Privacy Policy

1. Summary

The short version

Hyper Volume works without an account. We never ask for your name, email or phone number.
Your panel styles, audio profiles, shortcuts, equalizer settings and recordings are stored only on your device.
The Accessibility service is used to replace the volume panel. It cannot read your screen, and nothing it sees is stored or sent anywhere.
Recordings are never uploaded. Notification content is never read.
The app shows ads from Google AdMob inside its own screens (never on the panel) and uses Google Firebase Remote Config. These Google services receive limited technical data, described below.
We do not sell personal information.

2. Who we are

Hyper Volume (“the app”) is published by the Hyper Volume team (“we”, “us”). This policy explains how the app and the website at this address handle information. You can reach us at phongvanhoa.dev@gmail.com.

Because the app has no accounts and keeps your content on your device, in most cases we do not hold any personal information about you at all.

3. Data stored on your device

The following is created by you, lives in the app’s private storage on your phone, and is not sent to us:

Data	Why
Panel styles you apply, save, import or unlock	To draw your panel the way you designed it.
Panel behaviour, sliders, tools, custom shortcuts, bubble position	To remember your settings.
Audio profiles and per-app profile rules (app package names you choose)	To apply your volumes when you tap a profile or open an app.
Excluded apps	To leave volume keys alone in those apps.
Equalizer and boost settings	To keep your sound the same between sessions.
Recordings (audio files)	Saved in the app’s own folder. Copied to `Music/Hyper Volume` only when you tap Save to Music folder.
Language, onboarding and tip flags, sound & haptics setting	So the app doesn’t ask twice.

To show apps for shortcuts, profiles and exclusions, the app reads the list of apps that have a launcher icon (and which of them are camera apps). This list is used on your device only; the app does not use the “all packages” permission.

4. Accessibility service

Hyper Volume uses Android’s AccessibilityService API because it is the only way Android allows an app to replace the system volume panel. The service is off until you switch it on yourself, after a disclosure screen in the app explains its use. With your permission it is used only to:

detect presses of the hardware volume buttons, so the custom panel can be shown and the right volume stream adjusted;
draw the custom volume panel and the floating bubble on top of other apps;
know the package name of the app in the foreground, so your per-app audio profiles can be applied and volume keys can be left to camera apps and apps you excluded;
perform actions you place on the panel and tap yourself, such as screenshot, lock screen, power menu, notifications, quick settings, home, back and recent apps.

The service does not read the text, images or other content of your screen or of other apps, does not record your actions or keystrokes, and does not collect, store or share anything it observes. Nothing it sees is sent off your device. You can turn it off at any time in Settings ▸ Accessibility ▸ Hyper Volume panel.

5. Other permissions

Every permission below is optional. You can refuse or revoke it at any time; only the related feature stops working.

Permission	Used for	Leaves your device?
Notification access (“Media info”)	Reading the media session that is playing (title, artist, artwork) and controlling playback from the panel. The content of your notifications is never read or stored.	No
Do Not Disturb access	Changing ringer mode, ring and notification volume, and Do Not Disturb when you ask.	No
Microphone	The built-in recorder, only while you record. A notification is shown for as long as recording runs.	No. Recordings stay on your device unless you share or export them.
Notifications	Recorder, equalizer and hidden-bubble notifications.	No
Modify audio settings	Changing volumes and applying the equalizer, bass boost, 3D surround and audio boost.	No
Foreground service	Keeping the recorder and audio effects running while you use other apps.	No
Vibrate	Haptic feedback on slider steps and taps.	No
Internet and Advertising ID	Ads, Firebase Remote Config and the Styles Hub (see below).	Yes, as described in section 6.

The app does not request access to your contacts, SMS, call log, precise location, camera, photos or files.

