Your audio stays on the phone.

Your recordings are never uploaded

Decoding, tempo tracking, key detection, boundary detection, loudness metering, clipping detection and scoring all run on your device with Apple’s audio and Accelerate frameworks. The coaching note is generated by Apple’s on-device model where that is available, and by a local template where it is not. Your imported file is copied into the app’s own storage on the phone, and results are saved in a local database. Neither is sent anywhere.

Track identification, optional

If you leave track identification on, MixGrade uses Apple’s ShazamKit, which sends compact audio fingerprints, not your recording, to Apple’s Shazam service so tracks can be named. It needs an internet connection and is governed by Apple’s privacy policy. Turn it off and the analysis runs with no network access at all.

Advertising in the free tier

The free tier is supported by advertising. MixGrade uses Google AdMob to show a banner and, from your second session onwards and at most once every three minutes, a full-screen ad. AdMob is a third party and receives the data described in Google’s policy for partner sites and apps.

On first launch you are shown a consent form and, separately, Apple’s App Tracking Transparency prompt, which asks whether MixGrade may use your data for more relevant advertising. Declining is a normal outcome and the app works exactly the same. You can reopen the privacy options from Settings inside the app at any time, and buying MixGrade Pro removes the ads entirely.

Purchases

The one-time Pro purchase is handled end to end by Apple through StoreKit. MixGrade never sees your payment details, your name or your Apple ID. The count of your free analyses is stored in the device keychain so it survives a reinstall.

This website

The site is a set of static pages. It uses Vercel Web Analytics, which is cookieless, to count page views and App Store clicks so we know which pages are worth writing. It sets no cookies, loads no external fonts and embeds no third-party widgets.

Contact

Questions about privacy: levin.schwab@gmx.de