Written in plain words, because a privacy policy nobody can read is not really a privacy policy.
Last updated November 7, 2026
Lantern has no account, no login and no server. Your supplies, your people, their medications, your plan and your photos are stored on your iPhone and are not uploaded anywhere by us.
There is one optional lookup: when you scan a barcode, the barcode's digits (and nothing else) can be sent to Open Food Facts to fetch a product name. You can turn that off in Settings.
We do not sell anything, we do not run ads, and we collect no analytics. There is nothing here to sell.
All of this lives in the app's own storage on your device and is never transmitted by Lantern:
If you delete the app, all of it is gone. There is no cloud copy, because there is no cloud. Your iPhone's own backup (iCloud Backup or a computer backup) may include the app's data, under Apple's terms and your settings.
Medication and allergy details are health information. Lantern treats them exactly like everything else: kept on the device, shown only to you, and shared only when you choose to share them.
| Barcode lookup (Open Food Facts), when the setting is on | Barcode digits only |
| Weather alerts (National Weather Service), for places you save | Coordinates of those places only |
| Sharing a medication card, a plan, a profile link or an export | What you chose to share, through the app you chose |
| Purchases and subscriptions | Handled by Apple's App Store |
| Your name, email, Apple ID or phone number | Never collected |
| Your live location | Never tracked. Saved only when you tap "Use my location" on a place, meeting spot or storage spot |
| Analytics, tracking or advertising identifiers | None |
| Photos or camera frames | Processed on the device, never uploaded |
Barcode lookup. When "Look up barcodes online" is on, the digits of a scanned barcode are sent over an encrypted connection to Open Food Facts, a public, non-profit food database, which returns a product name. No other data is sent and no identifier accompanies the request. Open Food Facts' own terms apply to their service. Turn the setting off and scanning still works; you type the name instead.
Weather alerts. If you save a place (by ZIP code or by tapping "Use my location"), Lantern sends that place's coordinates over an encrypted connection to the National Weather Service's public alerts feed at api.weather.gov when you open the app and, now and then, in the background, and shows the watches and warnings in effect there. No name, identifier or other data goes with the request. A ZIP code is turned into coordinates on your phone through Apple's geocoder, under Apple's terms. Remove the place and the requests stop.
Sharing. Profile links, medication cards, plans and CSV exports are created on your phone and handed to the iOS share sheet. They go only where you send them, through Messages, Mail or whatever app you pick, under that app's privacy terms. A profile link contains the details you entered, encoded in the link itself; treat it like the information it carries.
Purchases. Family plans are sold through Apple's App Store. Apple handles payment, billing and your Apple ID. We receive no personal information about you from a purchase; the app checks your subscription status with Apple directly on your device.
Every permission is optional. Decline it and the related feature is the only thing that stops working.
Lantern is a household tool for adults. It is not directed at children under 13 and we do not knowingly collect information from them. A parent can add a child to the household; that information stays on the parent's phone like everything else.
If we add syncing between a household's iPhones, it will use Apple's iCloud (CloudKit) under your own Apple ID, encrypted in transit and at rest, with no Kismet Studio server in between. If that or anything else changes what leaves your phone, this page will say so before the feature ships, and the date at the top will change.
A person reads every message. team@kismetstudio.io
Kismet Studio is the developer of Lantern. This policy covers the Lantern app and the pages under kismetstudio.io/lantern.