6. Data that leaves your device

Service	What is sent	Why
Google AdMob and Google’s User Messaging Platform	Advertising ID, IP address (from which an approximate location may be inferred), device and app information such as model, OS version and app version, and ad interactions. Your consent choice, where it applies.	To show, limit, measure and prevent fraud in ads, and to record your consent choice.
Google Firebase Remote Config	A Firebase installation identifier, app version, platform, device language and country, and IP address.	To switch features on or off remotely, configure ads and the Styles Hub, and tell you when an update is available.
Styles Hub (our server) — browsing	A standard web request for the design catalog. Like any web request, this reveals your IP address.	To show community designs. IP addresses are kept only in short-lived technical logs.
Styles Hub — submitting a design	Only when you tap Submit: the design, its name and the nickname you type.	To review and possibly publish your design for other users. Don’t use your real name as a nickname if you’d rather not.

When you share a style code or a recording, the file or text goes to the app you choose (for example a messenger), under that app’s policy. Links and shortcuts you open are handled by the destination app or website.

Google processes this data under its own terms: see How Google uses information from sites or apps that use its services and the Google Privacy Policy.

7. Advertising & your choices

Hyper Volume is free and supported by ads. Ads appear only inside the app’s own screens — banner, native, full-screen and optional rewarded ads (for example to unlock a style). Ads are never shown on the volume panel or the floating bubble.

EEA, UK and Switzerland: before personalised ads are shown, Google’s consent form asks for your choice. Change it any time in Settings ▸ Privacy options in the app.
Everywhere: you can reset or delete your advertising ID, or opt out of personalised ads, in Android Settings ▸ Privacy ▸ Ads (or Google ▸ Ads on some phones). You will still see ads, but they won’t be based on your interests.
You can also manage Google ad personalisation at My Ad Center.

8. What we never collect

Screen content, keystrokes, passwords or anything typed in other apps.
The content of your notifications or messages.
Your recordings, or any audio from your microphone.
Contacts, call logs, SMS, photos, files or precise location.
Your name, email address or phone number (unless you email us).

We do not sell, rent or trade personal information. Data is processed only by the service providers named in section 6 (Google AdMob and Google Firebase) under their own privacy policies, or disclosed if the law requires it. Where Google uses data for personalised advertising, you control that through the choices in section 7.

10. Retention & deletion

On your device: kept until you delete it. Deleting a recording in the app removes it permanently. Clearing the app’s storage or uninstalling the app deletes everything it stored (recordings you exported to Music/Hyper Volume stay until you delete them).
Styles Hub: technical logs are kept for a short time for security and troubleshooting. Published designs stay public until removed — email us to have your design taken down.
Google: data sent to AdMob and Firebase is retained according to Google’s policies.

Step-by-step instructions are on the Data Deletion page.

11. Security

Network requests from the app use encrypted HTTPS connections. Data on your device is kept in the app’s private storage, which other apps cannot read. No method of storage or transmission is perfectly secure, but we keep what we handle to the minimum described here.

12. Children

Hyper Volume is a general audience utility and is not directed at children under 13 (or the equivalent minimum age in your country). We do not knowingly collect personal information from children. If you believe a child has sent us personal information, for example in a Styles Hub nickname, contact us and we will delete it.

13. International transfers

Google and our hosting providers may process data in countries other than yours, including the United States. Where required, these transfers are protected by safeguards such as standard contractual clauses.

14. Your rights

Depending on where you live (for example under the GDPR, UK GDPR or US state laws such as the CCPA), you may have the right to access, correct, delete or port your personal data, to object to or restrict processing, and to withdraw consent at any time. Because the app keeps your content on your device, you can exercise most of these rights directly in the app or in Android Settings. For anything else — including a Styles Hub submission — email us. You also have the right to complain to your local data protection authority.

15. This website

This website is a set of static pages. It sets no cookies, has no forms or accounts, runs no analytics or advertising, and loads no fonts, scripts or images from third parties. Like any website, the hosting and network providers that serve it process technical request data — IP address, browser user agent, the page requested and the time — to deliver pages, protect against abuse and diagnose errors. These logs are kept for a short time and are not used to identify or profile visitors.

16. Changes to this policy

We may update this policy when the app or the law changes. The effective date at the top always shows the latest version. Continuing to use the app after an update means the updated policy applies.

17. Contact

Questions or requests about privacy? Email phongvanhoa.dev@gmail.com or use Settings ▸ Contact us in the app. We aim to reply within 30 days.