Last updated: 6 November 2026
BootStick ("the app") makes bootable USB drives from an Android phone or tablet. This policy explains what data the app handles.
To do its job, the app reads the image file you choose (such as an ISO) and reads, erases and writes the USB drive you choose and confirm. It works out the file's SHA-256 checksum and shows it to you. All of this happens on your device. Your files, their names and the contents of your USB drive are not sent to us or to anyone else. The app also stores your language choice on your device.
The app has no account and does not ask for your name, email, contacts, photos or location.
The app is free and shows ads through Google AdMob. AdMob may collect and use your device's advertising ID, IP address and information about ad interactions to show ads, measure them and prevent fraud. Where required (for example in the EEA and UK), you are asked for consent first, and you can change your choice at any time in Settings → Ads privacy options. You can also reset or delete your advertising ID in your phone's Android settings. Google's policy: policies.google.com/technologies/ads.
The app uses Firebase Analytics and Crashlytics to understand which features are used and to fix crashes. This includes anonymous usage events (for example which screen was opened, which type of system image was chosen, and whether a job finished or failed), rough size ranges (free phone storage, image and USB drive size), device information and crash logs. File names and file contents are not included. It does not include your name or contact details. Google's policy: policies.google.com/privacy.
The app is not directed at children under 13.
We do not keep any data on our own servers. Data collected by Google AdMob and Firebase is kept under Google's retention policies. Uninstalling the app removes all data stored on your phone.
We may update this policy. The date at the top shows the latest version.
Questions: contact@vizoapps.com