Matcha Whisk — Privacy Policy

We do not collect, transmit, store, or sell any personal data. The app has no accounts, no sign-in, and no analytics, and we receive nothing about you.

The only things the app keeps on your device are a flag noting that you have already seen the first-run instructions, your recent whisk scores for the Record panel (with your best score and streak), and the time your next servings unlock. None of it is information about you. We never receive any of it, and the app itself sends it nowhere. If Android's own backup is turned on for your phone, the system may include it in your device backup or carry it to a new phone, under your Google account settings; we have no access to that backup. Uninstalling the app removes it from the phone.

While you whisk, the app reads your phone's motion sensor (accelerometer) to animate the foam and grade your technique. Those readings are processed in memory on your device, used only for the current whisk, and then discarded. They are never stored or transmitted.

The app vibrates to simulate the bristles hitting the bowl, which is why it requests the vibration permission, and it asks Android for high-rate sensor sampling so the whisk can follow your hand. If you switch on the optional tea-ready reminder, the app schedules one local notification on your phone for when the bowl is ready (and re-arms that one reminder if the phone restarts); that is the only reason it asks for notification permission and to be woken when the phone starts, and nothing leaves the device. It requests nothing else.

The app performs no network activity and does not request internet access at all; it works entirely offline.

If you choose to share your result card, the app hands the image to the Android share sheet, and the app you pick there delivers it. We never see the card, and nothing is sent anywhere unless you decide to share it.