Last Updated: October 13, 2026
Thank you for choosing Lune Line ("Lune Line," "we," "us," or "our"), owned and operated by Sexology Systems LLC. This Privacy Policy explains how we collect, use, disclose, store, and protect personal information when you use the Lune Line mobile application (the "App"), our related websites (including luneline.com and shop.luneline.com), and related services (collectively, the "Services").
Lune Line is a private cycle-tracking and communication space that may allow you to log cycle information, receive estimates and reminders, share your calendar with people you choose, request access to calendars shared by other users, communicate with connected users through chat, and save personal notes in the "My Notes" channel.
Lune Line is not a medical service and does not provide medical advice, diagnosis, or treatment. Cycle predictions and related information are estimates only and should not be used for contraception, pregnancy prevention, or medical decision-making.
By creating an account or using the Services, you acknowledge this Privacy Policy. Where applicable law requires consent for particular processing, we will request that consent separately.
When you create or maintain a Lune Line account, we may collect information such as your email address, display name, account identifier, authentication information, and information provided by a third-party sign-in provider if you choose to sign in through a service such as Apple, Google, or Facebook. We do not receive your password from those third-party sign-in providers.
You may choose to enter menstrual cycle information, period start and end dates, cycle history, calendar entries, notes, and other information related to your cycle. This information may constitute sensitive personal information or consumer health data under applicable law. We use it to provide cycle tracking, calendar views, estimates, reminders, and sharing features that you choose to use.
If you use calendar-sharing features, we process information needed to create and manage connections between users, including connection or invitation codes, requests for access, approvals or declines, connection status, and sharing permissions. A user may provide another person with a code or other invitation mechanism so that person can request access. Calendar access is not granted until the calendar owner approves the request or otherwise enables sharing.
You can manage connections in the App. Depending on the available controls, you may stop sharing your calendar, stop viewing another user's calendar, or remove a connection. Removing access is intended to stop future in-App access to the shared calendar. It cannot erase information that another person already viewed, copied, photographed, downloaded, saved, forwarded, or otherwise retained outside Lune Line.
Lune Line may allow connected users to exchange messages and content, including text, emojis, images, files, and audio messages. We process message content, sender and recipient identifiers, timestamps, delivery and channel information, attachments, and related metadata as necessary to provide these features.
The "My Notes" feature is intended as a private personal channel visible to the account holder rather than to connected partners. Content saved in "My Notes" is still stored and technically processed through the systems used to provide the chat service. "Private" in this context means not intentionally shared with other Lune Line users through the feature; it does not mean that the content is stored only on your device or that no service provider can technically process it.
If you contact us for support or otherwise communicate with us, we may collect your contact information and the content of your communication, including attachments you choose to send.
If you visit or use shop.luneline.com, information related to browsing, purchases, shipping, customer support, and order fulfillment may be collected and processed by us and by our ecommerce and payment providers. We do not store full payment card numbers in our own systems.
We use Amplitude to understand how users move through onboarding and how selected App features are used. Analytics events may include information such as the type of action performed, screen or feature used, event time, app version, operating system, device information, language, country or approximate region derived from network information, and a pseudonymous device or user identifier.
We configure our Amplitude implementation so that personal cycle or health information is not sent to Amplitude. We do not intentionally send menstrual dates, cycle history, calendar contents, predictions, chat message content, "My Notes" content, images, files, audio messages, or other message attachments to Amplitude. We also do not use Amplitude to read or analyze the contents of your cycle records or private communications.
Because analytics services may process device identifiers, IP addresses, or other technical data, we do not describe all Amplitude data as strictly anonymous. Instead, we limit the data we send and use it for product analytics and service improvement. You can learn more about Amplitude's privacy practices at https://amplitude.com/privacy.
Our website at luneline.com uses one essential cookie and, only if you agree, Google Analytics. Analytics is off by default. On your first visit, a cookie banner lets you choose "Accept all" or "Only essential," and you can change your choice at any time in Cookie settings, which is linked at the bottom of every page. See Section 9.6 for all of your choices.
ll_consent remembers your cookie choice so we do not ask again on every page. It does not track you and is not shared.How we limit Google Analytics. We have turned off Google signals and advertising personalization, we do not link Google Analytics to advertising products, and we do not use it to build advertising profiles or to target ads. We do not send your name, email address, account information, cycle or calendar data, messages, or anything from the App to Google Analytics, and the luneline.com website does not ask for cycle data. According to Google, Google Analytics 4 does not log or store IP addresses; it uses them to derive approximate location. Google processes this information as our service provider under Google's data processing terms. Learn more in Google's Privacy Policy and Safeguarding your data.
| Cookie | Provider | Purpose | Type | Duration |
|---|---|---|---|---|
ll_consent | Lune Line | Remembers your cookie choice | Essential | 6 months |
_ga | Google Analytics | Distinguishes one browser from another | Analytics, only with consent | 13 months |
_ga_BQSY941B1E | Google Analytics | Keeps track of the current visit | Analytics, only with consent | 13 months |
Health-related browsing. Because Lune Line is a period-tracking app, the fact that you visited our website could, under some laws, be treated as health-related information or "consumer health data." This is one reason website analytics is opt-in, used only to improve the website, never sold, and never used for advertising. See Section 8 and our Consumer Health Data Privacy Policy.
