Mutemix Privacy Policy

Last updated: 10 November 2026

This policy describes how the Mutemix app for Android and the website mutemix.com handle your data.

Who we are

Mutemix is provided by Walter Clark, who is responsible for your personal data (the controller) under the EU General Data Protection Regulation (GDPR). Google is a separate, independent controller for the advertising data it receives through AdMob.

Email: support@mutemix.com

What stays on your phone

• You choose a song or video with Android's file picker, or share one to Mutemix. The app can open only that file.
• Splitting happens on your phone, without an internet connection. The song, its parts, your mixes and your settings are kept in the app's private storage, which other apps cannot read.
• Videos: the app normally keeps only the sound. If it cannot extract the sound, it keeps a copy of the whole video until you delete the song. Where Android allows it, the app keeps permission to open the video you chose. Deleting the song releases that permission.
• Your privacy choice, whether you own Pro and how many ads the app has shown are also stored only on your phone.
• Android cloud backup and phone-to-phone transfer are turned off for the app.

None of this is sent to us, to Google or to anyone else.

When files leave the app

Files leave the app only when you choose one of these actions:

• Save: audio files (M4A or WAV) are saved to the Music/Mutemix folder. Other apps that you allowed to read your music can see them.
• Video: MP4 files are saved to the Movies/Mutemix folder. If you choose a photo for the picture, the app reads it only while it creates the video. Other apps that you allowed to see your photos and videos can see these files.
• Share: Android sends the file to the app you choose, and that app's privacy policy applies. We never receive it.
• Report a problem (in About): the app prepares a short text with the app version, your phone's maker and model, its Android version, free memory and, on Android 11 or newer, how the app closed the last few times. It contains no songs or file names. You see the text before it is sent, and it goes only where you send it with an app of your choice. If you send it to us, we receive it together with your email address (see "If you contact us" below).

Permissions the app uses

• Notifications: to show splitting progress and playback controls.
• Run in the background and keep the phone awake: so that splitting, saving and playback continue when you leave the app.
• Internet and network state: for ads, Google's consent message and buying Pro. Splitting, playback and saving never need the internet.
• Advertising ID: read by Google's ad software to show ads in the free version.
• Basic phone state (added by Google's ad software): for example, the type of mobile network. It gives no access to your phone number, calls or contacts.
• Google Play billing: to buy Pro.
• Storage, only on Android 8 and 9: required on these versions to save files to Music and Movies. It would also allow reading shared storage, but the app uses it only to save files.

The app does not request access to your microphone, camera, location or contacts.

Ads: what is sent to Google

The free version shows ads through the Google Mobile Ads SDK (Google AdMob). Where the law requires consent, the app asks for it with Google's User Messaging Platform. When the app loads or shows an ad, Google's ad software collects the following data and sends it to Google in encrypted form:

• IP address, which can reveal your approximate location (not your exact position);
• device identifiers: your advertising ID, the app set ID and, where applicable, other identifiers of accounts on your phone;
• how you use the app and the ads, for example app launches, taps and video views;
• diagnostics, for example launch time, freezes and energy use.

Google uses this data to show and measure ads and to prevent fraud. The app never gives Google your songs, parts, mixes, videos or file names. How Google uses this data: policies.google.com/technologies/partner-sites

Ads may also come from Google's ad partners. In the EEA, the UK and Switzerland, Google's consent message appears before any ad loads. It lists these partners and asks whether your data may be used for personalised ads and whether information may be stored on or read from your phone. Google chooses personalised ads based on information about you, such as your activity in other apps (profiling). Non-personalised ads are based only on information such as the app and your general location. Neither type of ad has legal or similarly significant effects on you. If you decline, you can still use the app and will see non-personalised or limited ads. In other regions, ads may be personalised unless you turn this off in your phone's settings.

Your ad choices

• Change your consent choice: in the app, open About > Privacy choices. In US states with privacy laws, this is where you find "Do Not Sell or Share My Personal Information". The option appears where the law requires it and needs an internet connection.
• Delete or reset your advertising ID in your phone's settings (usually Settings > Privacy > Ads).
• Google's ad settings: adssettings.google.com
• Buy Pro: the app then no longer loads Google's ad software.

