Privacy Policy

Last updated: 20 September 2026 · Amplia — an Octo8 app · Android

Amplia is a volume booster and audio enhancer for Android. This policy explains, in plain terms, what the app does with your information. It is short because the app does very little with it.

Who we are

Amplia is developed by Octo8 — octo8.app. Contact: [email protected]

The short version

Amplia has no accounts, no login, and no advertising. Your settings, presets, profiles and listening-exposure history stay on your phone. What leaves your device is the receipt for a subscription purchase, if you subscribe, and anonymous statistics about how the app is used. Both are described below.

What stays on your device

The following never leaves your phone. It is stored in the app's private storage and is deleted when you uninstall the app:

• Your boost level, equalizer settings and enhancement toggles
• Presets and per-output profiles you create
• Your safe listening ceiling and your hearing-exposure history
• Your language choice and onboarding state
• Audio files you play in the built-in player. Amplia reads them to play them. It does not upload them, scan them, or record anything about what you listen to.

What leaves your device, and only then

If — and only if — you open the subscription screen, Amplia connects to RevenueCat, Inc., the service that verifies purchases for us. From that moment RevenueCat receives:

• An anonymous identifier it generates for your installation. We do not give it your name, your email, or any account of ours, because we do not have one.
• Your purchase and subscription status: which plan you bought, when, whether it renewed, was cancelled or was refunded.
• Basic technical information that comes with any internet request: your device model, your Android version, and your IP address.

We use this for one purpose only: to know whether you should have Pro features, on this device and on any other device where you use the same store account. It is not used for advertising, it is not sold, and it is not combined with anything else.

Payment itself is handled by Google Play. Your card details are never seen by Amplia or by RevenueCat.

RevenueCat's own privacy policy: revenuecat.com/privacy

If you never open the subscription screen, Amplia never contacts RevenueCat at all.

Analytics and Data Collection

To continuously improve the Amplia app, optimize performance, and provide you with a better audio experience, we use third-party analytics tools (e.g., Mixpanel, Google Analytics, RevenueCat). Through these tools, we collect only anonymous statistical data regarding how the app is used.

The data we collect includes:

• Device and Technical Information: Your device's operating system version (Android OS), app version, and device locale (language/region).
• In-App Activity (Anonymous): Session durations, selected equalizer (EQ) settings and audio output profiles, volume enhancement levels (dB changes), preset usage, and general interactions with app features.
• Subscription and Purchase Events: Frequency of premium feature views, subscription plan selections, and purchase statuses. (All payment transactions are securely processed through Google Play; we do not collect or store your credit card or financial information).

Important Notice: Audio Privacy

While Amplia is an audio processing application, your voice, microphone inputs, or the media content you listen to on your device (music, videos, etc.) are never recorded, listened to, or transmitted to our servers. The data collected consists solely of performance and usage metrics, such as which buttons are pressed and what numerical settings (e.g., +6 dB) are applied.

What we do not do

• No advertising, and no advertising identifier is read.
• No advertising-based tracking. The anonymous analytics we collect are never sold and never shared with ad networks.
• No crash-reporting SDK. Google Play may show us anonymous crash reports from users who opted in to share them with Google; that is Google's system, not ours.
• No microphone access. Amplia shows an estimated listening level rather than a measured one precisely so that it never has to ask for a microphone permission.
• No cloud backup. Android's automatic backup is switched off for this app, so your settings are not copied to Google Drive. On Android 12 and newer, a direct phone-to-phone transfer when you change devices is allowed, because that data never leaves your hands.

Permissions and why

• Modify audio settings — to apply the boost and equalizer. This is the app.
• Foreground service (media playback) — to keep the boost running while you listen in another app.
• Notifications — for the boost notification you can control the app from, and for one reminder before a free trial charges you.
• Read audio files — only for the built-in player, and only the files you choose to play.
• Internet — used by the subscription check described above. It comes from the RevenueCat component; nothing else in Amplia makes a network request.

Children

Amplia is not directed at children and we do not knowingly collect anything from anyone under 13.

Your choices and your data

• Uninstalling the app removes everything stored on your device.
• You can ask us to delete the purchase record associated with your installation by writing to [email protected]. We will forward the request to RevenueCat and confirm when it is done. Note that deleting it also removes the record that you are a subscriber, so your Pro access on that installation ends.
• Google Play keeps its own record of your purchases, which we cannot delete. See Google's privacy policy for that.

Changes

If this policy changes, the date at the top changes with it, and the change is described in the app's release notes. We will not start collecting something new without saying so here first.

Questions

Write to [email protected]. A person answers.

More about Amplia: octo8.app/en/amplia · The current version of this policy is always published at octo8.app/en/amplia/privacy.