Records of your cookie choices. When you make or change a cookie choice on luneline.com, we keep a record on our own server so we can show that we asked for, and respected, your choice. The record contains a random consent ID (shown to you in Cookie settings), your choice (analytics on or off), how you made it (banner or Cookie settings), whether your browser sent a Global Privacy Control signal, the version of our cookie notice and of this Privacy Policy, the date and time, the page, your browser's user-agent string (browser and device type), and a shortened IP address with the last part removed. These records are not public and are not shared with Google or other third parties except where required by law. We keep them for 24 months, after which they are deleted automatically. You can ask us to find or delete the records for your consent ID by contacting support@luneline.com.
Online store. Our online store at shop.luneline.com runs on Shopify, which manages its own cookies. See Sections 1.6 and 5.3.
We may create aggregated or de-identified information that does not reasonably identify an individual and use it for analytics, security, service measurement, and product improvement. Where required by law, we maintain safeguards intended to prevent re-identification.
We use personal information to:
If you are located in the EEA or UK, our legal bases may include performance of a contract, your consent (including where required for processing health-related or other sensitive information), our legitimate interests in operating and protecting the Services, and compliance with legal obligations. Where we rely on consent, you may withdraw it as permitted by law, but withdrawal does not affect prior lawful processing.
On luneline.com, we rely on your consent for Google Analytics cookies. We rely on our legal obligations and legitimate interests for the essential cookie that stores your choice and for the records of your cookie choices described in Section 1.9.
Calendar sharing is voluntary. You control whether to provide another person with an invitation or connection code, whether to approve an incoming request, and whether to keep a connection active. A person who has a valid code may be able to send you an access request, but the code itself does not automatically authorize that person to view your calendar.
When you approve access or otherwise enable sharing, the connected user may see the calendar or cycle information made available by the feature. You should share only with people you trust. A recipient may be able to remember, photograph, screenshot, copy, or otherwise retain information they can see, even if the App does not provide a dedicated export function.
Stopping sharing or deleting a connection prevents or limits future access through Lune Line according to the controls shown in the App. It cannot guarantee deletion of information already retained by the recipient, stored in device backups, captured in screenshots, included in prior notifications, or otherwise copied outside our control.
Lune Line uses Stream.io, Inc. (commonly known as GetStream or Stream) as a third-party service provider to power chat and related communication functionality. Stream may process and store chat-related information on our behalf, including user identifiers used for chat, channel membership, messages, timestamps, reactions or emojis, images, files, audio messages, and other attachments or metadata required to deliver the service.
Stream acts as a service provider or processor for data that Lune Line sends to the Stream service. Stream may use its own infrastructure and subprocessors to provide hosting, delivery, security, and related technical services. You can review Stream's privacy information at https://getstream.io/legal/privacy/.
When you send a message or attachment to another user, that content is intentionally disclosed to the recipient. The recipient may save, forward, copy, download, screenshot, record, or otherwise use the information after receiving it. We cannot control or reverse actions taken by another person outside the Services.
"My Notes" is designed for personal notes and is not intentionally shared with connected partners. However, content in "My Notes" may still be stored or processed by Stream and other infrastructure providers used to operate the feature. Do not use "My Notes" as your only copy of information that you cannot afford to lose.
We disclose calendar or cycle information to another Lune Line user when you authorize sharing with that user. We disclose messages and attachments to the users or channels to which you send them. We do not make your private calendar available to another user merely because that person knows you or has your email address.
We use service providers to operate the Services. Depending on the feature used, these providers may process personal information on our behalf for functions such as cloud hosting, databases, authentication, chat, file delivery, analytics, crash reporting, email, push notifications, ecommerce, payments, security, and customer support.
Key providers currently include:
We require service providers to process information for the services they provide to us and subject to applicable contractual and legal restrictions.
Our online store is powered by Shopify. Shopify and payment or fulfillment providers may process information needed to provide checkout, payment processing, fraud prevention, shipping, returns, and related services. Review Shopify's privacy information at https://www.shopify.com/legal/privacy.
We may disclose information when we reasonably believe disclosure is required by applicable law, regulation, subpoena, court order, or other valid legal process, or when reasonably necessary to protect the rights, safety, security, and integrity of users, Sexology Systems LLC, the Services, or others. Where permitted, we may challenge requests we believe are invalid or overly broad.
If Sexology Systems LLC is involved in a merger, acquisition, financing, reorganization, bankruptcy, sale of assets, or similar transaction, personal information may be disclosed or transferred as part of that transaction, subject to applicable law.
We do not sell menstrual-cycle entries, calendar health information, chat message content, "My Notes" content, images, files, or audio messages to data brokers or advertisers. We do not provide such content to Amplitude for behavioral advertising.
Website analytics data from luneline.com is not sold, is not shared for cross-context behavioral advertising, and is not used for targeted advertising.
