Aether
Privacy policy · effective October 16, 2026
Aether does not collect, store or share personal data. There are no accounts, ads, analytics or tracking, and the app does not send anything to the developer or to any server.
Bluetooth
Aether listens to the Bluetooth signals that nearby devices broadcast and turns their strength and fluctuation into sound. This happens entirely on your iPhone, only while the app is open. The identifiers iOS gives Aether for those devices are random to this app, kept in memory only, and discarded when the app closes. Nothing about the devices around you is saved or transmitted.
Duo with Bellweathered
When Duo is on (it is by default, for a few minutes after launch; you can turn it off in Settings › Duo), Aether looks for the Bellweathered app on a nearby iPhone using Apple's peer-to-peer connection (Bluetooth or direct Wi-Fi, no internet). When the two connect, they exchange musical information directly with each other, encrypted: key, scale, tempo, chord changes, and a short summary of each app's surroundings (for Aether, how many devices it hears and how much the radio field is moving; for Bellweathered, the weather and the place name it shows). Nothing is sent anywhere else. You can turn the search off at any time.
Stored on your device
Aether remembers only your duo preferences (on/off and how long to search) and a random name for duo pairing. Deleting the app removes them.
Children
Aether collects no data from anyone, including children.
Changes and contact
If this policy changes, the new version will appear on this page with a new date. Questions: open an issue on GitHub.