Privacy Policy
Effective date: October 5, 2026
1. Introduction
Delta Fit LLC (“Delta,” “we,” “us,” or “our”) is a California limited liability company. This Privacy Policy explains how we collect, use, and protect your information when you use the Delta mobile application and the website at delta.fit (collectively, the “Service”).
This policy is effective as of September 30, 2026. By using the Service, you agree to the collection and use of information in accordance with this policy.
Questions or concerns? Contact us at support@delta.fit.
2. Information we collect
We collect the information described below. Except for diagnostics data, all of it is linked to your account. None of it is used to track you or to serve advertising.
Account and identifiers
When you sign in with Apple or Google, we receive your name and email address from that provider. We never receive your Apple or Google password. We assign your account a user ID, and our analytics service assigns an app-instance identifier to your installation of the app (this is not an advertising identifier).
Google user data
If you choose to sign in with Google, Delta requests only basic profile access (the openid, email, and profile scopes). Through Google Sign-In we receive your name, email address, profile picture, and a Google account identifier. We do not request access to your Gmail, Google Drive, Google Calendar, contacts, Google Fit, or any other Google service.
- How we use it: only to create your Delta account, sign you in, and show your name in the app. We do not use the profile picture.
- How we store it: in our authentication and database systems (Google Firebase), protected as described in Section 9, and deleted when you delete your account (Section 8). Deleting your account also revokes Delta’s access to your Google account.
- How we share it: we do not sell Google user data, use it for advertising, or transfer it to third parties, except to the service providers in Section 6 as needed to operate the Service, or when required by law.
- AI: we do not use Google user data to develop, improve, or train generalized AI or machine-learning models.
Delta’s use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. You can also remove Delta’s access at any time from your Google Account’s security settings.
Profile information
Your date of birth, sex, and timezone.
Health information
Your weight, height, other body metrics you log, and any injuries or physical limitations you tell us about.
Fitness information
Workouts and other activities you log, meal logs, meal plans, your goals, recurring commitments (such as a weekly class or run), training and nutrition preferences, and the training and nutrition targets in your plan.
Your content
Messages you exchange with the AI coach, including during onboarding, the coach's replies, notes the coach saves about you to personalize future coaching, and the text of your goals.
Purchases
Your subscription and purchase history. Payments are processed by Apple. We never receive your payment card or other financial information.
Usage information
How you interact with the app (for example, which screens you view and which features you use), your device model, operating system and app version, and your approximate region, which our analytics service derives from your IP address.
Diagnostics
Crash reports and performance data. Diagnostics data is not linked to your identity.
3. Information we do not collect
- Phone number or physical address.
- Photos, videos, or audio recordings.
- Precise location.
- Contacts, or messages outside the app.
- Browsing or search history.
- Payment card or other financial information (Apple processes all payments).
- Apple Health (HealthKit) data.
- Advertising identifiers (including Apple’s IDFA).
The app contains no advertising and no advertising SDKs. We do not track you across apps or websites owned by other companies, and we do not sell your data.
4. How we use your information
We use the information we collect to:
- Operate and maintain the Service, including your account and subscription.
- Generate personalized coaching responses, workout plans, and meal plans.
- Understand how the app is used so we can improve it.
- Diagnose crashes and technical problems.
- Communicate with you about your account.
5. AI processing
Delta’s coach, and the workout and meal plans it builds for you, are generated by AI. To do that, we share the information you give us with Google’s Gemini AI service, through Google Cloud Vertex AI. You agree to this sharing in the app before your coach is set up.
The information shared with Google Gemini includes:
- Your profile: name, age, sex, height, and weight, including weight trends.
- Your goals, recurring commitments, and training and nutrition preferences.
- Injuries and limitations you tell us about.
- Your workout, meal, and body logs, and how closely you have followed your plan.
- Notes the coach has saved about you.
- Your chat messages with the coach.
Your email address is not shared with Google Gemini unless you type it into a chat message yourself.
