Effective date: October 2, 2026
Wren is operated by Matasic Enterprises, LLC ("Wren," "we," "our," or "us"). This Privacy Policy explains how we collect, use, share, and protect information when you use the Wren mobile app, our website at thewrenapp.com, and related services (the "Services").
Wren is a wellness product. Some features are optional and use third-party AI processors. Those features are off unless you turn them on, and Section 4 explains them.
Wren does not upload logged cycle observations to Firebase, analytics providers, Sentry, or any AI processor listed in Section 4. Symptoms and confirmed bleeding may be used on your device to support Today's capacity and recovery guidance.
During beta, estimated cycle phase does not change nutrition targets, Fuel Score, training, Next Best Move, menu ranking, or AI requests. A calendar estimate does not confirm ovulation.
Cycle history does not sync between devices. Reinstalling Wren or clearing app storage removes it. Signing out does not remove it; it remains isolated to the account that created it on that device. Deleting the account removes that account's Wren-managed local cycle information. Device or operating-system backups may include app data under the backup provider's controls.
AI features are off unless you turn them on. Wren asks for your consent before sending anything to an AI processor. Your plan, Today's guidance, tracking, and workout adjustments are rule-based and work without them.
| Feature | Processor | What it does | What it receives |
|---|---|---|---|
| Food photo | OpenAI | Estimates the foods and amounts in the photo | The food photo. No profile information. |
| Voice log | OpenAI | Transcribes the recording when your phone's built-in speech recognition is unavailable | The voice recording |
| Voice log | Anthropic | Finds the foods in the transcript and checks it for signs of crisis or disordered eating | The full transcript. No profile information. |
| Menu scan | Google Cloud Vision | Reads the text in the menu photo | The menu photo |
| Menu scan | OpenAI | Organizes the menu text when Wren cannot read it reliably | The menu text, not the photo |
| Menu scan | Anthropic, or OpenAI as a backup | Ranks the menu options for you | Menu item names and descriptions, and the nutrition context below |
Wren first uses your phone's built-in speech recognition. On iPhone this runs on the device when the device supports it, and otherwise through Apple's speech service. If built-in recognition is unavailable, the recording is sent to OpenAI for transcription.
It does not include your name, email address, account ID, birth date, raw Apple Health readings, or cycle data.
Wren never adds your cycle data to AI requests. Requests that Wren builds exclude cycle observations, cycle day, estimated phase, and cycle-derived Today text. Anything you say in a voice log or show in a photo is sent as you recorded it.
Turning AI features off stops new sends. It does not delete content that was already processed.
Our settings and agreements with these processors do not allow them to use your content to train their models. Each processor keeps content for a limited time under its own terms:
AI results are estimates and can be wrong. Check them before relying on them, and do not use them for medical decisions.
We share information with the providers below so they can run parts of the Services for us. Each provider processes information under its own terms and privacy practices.
| Provider | What we use it for | Information involved |
|---|---|---|
| Google Firebase (Authentication, Cloud Firestore, Cloud Storage) | Accounts, sign-in, account emails, and cloud-backed product data | Email and sign-in credentials, and the profile, logs, check-ins, routes, consent records, and app events described in Section 2. Raw or reconstructable cycle observations are excluded. |
| Google Cloud Run | Hosting Wren's server | Requests the app sends to Wren, including AI feature requests |
| OpenAI, Anthropic, Google Cloud Vision | Optional AI features | See Section 4 |
| Apple | Sign in with Apple, built-in speech recognition, and App Store purchases | Sign-in identity, speech audio when on-device recognition is not supported, and purchase details |
| Google sign-in and the Google Calendar connection | Sign-in identity, and calendar authorization and event queries | |
| FatSecret | Food database search | Food search terms and food IDs. No account or profile information. |
| RevenueCat | Subscription management | Your account ID and purchase status |
| Sentry | Crash diagnostics | Crash and device diagnostics without user identifiers, with replay and default capture of personally identifiable information disabled |
| Vercel | Website hosting and web analytics | Basic website usage information |
| Loops | Website sign-ups and email | Name, email address, sign-up source, and any goal you share |
| Google Fonts | Fonts on the website | Standard browser request information |
We do not sell your personal information, and we do not share it for targeted advertising.
Wren's app analytics are stored in Firebase with your account ID. They record events such as a screen being viewed, a button being tapped, or a check-in step being completed. They do not record the values you enter. Analytics events are automatically deleted about 60 days after they are recorded.
For cycle tracking, Wren records three events: whether you enable or disable tracking, one later-return milestone, and one milestone when enough period lengths are logged to show an average. None of them includes per-log cycle events, symptom types, bleeding, spotting, flow, period dates, period lengths, cycle day, or estimated phase.
We retain account information for as long as needed to provide the Services, meet legal obligations, resolve disputes, and enforce agreements. We use administrative and technical safeguards designed to protect personal data, but no method of storage or transmission is completely secure.
You can delete your account in the app. Tap the profile icon at the top of the Today screen, then tap Delete account. Deleting your account removes:
Deleting your account does not remove:
Backups follow their normal retention and access controls. Wren does not promise selective deletion from immutable backups before their normal expiration.
We respond to privacy requests within 30 days. We may need to verify your identity before acting on a request.
Wren is for adults. It is not directed to anyone under 18, and we do not knowingly collect personal information from anyone under 18.
If someone enters an age under 18 at sign-up, Wren stops them from continuing. If we learn that we hold personal information from someone under 18, we delete it.
We may update this Privacy Policy to reflect product or legal changes. Updates will be posted here with a revised effective date. If a change affects what the AI features send, who receives it, or why, we will ask for your consent again in the app before it applies to you.
For privacy questions or requests, email [email protected].