Terms of Use · Watsin

Last updated: 30 October 2026

These Terms of Use (“Terms”) are the agreement between you and Synion OÜ (“we”, “us”) for the Watsin app for iPhone (“Watsin”, “the app”) and the services behind it. Please read them before you create an account. By creating an account or using Watsin you agree to these Terms. If you do not agree, please do not use Watsin.

How we handle your personal data is explained separately in our Privacy Policy.

Important: Watsin’s product information is generated by AI and can be wrong. Product evaluations, scores, ingredient flags, ingredient explanations and chat answers are produced automatically from package labels, product databases and web searches. They can be incorrect, incomplete or out of date. They are not medical, dietary, nutritional or allergy advice. Always read the label on the package itself, especially if you or someone you buy for has an allergy or intolerance. See section 5.

At a glance

Watsin is for people aged 16 and over.
You sign in with a one-time code sent to your email address; there is no password.
Scanning products is free, and so is reading the labels of products that are not in our database (up to a daily limit). The AI features (product evaluations, ingredient flags, chat and Threads, and web search for unknown products) use credits, or need a Watsin Unlimited subscription.
Purchases and subscriptions are made and billed through Apple. Subscriptions renew automatically until you cancel them in your Apple Account settings. Refunds are handled by Apple.
Apple’s Licensed Application End User License Agreement also applies.
You can delete your account in the app at any time. Deleting your account does not cancel a subscription.
Estonian law applies. Your rights as a consumer under the law of the country you live in are not affected.

01Who we are

Watsin is provided by:

Synion OÜ Liiva 28, Salme alevik 93201 Estonia Estonian business register code: 14933333

Email: contact@watsin.app

02These Terms and Apple’s terms

2.1 Apple’s Standard EULA. Watsin is distributed through Apple’s App Store. Apple’s Licensed Application End User License Agreement (the “Standard EULA”) applies to your use of the app together with these Terms. The Standard EULA grants the basic licence to use the app; these Terms add the rules for the Watsin service, your account, credits and subscriptions. If the two conflict, these Terms apply between you and us to the extent the Standard EULA allows.

2.2 App Store purchases. Purchases you make in Watsin are also governed by Apple’s terms for the App Store (the Apple Media Services Terms and Conditions).

2.3 Privacy. Our Privacy Policy explains what personal data we process and why. It is not part of these Terms, but please read it.

03Who can use Watsin

You must be at least 16 years old to use Watsin. If you are under 18, please use Watsin only with the agreement of a parent or guardian, who should make or approve any purchase.
Watsin needs an iPhone with iOS 26 or later, an internet connection and, for scanning, access to the camera.
Watsin is for your personal, non-commercial use.

04Your account

4.1 Creating an account. You create an account with your name and email address, and optionally an invite or coupon code. Please give us accurate information. An account is for one person; do not share it, sell it or let others use it.

4.2 Signing in. Watsin has no passwords. Each time you sign in, we email you a one-time 6-digit code (and a button that signs you in on the device where you asked for it). The code works once and expires after 60 minutes. Anyone who can read your email can sign in to your Watsin account, so keep your mailbox secure. If you think someone else has used your account, tell us at contact@watsin.app.

4.3 Invitations. You can invite friends from the app. Only invite people you know and who would expect to hear from you. We send your friend one email with an invite code, in your app language and showing your display name. The code works once and expires after 7 days. When your friend creates an account with your code, you both receive bonus credits (the amount is shown in the app). To prevent misuse we limit how many invitations can be sent, and we may withhold or remove bonus credits obtained by inviting yourself, using addresses that are not real people, or otherwise abusing invitations.

4.4 Coupon codes. We or our partners may give out coupon codes that add credits to a new account at sign-up. Each code has its own conditions; for example, it may expire or be usable only a limited number of times.

4.5 Data on your device. Your saved products, chat history, Threads and profile fields are stored only on your iPhone, as the Privacy Policy explains. We do not keep a copy on our servers, so we cannot restore them if your device is lost or the app is deleted. Signing out keeps them on the device for when you sign in again.

4.6 Deleting your account. You can delete your account at any time in the app under Profile → Account → Delete account. This permanently deletes your account and the data the Privacy Policy lists (section 9 of the Privacy Policy), including your credits, and removes your Watsin data from the device. It cannot be undone, and unused credits cannot be restored or refunded. Deleting your account does not cancel a subscription you bought through Apple: cancel it first (see section 6.5).

05AI-generated information: please read

5.1 What is generated by AI. The following are produced automatically by AI models:

product evaluations and scores;
ingredient flags (mild or serious) and ingredient explanations;
chat replies and Thread answers;
product names translated into your app language;
product details found by web search or read from the photos of labels you take.

