Terms of Use

Last updated: 19 October 2026

1. Agreement and acceptance

These terms (version 2026-10-19) are an agreement between you and Seyfi Can Zeyrek, an individual developer in Türkiye who publishes HeartPin under the name Morrowline ("we", "us"). They cover the HeartPin app for iPhone and Android, its home-screen and lock-screen widgets, its notifications, Couple Pro and the invite web page we host.

When you tap Agree and continue on the welcome screen, which links to these terms and to the privacy policy, you accept these terms; we record which version of the terms you accepted and when. The privacy policy explains how we handle personal data; it is information, not a contract you agree to. If you do not agree to these terms, do not use HeartPin. If you accepted an earlier version, section 21 explains how changes reach you.

2. Definitions

• "App" means the HeartPin app and its widgets.
• "Service" means the App, the servers behind it, its notifications and the invite page we provide.
• "Partner" means the one other person you pair with in the App.
• "Shared space" means what the two of you keep together once paired: notes, pings, drawings, photos, widgets, places, games, answers, the pet and the streak.
• "Content" means anything you add to the App.
• "Couple Pro" means the paid subscription that removes the limit on creating new things.
• "Free moments" means the creating actions each person can use without Couple Pro.
• "Stores" means the Apple App Store and Google Play.

3. Eligibility and age

HeartPin is for adults. You must be at least 18 years old to use it, and old enough under the law of your country to enter this agreement. The App is not directed to children. If we learn that someone under 18 uses HeartPin, we delete the account.

4. Your account

The app creates an anonymous account identifier when you first open it; it is not tied to your name unless you add one. You do not sign in with an email address or a password, and the App offers no way to move the account to another phone by signing in.

The identifier is kept on your phone and on our servers. On iPhone it can survive a reinstall in the system keychain, and on Android the system backup can restore it; if neither applies, losing the phone means losing access to the account. You are responsible for what happens on your device, so keep it locked. One account belongs to one person and must not be shared.

You can delete your account at any time in the Settings tab with Delete account, as the privacy policy describes.

5. License to use the app

We give you a personal, non-exclusive, non-transferable and revocable licence to use the App on devices you own or control, for private, non-commercial use, under these terms and the rules of the Store you downloaded it from. You must not copy, modify, sell or rent the App, reverse engineer it except where the law allows, or circumvent its technical limits. All rights not granted stay with us and our licensors.

If you downloaded the app from Google Play, Google is not a party to these terms. Purchases are processed under Google Play's terms of service. These terms do not give you rights against Google.

6. Apple App Store terms

If you downloaded the app from the Apple App Store, the following also applies:

1. Acknowledgement. These terms are between you and Seyfi Can Zeyrek only, not with Apple Inc. ("Apple"). We, and not Apple, are solely responsible for HeartPin (the "Licensed Application") and its content. These terms do not override Apple's Media Services Terms and Conditions.
2. Scope of licence. The licence we grant you is non-transferable and limited to Apple-branded products that you own or control, and as permitted by the Usage Rules set out in Apple's Media Services Terms and Conditions (including use through Family Sharing or volume purchasing where Apple allows it).
3. Maintenance and support. We, and not Apple, are solely responsible for maintenance and support of the Licensed Application, as set out in these terms or as required by law. Apple has no obligation to provide maintenance or support.
4. Warranty. If the Licensed Application fails to conform to an applicable warranty, you may notify Apple, and Apple will refund the purchase price for the Licensed Application to you (if any). To the maximum extent permitted by law, Apple has no other warranty obligation for the Licensed Application. Other claims, losses, liabilities, damages, costs or expenses caused by a failure to conform to a warranty are our responsibility.
5. Product claims. We, and not Apple, are responsible for addressing claims by you or a third party relating to the Licensed Application or your possession and use of it, including product liability claims, claims that it fails to meet a legal or regulatory requirement, and claims under consumer protection, privacy or similar laws. Nothing in these terms limits our liability beyond what the law allows.
6. Intellectual property. If a third party claims that the Licensed Application or your possession and use of it infringes that party's intellectual property rights, we, and not Apple, are solely responsible for the investigation, defence, settlement and discharge of the claim.
7. Legal compliance. You confirm that you are not located in a country that is subject to a US Government embargo or designated by the US Government as a "terrorist supporting" country, and that you are not on any US Government list of prohibited or restricted parties.
8. Developer contact. Questions, complaints or claims about the Licensed Application can be sent to Seyfi Can Zeyrek, Esenyalı Mahallesi, İzmir, Türkiye, email zeyrekseyfican@gmail.com.
9. Third-party terms. You must comply with the third-party terms that apply when you use the Licensed Application (for example, the terms of your mobile data provider).
10. Third-party beneficiaries. Apple and its subsidiaries are third-party beneficiaries of these terms. Once you accept them, Apple has the right (and is considered to have accepted the right) to enforce these terms against you as a third-party beneficiary.

