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Include your device model, iOS version, Kaffedex version, what you were doing, and what happened. Screenshots help, but remove any notes you do not want to share.

The app opens on Ask. Enter in, out and time, tap how the first sip tasted (sour, balanced or bitter), and tap "What should I change?". The move appears on the same screen. Afterwards it asks for your grinder, the dial position and the coffee's name, one at a time; each one makes the next answer more precise. Opening a new bag? Use "Opening a new bag?" and tell it the roast level for a starting shot.

Calibration from your own pulls needs two comparable shots: same grinder and burr, same basket, dose within a gram, with a meaningful change in grind setting and a change in shot time. Until then the app uses the burr preset for that grinder, and says so. Once it has two matching shots the suggestion switches to your own number, and "Why these numbers?" on the bean shows the pulls and the arithmetic.

Open Settings and choose Casual or Full control under logging depth. Casual asks for yield, time and a first-sip tap; grind, dose and setup are carried over from your last pull. Full control shows every lever: dose, grind dial, temperature, pressure, TDS, basket and prep. Only the forms change, never your data.

Open Kaffedex Settings and use the backup export. Keep the exported file somewhere you control before replacing or resetting your device.

Send the exact manufacturer, model, burr size, adjustment system, and a link to the manufacturer's specification when possible. In the meantime you can add a custom grinder with your own step size, and the app will calibrate it from your pulls after two comparable shots.

In Ask you only need in, out and time. On a bean, check that the pull includes dose, yield, time, and grinder details. Optional AI coaching also requires Pro, an internet connection and available usage.

Acaia and Felicita Bluetooth scales can send weight and time into a pull or brew, and the DiFluid R2 refractometer can send TDS. Pair them from the log form. Nothing requires hardware; the dial-in engine works entirely offline.

Open the recipe scanner and point the camera at a Kaffedex recipe card, or choose a saved photo of the card from your library. The app reads the QR code either way.

Open iOS Settings, tap your Apple Account, choose Subscriptions, then select Kaffedex. Apple handles billing, cancellation, and refund requests. The one-time lifetime purchase can be restored from the paywall with Restore Purchases.

Delete individual beans, pulls and brews inside Kaffedex. Deleting the app removes its local data from that device. Export a backup first if you may need it later.