1. Information We Collect and How We Collect It
Letterfly collects information that users provide directly, information generated when users use the service, information received from authentication and payment providers, and limited technical information processed by service providers that support Letterfly's operation.
Account and authentication information
- Google or Apple account identifiers used to authenticate your account;
- Email address when it is made available by Google, Apple, or the applicable authentication provider;
- Firebase user identifier (Firebase UID);
- Authentication and account-status information needed to maintain and secure your Letterfly account.
Letterfly does not display your Google or Apple account information to other Letterfly users.
Profile and eligibility information
- Nickname;
- Date of birth;
- Calculated age and adult-eligibility status;
- Gender;
- Country or region;
- Matching or recipient preferences selected in the app.
This information is collected when you create or update your Letterfly profile and is used to determine eligibility, provide matching features, and operate the service.
Messages and user-generated content
- New firefly messages;
- Conversation messages;
- Conversation and read status;
- Other information voluntarily included by a user in a message or support request.
Messages are collected when you submit them through Letterfly and are stored and transmitted as necessary to deliver the messaging service.
Safety and moderation information
- Reports and report reasons;
- Blocking records;
- Relevant message evidence associated with a report;
- Moderation decisions and enforcement actions;
- Appeals and review records;
- Records reasonably necessary to investigate abuse, fraud, safety incidents, or violations of our policies.
Purchases and subscriptions
- Product identifiers;
- Purchase and transaction status;
- Subscription entitlement and expiration status;
- Purchase-verification information;
- Purchased credit balances;
- Store transaction information made available by the Apple App Store or Google Play.
Letterfly does not directly collect or store your App Store or Google Play payment-card number. Payment processing is performed by the applicable storefront.
Notifications and technical information
- Push notification tokens;
- Notification language preference;
- Last activity time;
- App version and platform information;
- Technical, security, fraud-prevention, and service-error information generated while operating Letterfly.
Advertising and consent information
Where advertisements are available, advertising providers may process limited device, application, advertising, consent, and ad-interaction information needed to provide, measure, secure, and personalize advertisements, subject to your consent choices and applicable platform rules.
2. How We Use Information
Letterfly uses information for the following purposes:
- Creating, authenticating, and maintaining user accounts;
- Determining whether a user satisfies Letterfly's minimum age requirement;
- Providing profiles, matching, messaging, and conversation features;
- Delivering push notifications about new fireflies, messages, and account-related events;
- Applying sending limits, conversation rules, and purchased-credit balances;
- Processing and verifying purchases, subscriptions, restorations, and entitlements;
- Displaying and measuring advertisements, subject to applicable consent requirements;
- Detecting, reviewing, and preventing abuse, fraud, harassment, spam, unsafe conduct, and policy violations;
- Processing reports, blocks, enforcement actions, and appeals;
- Providing customer support;
- Maintaining service security, reliability, and technical operation;
- Complying with applicable legal obligations and responding to lawful requests.
3. Automated Safety Systems and Third-Party AI
Letterfly uses automated safety systems to assist with moderation of user-generated content.
In particular, the text of a new first-contact message may be submitted for automated safety analysis before it is delivered to another user. When a user report is submitted, relevant message content may also be analyzed as part of the safety review process.
Letterfly uses Google Vertex AI (Gemini) as a third-party artificial intelligence service for certain moderation functions. This means that the message text or relevant conversation excerpts described above may be transmitted to Google for the limited purpose of performing safety analysis.
Letterfly does not intentionally send your Google or Apple password, payment-card information, or other authentication credentials to the AI moderation service.
Before messaging features are enabled, Letterfly presents users with this Privacy Policy and obtains affirmative acceptance of the privacy terms. That consent includes the limited processing and transmission of message content described in this section for safety and moderation purposes.
Automated systems may assist in determining whether content violates Letterfly's safety rules. Where an enforcement decision is eligible for appeal, Letterfly may provide an appeal mechanism and human review.
4. Third-Party Services and Data Sharing
Letterfly uses third-party services only where reasonably necessary to operate, secure, monetize, and support the service. Depending on the feature used, information may be processed by the following providers:
- Apple — Sign in with Apple, App Store distribution, In-App Purchase, subscriptions, and related storefront services;
- Google — Google Sign-In and related authentication services;
- Google Cloud and Firebase — authentication, database storage, server functions, account management, security, and backend infrastructure;
- Google Vertex AI (Gemini) — automated safety and moderation analysis as described in this Privacy Policy;
- Google Mobile Ads / AdMob — advertising delivery, advertising consent, fraud prevention, and advertising measurement;
- RevenueCat — purchase and subscription entitlement management and synchronization between store purchases and your Letterfly account;
- Expo — push-notification delivery infrastructure and related technical services;
- Google Play — Android app distribution, digital purchases, and subscriptions where Letterfly is available on Android.
