Terms of Use — Whose Receipt?

Last updated: 9 November 2026

1. Agreement and acceptance

These terms are an agreement between you and Seyfi Can Zeyrek (trading as Morrowline Apps) ("we"). They cover the Whose Receipt? app, its home-screen widget, its reminders, its paid products and related web pages. The privacy policy also applies.

The first screen of the App shows a line directly under its button that links to these terms and the privacy policy. You agree to these terms when you continue past that screen, by tapping Start my first case or I've played before.

If you do not agree, do not continue, and stop using the App. You cannot reach the game without continuing past that screen. You can remove the App at any time.

2. Definitions

App means the Whose Receipt? app and its widget.
Service means the App together with the servers and content we provide for it.
Store means the Apple App Store or Google Play, whichever you got the App from.
Pro means the subscription or lifetime purchase described in section 10.
Paid Products means Pro, Case File packs, campaigns, tip-off packs, the Season Pass and cosmetics.
Wallet means your balance of tip-offs and Merit on our servers.
Content means the cases, receipts, Field Notes, artwork and other material we provide.

3. Eligibility and age

You must be at least 13 years old to use the App. If you are under the age of majority where you live, you need the permission of a parent or guardian, including for purchases. Any higher minimum age for online services where you live still applies. The App is not directed to children.

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. There is no registration, password or sign-in with another service.

Your progress and Wallet belong to that anonymous account. We cannot link it to you personally, so if you uninstall the App, change device or lose access to the account, we may be unable to give you back your progress or Wallet. That includes tip-offs you bought. Keep this in mind before you buy tip-offs or remove the App. Other Paid Products can be restored as section 10 explains.

Your detective alias is stored on our servers so the App can show it to you. Only you see it. A word filter on our servers refuses some words when you set or change an alias; if it refuses the alias you chose when you first set up the App, you get a generated alias, which you can change later. You keep any rights you have in your alias, and you let us store and display it to you only to run the Service.

You can delete your data in Settings > Delete my data, as described in the privacy policy. You are responsible for what happens on your device.

5. License to use the app

We give you a personal, non-exclusive, non-transferable, revocable license to use the App on devices you own or control, for private non-commercial use, under these terms and the Store's rules. You must not copy, modify, sell or reverse engineer the App except where the law allows it, or work around its technical limits. We reserve all rights we do not expressly grant.

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:

Acknowledgement. These terms are between you and Seyfi Can Zeyrek (trading as Morrowline Apps) only, not with Apple Inc. ("Apple"). We, and not Apple, are solely responsible for Whose Receipt? (the "Licensed Application") and its content. These terms do not override Apple's Media Services Terms and Conditions.
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).
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.
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.
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.
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.
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.
Developer contact. Questions, complaints or claims about the Licensed Application can be sent to Seyfi Can Zeyrek (trading as Morrowline Apps), Esenyali Mahallesi 52/75 Sk. Izmir/Türkiye, e-mail zeyrekseyfican@gmail.com, telephone +90 555 027 76 81.
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).
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

The App asks for a permission only for the feature that needs it. You may refuse or revoke a permission in your device settings. Reminders stop working without the notification permission, and the game keeps working. You get no reward for granting a permission and no core feature depends on it. The privacy policy gives the details.

8. The service and its limits

Whose Receipt? is a daily deduction game. You read a fictional receipt, accuse its owner from a lineup of suspects, and learn from a debrief. The daily case is free to play and can be solved without buying anything. Receipts, people and stores in the cases are fictional; Field Notes summarise published research for learning and entertainment and are not professional advice. Field Notes name their sources; research findings describe groups of shoppers and do not predict what any one person buys.

What is free. The daily case, the First Week campaign, and the daily cases of the last three days in the archive are free. The first two cases of every paid Case File pack and campaign are free to play. The rest of a pack or campaign, the older archive and the other Pro benefits need Pro or the matching Paid Product. We show what a purchase unlocks before you buy.

Decode. Decode removes the marker from the next hidden line of a receipt. Without Pro, each Decode uses one tip-off; with Pro, Decode does not use tip-offs. A case solved with a Decode or tip-off can reach grade A at most.

The board. Other players cannot see your alias or your results: the board compares you with simulated rivals generated on your device. Their names and scores are invented and do not belong to real people.

No user content. The app has no chat, no messages and no way to publish content that other people can see. Sharing a result opens your device's share sheet; what you send and to whom is your choice and happens outside the App.

Features, Content and limits can change as we improve the Service. Some features are free and some need a Paid Product.

The daily case and the season dates follow the date on your device. Scores, ranks, streaks and statistics are calculated by the App and our servers. They can contain errors, and they have no value outside the game.