Buying Pro

• Pro is a one-time purchase through Google Play. Google collects your payment details under the Google Payments Privacy Notice (payments.google.com). We never see your card or bank details.
• Google gives us a record of each purchase (order number, product, price, date, country). We use it only for refunds, support and tax records.
• The app itself checks with Google Play that you own Pro and stores the result on your phone.
• Google Play's billing software sends Google technical logs about its purchase functions for every user, including Pro users and people who declined ad consent. These logs contain no songs.

Crash reports and statistics

The app has no crash reporting or analytics of its own. Google Play gives us install statistics and crash reports from people who allowed Android to share diagnostic data with Google. They show the phone model, the Android version and where the problem occurred, not who you are. We use them only to fix problems.

If you contact us

When you email us or send a problem report, we receive your email address and what you write or attach. We use it to answer you and to fix problems. For some requests we also keep a short record:

• Complaints (required by consumer protection law): your name, when and how you contacted us, the subject and our reply.
• Refund requests: order number, date, country, amount and reason.
• Copyright notices and security reports: who sent them, what they concerned and what action we took.

No law or contract requires you to give us this data, but without it we cannot answer you or handle your request.

Legal bases (GDPR)

• Consent: personalised ads, and storing or reading information on your phone where consent is required. You can withdraw consent at any time in About > Privacy choices.
• Legitimate interests: non-personalised ads, which keep the app free; ad measurement; fraud prevention; crash reports; answering your messages; running our website and email securely; keeping records of copyright notices and security reports; and establishing or defending legal claims. You can object at any time by emailing us.
• Contract: your Pro purchase.
• Legal obligation: purchase and refund records under tax law, the complaints record under consumer protection law, and reporting serious security problems under the EU Cyber Resilience Act.

Who receives data

• Google (AdMob, the consent tool and Google Play) and, through AdMob, the ad partners listed in the consent message.
• Google as our service provider for Gmail and Google Drive, acting on our instructions.
• The providers that run our website and email, acting on our instructions. They receive your IP address and standard request details when you open our website, and they forward emails sent to us to our inbox.
• Authorities, only when the law requires it, for example when we must report an actively exploited security problem. We leave out the reporter's name and email address unless the law requires them.

We do not sell your data or share it with anyone else.

International transfers

Google and the providers that run our website and email may process data outside your country, including in the United States. For data from the EEA, the UK and Switzerland, they rely on the EU-U.S. Data Privacy Framework (with its UK Extension), the Swiss-U.S. Data Privacy Framework or Standard Contractual Clauses. To get a copy of these safeguards, email us. Details for Google: policies.google.com/privacy/frameworks

How long data is kept

• On your phone: until you delete the song or uninstall the app. Files saved to Music/Mutemix or Movies/Mutemix stay until you delete them.
• Ad data: we store none. Google keeps it under its own policies: policies.google.com/technologies/retention
• Website request details: only as long as needed to deliver and protect the website.
• Emails and problem reports: deleted 12 months after your request is resolved.
• Complaints: kept for at least 1 year from receipt, then deleted together with the email 12 months after the case is resolved.
• Purchase and refund records: as long as tax and accounting law requires.
• Copyright notices and security reports: 12 months after the case is closed.
• Legal claims: if we need any of these records to establish or defend a legal claim, we keep it until the claim is settled.

Security

Google's software sends its data encrypted (TLS). We run no servers and keep no user database or user accounts.

Children

Mutemix is not directed at children under 13 and does not ask for anyone's age. Everyone sees the same kind of ads: only ads that Google rates as suitable for most audiences. If you are below the age at which you can give consent on your own in your country, ask a parent before you answer Google's consent message, or choose "Do not consent". If you believe a child under 13 is using the app, please contact us.

Your rights

Depending on where you live, you may have the right to access, correct or delete your data, to restrict its use, to receive a copy of it, to object to its use and to withdraw your consent at any time. To use these rights, email us. We hold no ad data about you ourselves. To control how ad data is used, change your choice in About > Privacy choices, reset your advertising ID, or manage the data Google holds as described in Google's privacy policy (policies.google.com/privacy).

You also have the right to complain to a data protection authority, for example in the EU country where you live or work.