7. Device permissions

HeartPin asks for permissions only for the features that need them: location while the app is open, notifications, the camera for a profile photo and the photos you choose. You may refuse or revoke any permission in your phone's settings at any time. Some features stop working without the matching permission; the rest of the App does not depend on them. The privacy policy explains each permission.

8. The service and its limits

HeartPin helps two partners stay close with a shared space, widgets on their home screens and lock screens, notes, miss-you pings, drawings, places, games, a daily question, a shared pet and a streak. Features, content and limits can change as we improve the Service.

Some things are free and some need Couple Pro. Reading and viewing stay available; creating new notes, nudges, doodles, answers, pet care, games, places and widgets needs Couple Pro once your free moments are used up. Free moments count only while you are paired, and we show what a purchase unlocks before you buy.

Distances, counts, streaks and other figures in the App are calculated from the data you and your Partner provide and can be wrong or out of date. Distances are straight-line and use positions rounded to about 1 km. HeartPin is not a safety, emergency or tracking service; do not rely on it to know where someone is.

The Service depends on your device, your operating system, your connection and services run by others, such as the Stores and the push services of Apple and Google. Notifications, widget refreshes and sealed notes can arrive late or not at all. We do not promise uninterrupted or error-free operation, and we do not promise any outcome for your relationship.

Home-screen and lock-screen widgets can show your notes, drawings, photos, names, countdowns and distance to anyone who can see your screen. HeartPin does not show ads.

9. Linked accounts and sharing

You can pair with one Partner. Pairing needs their action: they enter your invite code or open your invite link, after seeing who invited them. Either of you can pause HeartPin, which switches nudges off, and either of you can resume it.

Anything you add to a shared space (notes, pings, drawings, photos, widgets, places, answers, your status, when you were last active and the distance between you) is visible to the person you are paired with.

If you unpair, your stored location and game rounds are cleared, and the notes, drawings, places, pet and photos you added stay with your partner. If you delete your account, everything you added to the shared space is removed and your Partner keeps their own content, the pet and the streak, as the privacy policy describes.

Only share another person's information, photos or location with their agreement. Do not use HeartPin to watch, track or pressure someone who has not agreed, and do not pair a phone you do not control. Location is shared with your Partner only if you allow location access on your own phone. To stop sharing your location, turn off Share my distance in the app’s settings or turn off location access for the app in your phone’s settings; the app then deletes your stored rounded position and your partner no longer sees the distance.

There is no report or block button in the app: unpairing ends all contact with your partner, and you can report content or behaviour through Contact us in Settings or by email. If you feel unsafe because of how HeartPin is used, write to zeyrekseyfican@gmail.com; we can remove a pairing, remove content, limit features or suspend an account.

10. Your content

You keep ownership of your Content. To run the Service you give us a worldwide, non-exclusive, royalty-free licence to host, store, copy, resize, display and transmit your Content to your Partner and to our service providers, for the time you keep it in the App, and only to operate and secure the Service. The licence ends when the Content is deleted, except for copies already delivered to your Partner and backups that age out.

