Privacy Policy

Let Them Know · Last updated November 9, 2026

Let Them Know is made by Teal River Technologies, LLC ("we", "us"). This policy explains what information the Let Them Know iPhone app uses and where it goes. In short: your settings stay on your phone; our service keeps only what's needed to deliver alerts between you and the people you choose, and deletes alerts after 7 days.

No accounts, no tracking

Let Them Know has no accounts or sign-in. It contains no advertising, no third-party analytics, and no tracking, and we do not sell or share your information for advertising.

Information stored on your phone

• Your emergency contacts' phone numbers and, if you choose them from Contacts, their names.
• Your alert message and settings.
• The identifier of a paired panic button.
• Your most recent location. With your permission, the app keeps a recent location on your phone so an alert can be sent instantly, without waiting for GPS.

This information stays on your phone. Deleting the app deletes it.

Information our alert service keeps

• Your iPhone's registration: a random identifier, the name you enter (shown to your contacts), and a notification token so alerts can reach this iPhone. No account, email address or Apple ID.
• App verification: a one-time confirmation from Apple (App Attest) that your iPhone is running the genuine Let Them Know app, used to prevent abuse of text messaging. It contains no personal information.
• Links between people: when a contact accepts your invitation to the app, we store their phone number and name with the link, so your alerts reach them as notifications. Invitations expire after 7 days.
• Alerts: each alert's message, your location (updated while the alert is active), and each contact's delivery status — for example, received, seen, or on the way. Alerts are deleted automatically after 7 days.
• "Added you" texts (only when text messages are offered): a record that the one-time text telling a contact who added them and how to opt out was sent to their number: the phone number, the date and whether it was delivered.
• Usage counts: how many alerts with a delivered text, text attempts and new contacts your iPhone has had this month, to apply the monthly limits.
• Terms acceptance: which version of the Terms of Service you agreed to, and when.

Information sent when you send an alert

When an alert is sent, the app sends the following to our alert service so that it can reach your emergency contacts:

• Your emergency contacts' phone numbers (not the names you saved for them).
• Your alert message and your location, including a map link.
• Technical details: the panic button's name and identifier if one is paired, your iPhone model, iOS version, and app version.

The app also sends Apple's signed record of your subscription (which plan, its dates and a transaction number — no payment details) so our service can apply the right text limit. We check it and don't keep it.

While an alert is active and its status screen is open, the app keeps sending your updated location so your contacts' maps stay current. Test Mode sends nothing.

Who processes it

• Amazon Web Services hosts our alert service and passes notifications to Apple.
• Apple delivers notifications to your contacts' iPhones.
• Twilio delivers text messages to contacts, only when text messages are offered (they currently are not). Twilio keeps records of messages it delivers under its own privacy policy.
• Your emergency contacts receive your message and location. People in the same alert can see each other's names and delivery status, but not each other's phone numbers.

How long we keep it

Alerts and their delivery status are deleted automatically after 7 days. Our service logs record technical details (not messages or locations, and at most the last four digits of a phone number) for 7 days to diagnose problems. Your iPhone's registration, links with your contacts, "added you" text records, usage counts and Terms acceptance are kept until you delete your data. Twilio keeps its own records of texts it delivered, under its privacy policy.

Subscriptions

Subscriptions are bought and managed through Apple. We never receive your payment details; the app only sends the subscription record described above.

Children

Let Them Know is not directed at children under 13, and we do not knowingly collect information from them. People aged 13 to 17 may use Let Them Know only with a parent's or guardian's permission (see the Terms). If you believe a child under 13 has used Let Them Know, email us and we will delete their information.

Text messages

Let Them Know does not currently send text messages: alerts reach only contacts who have the app and accepted an invitation. If text messages are offered in the future, emergency contacts who don't use the app would get alerts by text. When you add a contact, they would get one text saying you added them, and could reply STOP at any time to receive no more texts from Let Them Know (START to resume, HELP for help). Phone numbers are used only to deliver alerts. No mobile information is shared with third parties or affiliates for marketing or promotional purposes, and text messaging consent is never shared with anyone. More at Text Messages.

Your choices

You can turn off location, notification, and Bluetooth access at any time in iPhone Settings, remove or unlink contacts in the app, and stop receiving someone's alerts. Settings > Delete My Data removes your iPhone's registration, its links with other people, its recent alerts and the other records above from our service immediately. To ask about information we hold, or for help deleting it, email admin@tealrivertechnologies.com.

Changes

If this policy changes, we will update this page and the date above, and tell you in the app if the change is significant.