Home-screen widgets can show your streak and whether today's case is closed to anyone who can see your screen. Reminders can show on your lock screen too.

The Service depends on your device, your operating system, your connection and services run by others. We do not promise uninterrupted or error-free operation, and Store billing can be delayed. We do not promise any particular outcome from using the App.

9. Acceptable use

You must not:

use the App unlawfully, or use it to harass, threaten or impersonate anyone;
choose an offensive alias or try to get around the word filter;
change your device date, tamper with the App or its requests, or otherwise try to obtain tip-offs, Merit, Paid Products or results you did not earn or buy;
bypass limits, the paywall or App Check;
scrape the Service, use automated access, or spread malware;
resell the App, your Wallet or anything in it;
use the App in breach of export or sanctions law.

Prohibited use is abuse of the Service. We may warn you, replace an alias, limit features, correct your Wallet or results, or suspend access. To tell us about a problem, write to zeyrekseyfican@gmail.com or use Settings > Support.

10. Purchases and subscriptions

General

In-app purchases are currently offered only in the Android app, through Google Play. In the iOS app the shop and the Pro plans show as unavailable, and everything else in these terms about the game still applies there.

Pro is sold as monthly and annual subscriptions and as a one-time lifetime purchase. Case File packs, campaigns, tip-off packs and the Season Pass are sold separately through the Store, and so are cosmetics when the shop offers them for sale. Prices come from the Store and are shown in the App and in the Store before you buy, in your local currency where the Store offers it. Taxes may apply. Google Play processes payment; we do not receive your card details. RevenueCat manages purchase records for us, as the privacy policy explains.

Pro

Pro unlocks all Case File packs and campaigns, the full archive, Decode without tip-offs, one free tip-off a week, up to 3 Alibis with streak repair, Pro stats and paper themes. Pro does not include the Season Pass or cosmetics sold separately.

If you do not open the App in a week, that week's free tip-off is added the next time you open it while you have Pro, up to the previous 12 weeks. Older weeks are not added, and neither are weeks before you first had Pro. The App keeps track of missed weeks on your device, so weeks missed before you reinstall the App, move to a new device or delete your data are not added.

Automatic renewal

Subscriptions renew automatically until you cancel in your App Store or Google Play account settings. Each renewal is for the same period and at the price shown in the Store, unless the Store tells you of a change first. Payment is charged to your Store account at confirmation of purchase. The plans have no free introductory period.

Google Play. Your subscription renews automatically unless you cancel before the renewal date. Google Play charges the renewal on the renewal date.

Cancel any time in Google Play (Payments & subscriptions > Subscriptions); Settings > Manage subscription in the App takes you there. Cancelling in the App itself or by writing to us is not possible, because Google Play holds the subscription. Deleting the App or your data does not cancel a subscription. After cancelling you keep Pro until the end of the paid period. If a renewal payment fails, Pro can stay active during a Store grace period and ends if the Store puts the subscription on hold or it lapses.

If the price of a subscription changes, the Store tells you before the change applies, and you can cancel before it takes effect.

Tip-offs

Tip-offs you buy are consumed when you use them and do not expire. Our server adds them to your Wallet once Google Play confirms the payment, which can take a moment. They are not returned by Restore purchases, because the Store keeps no record to restore. A tip-off pays for one Decode. Your balance is linked to your anonymous account, as section 4 explains, and deleting your data removes it.

Season Pass

The Season Pass is a separate purchase for one season and is not part of Pro. It gives that season's paid track: its extra cases and paid-track cosmetics. Pass holders receive every paid-track cosmetic when the season ends, whatever their level, and the Pass's cases stay unlocked for your Store account after the season ends.

The Season Pass is on sale in the App only while its season is running. After a season closes, Pass holders see it in a closed view in the App, with its cases openable, and people without the Pass see nothing to buy for it. The end date and any countdown in the App show the real end date of that season. Levels come from Merit earned by playing, and Merit cannot be bought.

Case File packs, campaigns and cosmetics

Lifetime Pro, the Season Pass, campaign packs and cosmetics are one-time purchases and do not renew. Case File packs are one-time purchases too. A Case File pack or campaign unlocks all its cases for your Store account and stays yours if Pro ends. Cosmetics change how the App looks and give no advantage in the game; some can also be earned by playing. When the cosmetics bundle is on sale, it includes every cosmetic in the shop.

Restoring purchases

Use Restore purchases in the App with the same Store account to get Pro, Case File packs, campaigns, Season Passes and cosmetics back on a new device or after deleting your data. When you restore purchases on another account of yours, they move to that account, and the account they came from no longer has them. The App shows Pro at once; Pro extras that our servers grant, such as the weekly tip-off and streak repair, follow once RevenueCat reports the restore to our server. If they do not appear, write to zeyrekseyfican@gmail.com and we will set this right.

