listing. Your continued use of the App after changes take effect constitutes your acceptance of the updated Terms.

13Governing law

These Terms are governed by and construed in accordance with the laws of the Republic of Armenia, without regard to its conflict-of-laws rules. Any dispute arising out of or relating to these Terms or the App that cannot be resolved informally will be brought exclusively in the competent courts of Yerevan, Armenia — except that you may also bring claims in the courts of your country of residence where required by applicable consumer protection law.

14Severability & entire agreement

If any provision of these Terms is held to be unenforceable, the remaining provisions will remain in full force and effect. These Terms, together with the Privacy Policy above, constitute the entire agreement between you and us regarding the App, and supersede any prior agreements regarding the same subject matter.

15Contact

If you have questions about these Terms, please contact:

Smbat Tumasyan — smbattumasyan@gmail.com