Privacy Policy
Last updated: June 5, 2026
Murmur (“the app,” “we,” “us”) is an on-device AI music generation app, built to keep your creativity on your device. This policy explains what data the app handles.
On-device by default
Music generation runs entirely on your iPhone. The prompts you type, the moods you describe, and the music you create are processed and stored on your device. We don’t collect, transmit, or store your prompts or generated audio on our servers.
Information we collect
- Purchases. When you buy Murmur Pro, the purchase is processed by Apple and managed through our payments provider, RevenueCat, to deliver and restore your purchase. This includes the transaction and a non-personal app-user identifier. It isn’t linked to your name or email.
- Device verification. To confirm the app is a genuine, unmodified copy and to protect our AI models from abuse, the app uses Apple’s App Attest service, which provides a per-installation device identifier. It’s used only to authorize model downloads and prevent misuse.
We don’t require an account, and we don’t collect your name, email address, or contacts.
Microphone and speech
If you choose to dictate a prompt, Murmur uses your microphone and Apple’s speech recognition to convert your speech to text. We don’t store your voice recordings.
Model downloads
The first time you generate music, the app downloads AI model files from our content servers over an encrypted connection. These are standard network requests and contain no personal information beyond the device verification described above.
How we use data
We use this limited data only to operate the app: to deliver and restore your Pro purchase, and to protect and deliver our models. We don’t use your data for advertising or tracking, and we don’t sell your data.
Third-party services
- Apple — App Store, in-app purchases, App Attest, and speech recognition.
- RevenueCat — purchase management. Their privacy policy.
Data retention
Purchase and device-verification records are kept only as long as needed to provide the service and to meet legal and accounting requirements.
Children
Murmur isn’t directed to children under 13 and doesn’t knowingly collect personal information from children.
Your rights
Depending on your region, you may have rights to access or delete data associated with your purchase or device identifier. Contact us and we’ll assist.
Changes
We may update this policy; material changes will be reflected by the “Last updated” date above.
Contact
Questions? Email murmurapps@gmail.com.