5.2 Where it comes from, and why it can be wrong. This information is based on Watsin’s product database, information found on the web, and photos of package labels, processed by AI models from third-party providers (listed in our Privacy Policy). Product databases and websites can be out of date or describe a different version of a product; recipes change; packaging differs between countries; photos can be misread; and AI models can make mistakes, leave things out, or state things that are not true with confidence. We cannot guarantee that any of this information is correct, complete or current.

5.3 Not advice. Watsin gives general information about packaged food. It is not medical, dietary, nutritional or allergy advice, and it does not replace a doctor, dietitian or other qualified professional. A score is an automated, general assessment, not a health or safety rating. The daily nutrition values Watsin uses when you have not set your own are general reference values, not a recommendation for you. If you have a medical condition, are pregnant, or follow a diet for health reasons, ask a professional.

5.4 Allergies and intolerances. Watsin cannot tell you whether a product is safe for you to eat.

Never rely on Watsin’s flags, scores or answers to decide whether a product is safe for someone with an allergy, an intolerance or coeliac disease.
A product or ingredient without a flag may still contain an allergen, including traces (“may contain”) that Watsin did not pick up.
Always read the ingredient list and allergen information on the physical package, every time you buy, because recipes change.
Watsin only takes into account the profile fields you have filled in and switched on, and not every feature uses them.
If you are unsure, do not eat the product, and ask the manufacturer or a healthcare professional. In an emergency, call 112 or your local emergency number.

5.5 Your decisions. You decide what to buy and eat. Please check anything that matters to you against the package. If you find wrong product details, you can help by using Report this product or Re-scan in the app.

5.6 Liability. Our liability for this information is set out in section 13.

06Plans, credits and payments

6.1 Free use. Creating an account and scanning products by photo or barcode are free. Reading the labels of a product that is not in our database is also free, up to a daily limit on label photos. Products’ ingredient lists and nutrition tables, your saved products and your profile are available without credits.

6.2 Credits. Unless you have Watsin Unlimited, the following use credits: product evaluations and scores, ingredient flags and explanations, chat replies and Threads, translated product names, web search for products that are not in our database, and re-scanning a saved product’s labels to correct it. How many credits a request uses depends on how much work it takes. Your balance is shown in the app’s menu. New accounts start with a balance of free credits, and you can get more through invitations, coupon codes or by buying credits. When your balance runs out, these features stop until you add credits or subscribe.

Credits are not money. They have no cash value, cannot be exchanged for money, transferred to another account or sold, and are deleted with your account. We may change how many credits a feature uses, but credits already in your balance stay there.

6.3 Watsin Unlimited. Watsin Unlimited is an auto-renewable subscription, offered for the periods shown in the app (currently 3 months and 1 year). While it is active you can use the AI features without using credits; the credits you already have are kept for later. Unlimited is linked to the Watsin account you were signed in to when you subscribed. Reasonable-use limits still apply (section 6.8).

6.4 Paying through Apple. All purchases are made through Apple’s in-app purchase system and charged to your Apple Account. Apple processes the payment; we never see your card details. Prices are shown in the app before you confirm a purchase and may differ between countries.

6.5 Automatic renewal and cancelling.

Payment is charged to your Apple Account when you confirm the purchase.
The subscription renews automatically for the same period unless you turn off automatic renewal at least 24 hours before the end of the current period. Your Apple Account is charged for the renewal within the 24 hours before the current period ends.
You can manage or cancel your subscription in the Settings app on your iPhone (tap your name, then Subscriptions) or in the App Store app. Cancelling stops the next renewal; Unlimited stays active until the end of the period you have already paid for.
Deleting the app or your Watsin account does not cancel the subscription.
If we offer a free trial or introductory price, its terms are shown before you subscribe. Unless you cancel at least 24 hours before it ends, the subscription continues at the regular price.
If the price of Unlimited changes, Apple tells you in advance and, where Apple’s rules require it, asks for your consent before renewing at the new price.

6.6 Refunds. Because Apple handles all payments, refunds are handled by Apple under its own policies. You can request one at https://reportaproblem.apple.com. We cannot issue refunds ourselves. This does not affect your rights under consumer law: if something you paid for does not work as described, please also contact us and we will help.

6.7 Restoring purchases. If you reinstall Watsin or move to a new iPhone, sign in with the same email address and use Restore Purchases on the Subscription screen in the app.

6.8 Reasonable use and limits. To keep Watsin working for everyone and to prevent abuse, we apply reasonable limits, such as a daily limit on label photos and limits on invitations. These apply to every user, including Watsin Unlimited subscribers. We may limit or suspend use that is automated or clearly abusive.

