App Lock

On iPhone, NellyList can ask for Face ID (or Touch ID) before it shows your lists. Turn it on under Account & Settings → App Lock (the row appears once your iPhone has Face ID, Touch ID or a passcode set up, and shows whether it's on). Your device passcode always works as a backup, so a glitchy Face ID can never lock you out for good.

Require Face ID after

Once App Lock is on, choose how long you can be away before the app asks again: Immediately, 30 seconds, 1 minute (the default), 5 minutes, 15 minutes or 1 hour. A quick reply to a message and back doesn't re-prompt; put the phone down for longer than your choice and it does. Opening the app fresh always asks.

Good to know

• App Lock is a setting for this device only. It protects whoever holds this phone, so it doesn't follow your account to other devices.
• Notifications and widgets are unaffected; only the app itself is locked.