You confirm that you have the rights to your Content and the consent of the people shown in it. You can delete your own notes, drawings and places in the App; what happens to copies is described in the privacy policy.

Zero tolerance for illegal content. We do not tolerate illegal content in HeartPin, including sexual content involving minors and intimate images of a person shared without that person's consent. When we receive a notice about such content, we remove it, may suspend the account involved and, where the law requires, report it to the authorities.

How reports are handled. You can report content or behaviour that is illegal or breaks these terms through Contact us in Settings or at zeyrekseyfican@gmail.com; include your support code and describe the content. A person reviews every report; we do not use automated moderation. Possible measures are removing content, removing a pairing, limiting features and suspending or deleting an account. We tell the reporter and, where the law requires and it is safe, the person affected about our decision and the reasons. If you disagree with a decision, write to us and ask for a review; this does not affect your right to go to court.

11. Acceptable use

You must not:

• use HeartPin for anything unlawful, or to harass, threaten, stalk, blackmail or impersonate anyone;
• share another person's private data, photos or location without their consent, or monitor someone who has not agreed;
• upload sexual content involving minors, intimate images of anyone without their consent, malware, or content that infringes the rights of others;
• bypass the free-moment limits or the paywall, resell access, scrape the Service or access it by automated means, or abuse invites or notifications to bother others;
• use the invite codes reserved for app store review, or try to reach accounts that are not yours;
• break export control or sanctions law.

If you break these terms we may warn you, remove content, limit features or suspend or end access, as section 19 describes.

12. Purchases and subscriptions

Couple Pro is sold as weekly and annual subscriptions through the Apple App Store or Google Play. The price and billing period are shown in the Store and on the paywall before you buy, and taxes may apply. Payment is charged to your Store account when you confirm the purchase and again at each renewal. Couple Pro has no trial period and no introductory offer.

Subscriptions renew automatically until you cancel in your App Store or Google Play account settings. Cancel in your Apple account settings (App Store > Subscriptions) at least 24 hours before the period ends, or in Google Play (Payments & subscriptions > Subscriptions) before the renewal date. After cancelling you keep Couple Pro until the end of the paid period. Deleting your account does not cancel a subscription; cancel it in your App Store or Google Play account settings. Deleting the app does not cancel it either.

Couple Pro comes from a store subscription held by either of you: while you are paired one subscription covers both of you. Whether Couple Pro is active is decided on our server from the Store's records. If you unpair, the subscription stays with the person who holds it.

Without Couple Pro, each person gets a limited number of free moments; reading and viewing stay free. When your free moments are used up, you can send your Partner a notification asking about Couple Pro.

Apple and Google handle payments and refunds under their own rules. We cannot refund Store purchases ourselves; this does not affect rights you have by law. Use Restore in the App with the same Store account to get Couple Pro back on a new device. If the price of a subscription changes, the Store tells you before the change applies and you can cancel before it takes effect. We do not store your card details; the Store processes the payment.

13. Third-party services

HeartPin depends on third-party services: the Stores, the push services of Apple and Google, Google's Firebase, RevenueCat and, for Our places, the Photon search service run by komoot and the OpenFreeMap map service. The App may also open links, such as the Store subscription pages, your mail app or your share sheet. These services are not ours; their own terms apply, and we are not responsible for their content, availability or practices. Open-source components are used under their licences.

14. Intellectual property

We and our licensors own the App, its design, text, illustrations, the pet and its artwork, our names and logos, and all related intellectual property rights. You get no right to use our trademarks. If you send us feedback, we may use it without owing you anything. If you believe content in HeartPin infringes your rights, write to zeyrekseyfican@gmail.com.

15. Privacy

The privacy policy at https://heartpin.morrowline.app/en/privacy/ explains how we handle personal data and applies to your use of the App. Users in Türkiye can also read the separate information notice under the Turkish data protection law (KVKK) at https://heartpin.morrowline.app/en/kvkk/.

16. Your rights as a consumer

Nothing in these terms limits rights you have as a consumer under the law of the country where you live and that cannot be waived by agreement.