Free Wallet items

The App gives you tip-offs and Merit that you earn, for example as a welcome gift, for missions, achievements and season levels. Tip-offs and Merit have no cash value and cannot be sold, transferred or exchanged for money. We set how they are earned, and we may change this for the future. We may correct a balance that is wrong because of an error or a breach of section 9.

Deleting your data

Deleting your data removes your wallet and its ledger from our servers, including any tip-offs and Merit you hold. We cannot give them back after that. This has no effect on what the Store restores.

Refunds

Google Play handles payments and refunds under its own rules, and you can ask Google Play for a refund there. You can also write to us at zeyrekseyfican@gmail.com: Google Play lets us refund an order, and we do so where the law gives you a refund and otherwise decide case by case. If a tip-off purchase is refunded, we remove the tip-offs it added from your Wallet; tip-offs you have already used stay used. If the refund is reversed, they are added back. This does not affect rights you have by law.

11. Third-party services

The Stores, your operating system, our hosting provider, RevenueCat and links or share targets you open are run by others. Their terms apply and we are not responsible for their content or availability. Sources cited in Field Notes belong to their authors. Open-source components in the App are used under their own licences.

12. Intellectual property

We and our licensors own the App, the Content, the design, the Tab mascot and other characters, and all related rights and trademarks. These terms give you no right to use our marks. If you send us feedback, we may use it without owing you anything. Real-world facts in Field Notes remain free for anyone to use; our text and artwork do not. To complain about copyright, write to zeyrekseyfican@gmail.com.

13. Privacy

The privacy policy explains how we handle personal data and applies to your use of the App: privacy policy. If you are in Türkiye, the Turkish KVKK information notice also applies.

14. 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.

EU and UK. If you buy a Paid Product 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. To withdraw, ask Google Play for a refund under its refund policy or write to us at zeyrekseyfican@gmail.com within the 14 days; we can refund a Google Play order. 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 Directives 2019/770 and 2011/83 or the UK Consumer Rights Act 2015.

Türkiye. Your rights under Law no. 6502 on Consumer Protection and its regulations, including rights relating to distance contracts, subscriptions and unfair terms, remain in force. You can end a subscription at any time without penalty in Google Play > Payments & subscriptions > Subscriptions.

15. 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.

16. 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 the App and Paid Products 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 limit does not affect Apple's refund route or the product claims clause in section 6.

17. Termination

You can stop using the App at any time and delete your data in Settings > Delete my data. Deleting the App does not delete your data or cancel a subscription.

We may suspend or terminate 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, and we do not take back what the Store restores unless the law or the Store requires it.

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

18. 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 and any dispute arising out of or relating to them or the App are governed by the laws of the Republic of Türkiye, without regard to conflict-of-law rules that would require the application of another jurisdiction's laws. If you are a consumer, the mandatory consumer protection laws of your country of residence remain in effect and are not displaced by this choice of law to the extent those laws cannot be waived by agreement (including, where applicable, Law No. 6502 on Consumer Protection and related rules in Türkiye, and equivalent EU/EEA and UK consumer protections).

Courts. The courts of the Republic 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. Small-claims procedures where you live remain available to you. In Türkiye you may also apply to consumer courts and consumer arbitration committees.

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

19. Changes to these terms

We may make changes to these terms. We give notice in the App and update the date above. Material changes take effect after notice, at least 30 days where we can. If you continue to use the App after that date you accept the new terms, and if you disagree you may stop using it. Where the law requires your consent, we ask for it. A change does not take away what you already bought.

20. General

If a part of these terms is unenforceable, the rest stays in force (severability). If we do not enforce a right, that is not a waiver. These terms and the documents they refer to are the entire agreement between us about the App. We may assign these terms on a business transfer, and your rights stay the same. We send notices in the App. Where we offer these terms in several languages, the version in your language applies to the extent the law requires. Nobody other than you, us and Apple, as section 6 says, has rights under these terms.

21. Contact

Contact Seyfi Can Zeyrek (trading as Morrowline Apps), an individual developer (Morrowline Apps is a brand name, not a registered company), Esenyali Mahallesi 52/75 Sk. Izmir/Türkiye, email zeyrekseyfican@gmail.com, telephone +90 555 027 76 81.

Trader identification for EU consumers: Seyfi Can Zeyrek (trading as Morrowline Apps), Esenyali Mahallesi 52/75 Sk. Izmir/Türkiye, zeyrekseyfican@gmail.com, +90 555 027 76 81.

Send complaints to the same email address. You can also reach us through Settings > Support, which opens our support page.