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No. Using your phone normally counts: opening the app, tapping the widget, or your phone noticing movement. You can still tap I'm OK any time.

After your quiet period (24 hours by default, adjustable from 12 to 48), you get an "Are you OK?" notification. No answer after an hour: a louder reminder. Still nothing an hour later: your contacts are notified. If your quiet period ends during your quiet hours, Lamplight waits until they're over. Using your phone or tapping I'm OK at any point cancels everything, and if contacts were already alerted they get an "all clear".

You get two prompts first, so false alarms are rare, but possible. If a contact was alerted by mistake, open the app and tap I'm OK; they'll get an all-clear. Tell your contacts what the alert means and agree on what they should do.

Use Pause and choose when checks should resume. Your quiet period counts from when the pause ends. For a night out, the Pro modes (First Date, Walk Home, Solo Travel) let you say "if I don't tap I'm OK by 23:30, tell my contact". In this mode only an explicit I'm OK counts.

Yes. Say "I'm OK in Lamplight" to Siri, assign I'm OK to the Action Button in the Shortcuts app, or add the I'm OK and Walk Home controls to Control Center. The Lock Screen widget also shows your status.

Tap Invite and share the link, QR code or 8-character code (valid for 48 hours). Your contact opens the link, installs Lamplight for free, chooses "I'm looking out for someone", and enters the code if the app doesn't pick it up automatically. The free version includes one contact; Pro allows up to five.

Your display name, when you were last active, your status, and recent alerts. Your location only during an active alert, and only if you turned location sharing on. Details are in our Privacy Policy.

When a contact taps it on an alert, your other contacts are told someone is already on it, so everyone doesn't call at once.

Ask them to check that notifications for Lamplight are allowed (Settings → Notifications → Lamplight), that time-sensitive notifications are on, and that the app is still installed. Delivery depends on their phone being online.

Health and motion data never leave your phone; only a timestamp is sent. Location is off by default. If you turn it on, only your last location is stored, roughly to the nearest 11 metres, and it's deleted the moment you turn it off.

In the app go to Settings → Delete account. Your account, contact links and alert history are removed from our server immediately. Please do this before deleting the app, otherwise your contacts may be alerted when your phone goes quiet.

Install Lamplight on the new phone and set it up again, then invite your contacts again. Delete the account on the old phone first if you still have it.

Contacts are always free. Protected people get one contact and the daily mode for free, with ads that never appear on check-in or alert screens. Pro removes ads and adds up to five contacts, the First Date, Walk Home and Solo Travel modes, and your own quiet period, as a monthly or yearly subscription.

Subscriptions are managed by Apple: Settings → [your name] → Subscriptions. Cancel at least 24 hours before renewal. Refunds: reportaproblem.apple.com.