Google processes this information to provide the service to us, does not use it to train its AI models, and may retain it briefly for caching and abuse monitoring.
6. Service providers
We use the following service providers to operate the Service. Each receives only the information it needs to perform its function for us.
- Google Firebase and Google Cloud — account authentication, database storage for your app data, backend processing, and file hosting. Our server logs are keyed by your user ID, have free-text content scrubbed, and are retained for about 30 days.
- Google Analytics for Firebase — usage analytics. Receives your user ID, the app-instance identifier, device model, operating system and app version, approximate region derived from your IP address, how you use the app, and in-app purchase events. It does not use an advertising identifier.
- Google Gemini (via Google Cloud Vertex AI) — generates coaching responses and plans, as described in Section 5.
- Apple — Sign in with Apple, and App Store payments and subscriptions.
- Google Sign-In — account sign-in with your Google account.
- RevenueCat — subscription management. Receives your user ID, purchase receipts and history, device model, operating system, locale, and IP address.
- Sentry — crash and performance diagnostics. IP addresses are not stored.
- Expo — checks for and delivers app updates. Receives your IP address, platform, app version, and a random identifier.
7. How we share information
- We do not sell your personal information.
- We do not share your personal information for advertising, including cross-context behavioral advertising, and we do not use it to track you across other companies’ apps or websites.
- We disclose information to the service providers listed in Section 6 only as necessary to operate the Service.
- We may disclose information when required by law, legal process, or a valid government request.
8. Account deletion and data retention
We retain your information while your account is active.
You can delete your account at any time in the app, from Profile → Delete Account (or, from the subscription screen, Account). Deletion permanently removes all of your app data — your profile, logs, chats, plans, and everything else stored under your account — deletes your login account and your subscription record at RevenueCat, and revokes Delta’s access through Sign in with Apple or Google Sign-In. If you cannot access the app, email support@delta.fit and we will delete your account for you.
Deleting your account does not cancel an Apple subscription. To stop being billed, cancel in your iPhone’s Settings → [your name] → Subscriptions.
After your account is deleted, some information is retained by our service providers:
- Transaction records held by Apple.
- Crash diagnostics held by Sentry.
- Analytics data held by Google Analytics, according to its retention settings.
- Server logs, for about 30 days.
- Any information Google briefly retains for abuse monitoring in connection with Gemini.
9. Security
- All data is transmitted over TLS.
- Data at rest is encrypted by our cloud infrastructure provider (Google Cloud).
- Per-user access rules in our database ensure your data is readable only by your own account.
No security measure is perfect. In the event of a breach affecting your personal information, we will notify you as required by applicable law.
10. Your rights
You can delete your account and data in the app at any time (see Section 8). You may also request access to, correction of, or deletion of your personal information by emailing support@delta.fit.
California residents (CCPA)
If you are a California resident, you have the following rights under the California Consumer Privacy Act:
- The right to know what personal information we collect about you and how it is used.
- The right to request deletion of your personal information.
- The right not to be discriminated against for exercising your privacy rights.
We do not sell or share your personal information for cross-context behavioral advertising. To exercise your rights, use the in-app account deletion described in Section 8 or email support@delta.fit.
The Service is offered only to residents of the United States. The GDPR (EU General Data Protection Regulation) is not currently in scope.
11. Children's privacy
Delta is intended for users who are 18 years of age or older.
We do not knowingly collect personal information from anyone under 18. If we learn that we have inadvertently collected information from a minor, we will delete it promptly. If you believe a child has provided us with personal information, please contact us at support@delta.fit.
12. International users
The Delta Service is offered only to residents of the United States. If you access the Service from outside the United States, you do so at your own risk and are responsible for compliance with any applicable local laws.
13. Changes to this Privacy Policy
We may update this Privacy Policy from time to time. When we do, we will revise the “Effective date” at the top of this page. Material changes will be communicated in-app or by email to the address associated with your account. Continued use of the Service after a change constitutes acceptance of the updated policy.