Information is shared with these providers only to the extent reasonably necessary for the applicable service or function.
Letterfly requires third-party service providers that process user information on its behalf to handle that information under applicable contractual, security, privacy, and legal requirements providing protection consistent with this Privacy Policy and applicable platform requirements.
5. Advertising, Tracking, and Privacy Choices
Letterfly may display standard interstitial advertisements and optional rewarded advertisements. Google Mobile Ads and Google's consent-management services may be used to provide and manage these advertisements.
Advertising behavior may vary according to your location, privacy choices, device settings, and applicable laws and platform requirements.
Where consent is required, Letterfly or its advertising provider presents an appropriate consent interface before processing information for the applicable advertising purpose.
Where Apple's App Tracking Transparency framework applies, tracking permission will be handled in accordance with Apple's requirements. Letterfly does not require users to allow tracking in order to access the app's core messaging features.
Where available, users can review or change advertising privacy choices through Letterfly's advertising privacy settings or through applicable device and platform settings.
6. Push Notifications
Letterfly may request permission to send push notifications. If permission is granted, a push notification token may be generated and stored to deliver notifications about new fireflies, new messages, or important account and safety events.
Push notifications are optional. You may disable notification permission through your device settings.
7. Data Retention and Account Deletion
Letterfly retains personal information only for as long as reasonably necessary for the purposes described in this Privacy Policy or as required by applicable law.
While your account is active, account and profile information is retained as necessary to provide Letterfly. Messages and conversation records are retained as necessary to provide the messaging service.
When you delete your Letterfly account, Letterfly deletes the account record, active profile information, and personal data and user-generated content associated with that account, except information that Letterfly is legally required to retain.
Where applicable law requires specific records to be retained after account deletion, those records will be limited to what is required, protected from ordinary use, retained only for the required period, and deleted when the retention obligation ends.
Users can initiate account deletion directly in the Letterfly app through the account settings. Information about the deletion process is also available on our Account Deletion page.
Deleting a Letterfly account does not automatically cancel an Apple App Store or Google Play subscription. If you have an active subscription, you must separately manage or cancel it through the applicable storefront.
8. Your Privacy Rights and Consent Choices
Depending on your country or region and applicable law, you may have rights regarding your personal information, including rights to:
- Request access to personal information about you;
- Request correction of inaccurate information;
- Request deletion of eligible personal information;
- Object to or restrict certain processing;
- Withdraw consent where processing is based on consent;
- Exercise other privacy rights provided by applicable law.
You can delete your account through the Letterfly app or use the instructions on our Account Deletion page.
Advertising consent can be reviewed through the privacy options provided in the app where that feature is available. System permissions such as notifications and tracking can also be changed through your device settings.
For other privacy requests, contact Letterfly using the contact information below.
9. International Processing
Letterfly and its service providers may process information in countries or regions other than the country where you live.
For example, certain safety-analysis data submitted to Google Vertex AI (Gemini) may be processed using Google Cloud infrastructure located in the United States. Other providers may process information in locations used to provide their respective services.
Where international transfer requirements apply, Letterfly and its providers will use appropriate contractual, technical, organizational, or legal safeguards required by applicable law.
10. Security
Letterfly uses reasonable technical and organizational safeguards designed to protect information from unauthorized access, alteration, disclosure, or destruction.
These measures may include authentication, access controls, server-side validation, restricted administrative access, and security monitoring.
No internet service or electronic storage method can guarantee absolute security. Users should also protect access to their Google or Apple account and to the devices on which Letterfly is used.
11. Protection of Minors
Letterfly is intended only for adults aged 18 or older. Users under 18 may not create an account, access, or use Letterfly.
Date-of-birth information and related eligibility information are used to help enforce this restriction.
If Letterfly becomes aware that a person under 18 has created or used an account in violation of the service requirements, Letterfly may restrict the account and take appropriate steps to delete the associated information in accordance with applicable law and safety obligations.
For additional information, see our Child Safety Policy.
12. Changes to This Privacy Policy
Letterfly may update this Privacy Policy when its services, data practices, service providers, or legal requirements change.
Material changes will be communicated through an appropriate method, such as an in-app notice, updated consent request, or updated effective date.
13. Privacy and Support Contact
For privacy questions, requests concerning personal information, or other support inquiries, contact Letterfly at:
You can also submit a support request through the Letterfly app or visit our Support page.