If you buy Couple Pro as a consumer in the EU or UK, you have a 14-day right to withdraw from a distance contract. For digital content supplied immediately, you lose this right if you expressly asked for immediate supply and acknowledged that you lose it. For digital services, if you asked us to start during the withdrawal period you pay a proportionate amount for the service used. In the Store's purchase flow you can request a refund; the Store's withdrawal or refund function is available during the 14 days.

Digital content and services must be as described, of satisfactory quality and fit for purpose. If they are not, you may be entitled to repair, a price reduction or termination under EU Directive 2019/770 or the UK Consumer Rights Act 2015.

In Türkiye, your rights under Law no. 6502 on Consumer Protection and its regulations, including rights relating to distance contracts and unfair terms, remain in force.

17. Disclaimer of warranties

The app and the service are provided "as is" and "as available". We do not promise that they will be uninterrupted, error-free or suitable for a particular purpose. Rights that the law gives you and that cannot be excluded remain. For iOS, Apple's refund route in section 6 applies.

18. Limitation of liability

We are not liable for indirect or consequential loss, lost profits, lost data or loss of goodwill, to the extent the law allows. Our total liability to you for all claims about the App is limited to the amount you paid for Couple Pro in the 12 months before the event, or 50 euros if you paid nothing, to the extent the law allows.

Nothing limits liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, for intent or gross negligence, or for anything that cannot be limited by law, including your statutory consumer rights. This section does not limit Apple's refund route in section 6 or our responsibilities under clauses 4 and 5 of the Apple terms.

19. Termination

You can stop using HeartPin at any time and delete your account in the Settings tab with Delete account. Deleting the app does not delete your account or cancel a subscription.

We may suspend or end your access if you seriously or repeatedly break these terms, if the law requires it, or to protect others. We tell you in advance where practical; for illegal content we can act at once.

When your access ends your licence ends. What happens to your data is described in the privacy policy, and Couple Pro is handled through the Store. Sections about intellectual property, liability, disputes and anything meant to continue stay in force.

20. Governing law and disputes

Talk to us first. If you have a complaint, write to zeyrekseyfican@gmail.com. We will try to resolve it within 30 days before either of us starts formal proceedings. This does not affect your right to go to court or to a consumer authority at any time.

Governing law. These terms are governed by the laws of Türkiye, without regard to conflict-of-law rules. If you are a consumer, mandatory consumer protection rules of the country where you live continue to apply to you.

Courts. The courts of Türkiye have non-exclusive jurisdiction. If you are a consumer, you may also bring a claim in the courts of the place where you live, and we can only bring a claim against you in the courts of that place, to the extent the law of your country says so. In Türkiye, the consumer courts and consumer arbitration committees of your place of residence remain available to you under Law no. 6502. Small-claims procedures where you live remain available to you.

There is no arbitration clause and no class-action waiver in these terms.

21. Changes to these terms

We may change these terms, for example when we add features or the law changes. We tell you in the App and update the date and version above. Material changes take effect after notice, at least 30 days where we can give it. If you keep using HeartPin after the effective date, you accept the changes; if you disagree, you can stop using HeartPin and delete your account. Where the law requires your consent, we ask for it.

22. General

If a part of these terms is unenforceable, the rest stays in force. If we do not enforce a right, we do not waive it. These terms are the entire agreement between us about HeartPin. We may assign these terms to a successor that takes over HeartPin. We may give notices in the App or by email if you have written to us. You may not assign these terms without our consent. Nobody else has rights under these terms, except Apple as stated in section 6.

23. Contact

Seyfi Can Zeyrek (individual developer; publisher name: Morrowline), Esenyalı Mahallesi, İzmir, Türkiye. Email: zeyrekseyfican@gmail.com. We reply as soon as we can.

Trader identification for EU consumers: Seyfi Can Zeyrek, Esenyalı Mahallesi, İzmir, Türkiye, zeyrekseyfican@gmail.com.