Privacy
Last updated November 15, 2026.
Worktree Labs collects no information through Safety Words. Your safe word, safe number and circle are kept in your own iCloud and shared only with the people you invite.
Introduction
This Privacy Policy describes how Worktree Labs LLC ("Worktree Labs", "we" or "us") handles information in connection with the Safety Words app for iPhone ("Safety Words") and its website. Safety Words has no accounts, Worktree Labs operates no servers for it, and we do not collect, receive, store or process any information from the app about the people who use it. The one thing we do receive is a message you choose to send us through our support page, described under Our Websites and Support Form.
Information We Collect
We do not collect any information from you through Safety Words. You do not create an account with us, Safety Words contains no analytics, advertising or tracking code, and nothing in Safety Words identifies you to Worktree Labs. The information described below is created in the app and kept in your iCloud and on your iPhone, and none of it is transmitted to Worktree Labs.
Your circle. This includes the circle's name, your family's safe word and, if you set one, a safe number, who set each of them and when, and the names and stickers of the people in the circle.
Face ID. Safety Words asks Face ID, Touch ID or your passcode before it shows the safe word or number. This check is made by iOS, which tells Safety Words only whether it succeeded. Safety Words never receives your face or fingerprint data.
Settings. Your choice of look (Fun, Default or Field) and similar preferences are kept on your iPhone.
How Your Information Is Stored
Your circle is stored in your own iCloud account, through Apple's CloudKit service. It is kept as one record in your private iCloud database. The circle, including the safe word and number, is written to CloudKit's encrypted fields, which are encrypted on your iPhone before they are sent to iCloud. Two fields are stored without that encryption: a version number used to keep copies in step, and the circle's name, which iCloud shows as the title of an invitation. Apple also keeps its own details about the record, such as when it was changed and who takes part in the share. Worktree Labs has no access to your iCloud account and no copy of the record.
To notice a change made on another iPhone, each iPhone keeps a salted hash of the safe word, and one of the safe number, in Safety Words' own storage on that iPhone. The salt is made on that iPhone and is never synced. The hash can't be turned back into the word or the number.
Sharing Your Information
Inviting people. When you invite someone, Safety Words shares the circle's record with them through iCloud sharing. The circle is shared only with the people you invite. The share is set so that nobody can join by finding a link: each person must be invited. Each person in the circle can see and change the safe word and number. The person who created the circle can remove someone, and anyone who joined can leave.
Notifications. When the safe word or number changes, the iPhone that made the change shows one local notification saying who changed which. The other iPhones in the circle are told to fetch the change by a silent notification from iCloud that carries no text. No notification ever carries the safe word or the safe number.
Third-Party Services
Safety Words relies on a small number of services provided by Apple. Where information leaves your iPhone for one of these services, it goes to Apple, not to Worktree Labs, and is subject to Apple's Privacy Policy.
iCloud. Your circle is stored and shared through CloudKit, as described above.
Tips. If you leave a tip, the purchase is made through the App Store with Apple's In-App Purchase. Apple handles the payment, and Safety Words keeps nothing about it.
More from Worktree Labs. Rows in the app may open another app's App Store page or a web page in Apple's in-app Safari view. Safety Words adds no tracking or campaign information to either.
Safety Words includes one software library from another company, Lottie, an animation library published by Airbnb, which plays animations bundled in the app and does not collect or send any information. Safety Words contains no networking code of its own.
Our Websites and Support Form
Safety Words' pages, at safetywords.worktreelabs.com, and our company website, worktreelabs.com, are hosted by Vercel, which processes Internet Protocol (IP) addresses to deliver pages, as any web host does. They count page views and measure page speed with Vercel's analytics, which set no cookies and do not identify you. Neither carries advertising.
Our support page has one form. If you send it, we receive what you type into it: your name, your email address, an organization if you give one, and your message. Nothing from Safety Words is attached to it. The form is delivered to our email inbox by Cloudflare Email Service, our email provider. To keep automated submissions out, the form may be checked by Cloudflare Turnstile and counted against a limit kept for ten minutes by Upstash, both of which use your IP address. We keep your message for as long as we need it to answer you, use it for nothing else, do not sell or share it, and delete it when you ask us to.
Analytics, Advertising and Tracking
Safety Words contains no analytics, advertising or tracking of any kind. We do not sell or share your information. Safety Words does not track you across other companies' apps or websites. Nothing you enter in Safety Words reaches Worktree Labs, so none of it is read by a person at Worktree Labs or processed by an artificial intelligence (AI) model on our behalf.
Data Retention and Deletion
Your circle stays in your iCloud until it is deleted. Leaving a circle you joined takes you off its share and leaves the circle's owner's record untouched. Removing someone from your circle stops sharing it with them. Deleting Safety Words from your iPhone removes what it stored on that iPhone; the circle's record in iCloud is kept in your iCloud account under Apple's control, and you can remove an app's iCloud data in your iPhone's iCloud settings. Copies of deleted information may remain in backups made before the deletion. Worktree Labs holds no copy of your information, so there is nothing for us to delete on your behalf.
Your Rights
Depending on where you live, you may have the right to know what personal information a company holds about you, to get a copy of it, and to have it corrected or deleted. Laws that may give you these rights include, for example, the California Consumer Privacy Act (CCPA), as amended by the California Privacy Rights Act (CPRA), Cal. Civ. Code § 1798.100 and following (California Legislative Information; California Privacy Protection Agency), the Virginia Consumer Data Protection Act, the Colorado Privacy Act, the Connecticut Data Privacy Act, the Utah Consumer Privacy Act, the Texas Data Privacy and Security Act and the Oregon Consumer Privacy Act (sources last checked November 9, 2026). Each applies to a business only in the circumstances it sets out.
Because Worktree Labs holds no information about you from Safety Words, and your circle is available to you in the app, you can see, change and delete it yourself, as described above. Whether or not a particular law applies to us, we will answer a request from any user to know, copy, correct or delete the personal information we hold about them. If you have sent us the support form, you can ask us for a copy of what you sent or ask us to delete it. To make a request, contact us through our support page.
Children's Privacy
We do not collect personal information from anyone through Safety Words, including children under 13, as defined by the Children's Online Privacy Protection Act (COPPA) Rule, 16 C.F.R. Part 312 (last checked November 9, 2026). A child's name may be added to a family's circle by a parent or guardian, and is kept in the family's iCloud, not by us. If you believe a child under 13 has sent us personal information through our support form, contact us through our support page and we will delete it.
Changes to This Policy
We may update this Privacy Policy from time to time. If we make a material change, we will publish the updated policy on this website and update the date at the top of this page before the change takes effect. If we add a feature that sends information you enter in Safety Words to Worktree Labs, we will update this policy before that feature is offered.
Contact Us
If you have any questions about this Privacy Policy, please contact us through our support page.