The AutoSharpener iPhone app has no account, no analytics and no tracking, and it sends nothing to any server. It talks only to your sharpener, over Bluetooth, while the app is open.
The app uses Bluetooth only to connect to the sharpener you linked and to send it what you tap: start, pause, stop, speed, pattern, drip and homing. It reads back the sharpener's status and its list of patterns. Nothing leaves the phone and the sharpener.
The camera is used only while you scan the code on the sharpener's display. The picture is read on the phone and not kept.
Linking creates a key shared by this phone and your sharpener, so no one else can control it. The phone keeps it in its Keychain, the sharpener in its own memory. Forget This Sharpener in the app's Settings removes it from the phone; linking another phone replaces it on the sharpener.
The app collects no personal data, has no third-party code that does, and does not track you across apps or websites. It does not run in the background. Links in the app to autosharpener.com open in Safari.
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Questions about privacy: message us. Last updated 30 October 2026.