We retain information for as long as reasonably necessary to provide the Services, maintain accounts, support security, comply with legal obligations, resolve disputes, and enforce agreements. Retention periods can vary by data type and service provider.
ll_consent cookie in your browser expires after 6 months, after which we ask again. Records of your cookie choices on our server are kept for 24 months and then deleted.Deletion from active systems may not immediately remove residual copies from encrypted backups or logs, which may remain for a limited period until overwritten or deleted in the ordinary course.
We use commercially reasonable administrative, technical, and organizational safeguards intended to protect personal information. However, no app, internet transmission, device, account, database, or third-party platform can be guaranteed completely secure.
Security risks include, among other things, compromised passwords or third-party login accounts, loss or theft of a device, malware, unauthorized device access, social engineering, vulnerabilities in our systems or those of service providers, malicious insiders, network attacks, and actions by people with whom you choose to share information.
Your optional Lune Line PIN is a device-level access control. It is not a substitute for securing your device and account credentials, and it does not prevent a recipient from retaining information you intentionally shared. If you log out, reinstall the App, reset the App, lose your device, lose access to your authentication method, or forget a locally stored PIN, you may lose access to locally stored or unsynced information.
If a security incident affects personal information, we may investigate, take protective measures, and provide notices to users, regulators, or others when required by applicable law.
Cycle and menstrual information may qualify as "consumer health data" or similarly protected sensitive information under laws in certain U.S. states, including Washington and Nevada. Where those laws apply, this section supplements the rest of this Privacy Policy.
We collect the health-related information you choose to enter in order to provide cycle tracking, predictions, reminders, calendar displays, and sharing that you direct. Sources are primarily you and, when you choose to view another person's shared calendar, the user who authorized that sharing. We disclose such information to service providers as necessary to operate the Services and to other users when you expressly direct or approve the sharing. We do not sell this consumer health data.
Depending on applicable law, you may have rights to access, confirm, correct, delete, or withdraw consent relating to consumer health data. You may exercise available rights through the App or by contacting support@luneline.com. We may need to verify your request.
Website visits. If you accept analytics cookies on luneline.com, information about your visit may be considered consumer health data in some states. We collect it only with your consent, use it only to understand and improve the website, disclose it only to Google as our service provider for that purpose, and never sell it or use it for advertising. You can withdraw your consent at any time in Cookie settings.
Consumer Health Data Privacy Policy. Our separate Consumer Health Data Privacy Policy describes the categories of consumer health data we collect, where it comes from, how we use and share it, and how to exercise your rights, as required by Washington's My Health My Data Act, Nevada law, and similar laws.
You may access or update certain account information in the App. You may request deletion of your account through available in-App controls or by contacting support@luneline.com. We may need to verify your identity before acting on certain requests.
Account deletion is intended to remove personal information from active Lune Line systems, subject to legal obligations, fraud/security records, backup cycles, and service-provider deletion processes. Information previously disclosed to another user may remain in that user's possession or records and cannot necessarily be recovered or deleted by us.
If you are in the EEA or UK, applicable law may provide rights of access, correction, deletion, restriction, portability, objection, and withdrawal of consent, as well as the right to complain to a data protection authority.
Depending on your state of residence, you may have rights to access, correct, delete, obtain a copy of, or limit certain uses of personal information, and to appeal certain decisions relating to a privacy request. Contact support@luneline.com to exercise applicable rights.
Depending on where you live, you may have additional privacy rights under applicable law. We will respond to valid requests as required by the law that applies to us and to your information.
If you are in Quebec, technologies on our website that could identify, locate, or profile you, such as Google Analytics, are turned off by default and are activated only if you choose to accept them.
Sexology Systems LLC operates in the United States, and our service providers may operate infrastructure in the United States and other countries. Your information may therefore be transferred to, stored in, or processed in jurisdictions that have different privacy laws from your place of residence. Where required, we use legally recognized transfer mechanisms and contractual protections.
If you accept analytics cookies, Google may process website analytics data in the United States and other countries where Google or its subprocessors operate. Where required, these transfers rely on legally recognized mechanisms, such as the EU-U.S. Data Privacy Framework (and its UK and Swiss extensions) or the standard contractual clauses in Google's data processing terms.
The Services are intended only for users who are at least 18 years old. We do not knowingly permit individuals under 18 to create Lune Line accounts. If you believe a person under 18 has provided personal information through the Services, contact us at support@luneline.com.
The Services may contain links to or integrations with third-party services that we do not own or control. Their own privacy policies govern information they collect for their independent purposes. This Privacy Policy describes Sexology Systems LLC's practices and our use of service providers on our behalf.
We may update this Privacy Policy as the Services, providers, or legal requirements change. If we make material changes, we may provide notice in the App, by email, or by another appropriate method. The "Last Updated" date identifies the current version. If we change the purposes of our website cookies or add new providers, we will ask for your consent again before using them.
Sexology Systems LLC
5900 Balcones Dr STE 100
Austin, TX 78731
Email: support@luneline.com