07Acceptable use

When you use Watsin, you agree not to:

use it for anything unlawful, or to harm or harass others;
photograph anything other than product packaging with Watsin’s camera, or provide content you have no right to use;
send invitations to people who would not expect them, to addresses you control in order to collect credits, or as spam;
create several accounts to collect extra free credits or bonuses;
get around the credit system, usage limits or other access controls, or access Watsin’s services other than through the app;
copy, scrape or extract product data or AI output in bulk, or use bots, scripts or other automated means;
reverse engineer, decompile or modify the app, except where the law allows it;
interfere with, overload or test the security of Watsin without our permission (we welcome responsible security reports at contact@watsin.app);
send false or misleading product reports;
resell Watsin or use its data commercially without our written permission.

08Your content

8.1 What you provide. When you use Watsin you provide content such as photos of the front of packages and of labels, the label text and product details read from them, product reports, chat messages and the text of your profile fields.

8.2 Your rights. You keep any rights you have in your content.

8.3 Product contributions. Front-of-package photos and the product details read from labels are used to recognise products and to build and improve Watsin’s product database. You give us a worldwide, non-exclusive, royalty-free, perpetual and irrevocable licence to store, copy, process, adapt and use them to operate, maintain and improve Watsin and its product database. This licence continues after you delete your account; at that point the link between these contributions and your account is removed, as the Privacy Policy explains. Label photos themselves are deleted once they have been read.

8.4 Messages and profile fields. Your chat messages and profile fields are used only to give you the answers, flags and evaluations you ask for, as the Privacy Policy describes. They are stored on your device, not on our servers.

8.5 Your promise. You confirm that you have the right to provide your content and that providing it does not break the law or anyone else’s rights.

8.6 Feedback. If you send us ideas or suggestions, we may use them freely and without any obligation to you.

09Our rights in Watsin

The Watsin app, its software, design, name and logo, and Watsin’s product database belong to Synion OÜ or our licensors. We give you a personal, non-exclusive, non-transferable licence to use the app on Apple devices you own or control, as permitted by the Standard EULA, for your personal, non-commercial use and in line with these Terms.

Product names, brands and packaging shown in Watsin belong to their owners. Watsin is not affiliated with or endorsed by the manufacturers or retailers of the products it shows.

10Third-party services

Watsin relies on service providers for hosting, AI models, text recognition, email and payments; they are listed in our Privacy Policy. We remain responsible to you for Watsin as these Terms set out. We do not control the third-party websites that web-search results come from, and we are not responsible for their content. Apple processes payments under its own terms.

11Availability and changes to Watsin

We work to keep Watsin running smoothly, but we cannot promise that it will always be available, uninterrupted or free of errors. It may be unavailable during maintenance, because of problems with our providers, or because of your network.

We continue to develop Watsin. We may add, change or remove features, change which features are free and which use credits or Unlimited, and change usage limits. The products in our database also change over time. If a change significantly reduces what you have already paid for, we will tell you in advance; you can then cancel, and where the law gives you that right, you can ask for a refund for the unused part through Apple or by contacting us. Some updates of the app may be needed to keep using Watsin.

12Ending your use of Watsin

12.1 By you. You can stop using Watsin at any time and delete your account in the app (section 4.6). Cancel any subscription separately with Apple (section 6.5).

12.2 By us. We may suspend or close your account if you seriously or repeatedly break these Terms, if the law requires us to, or to protect Watsin or other users from harm. Where it is reasonable, we will tell you first and give you a chance to fix the problem.

12.3 If we close Watsin. If we decide to stop offering Watsin, we will tell you at least 30 days in advance, in the app or by email. You can then ask Apple for a refund for any subscription period you have paid for but cannot use; contact us if you need help with this.

12.4 What continues. Sections 5, 8.3, 13 and 15 continue to apply after your use of Watsin ends.

13Our liability

13.1 Reasonable care. We provide Watsin with reasonable care and skill. Because its product information comes from databases, the web, label photos and AI models, we cannot guarantee that it is accurate, complete or current (section 5).

13.2 Relying on product information. To the extent the law allows, we are not liable for loss or harm that results from relying on Watsin’s product information, scores, flags or answers instead of the information on the package or the advice of a qualified professional.

13.3 What we never limit. Nothing in these Terms excludes or limits our liability for intentional or grossly negligent breach, for death or personal injury caused by our fault, or for any other liability that cannot be excluded or limited by law. Nothing in these Terms limits your mandatory rights as a consumer, including your rights where digital content or a digital service is not as described.

13.4 Other limits. Apart from the cases in 13.3, and to the extent the law allows, we are not liable for loss that was not reasonably foreseeable when you started using Watsin, and our total liability to you is limited to the greater of the amount you paid for Watsin in the 12 months before the claim and EUR 50.

14Apple

These Terms are between you and Synion OÜ, not Apple. We, not Apple, are responsible for Watsin and its content.
Apple has no obligation to provide maintenance or support for Watsin. For help, see https://watsin.app/docs/ or contact us (section 18).
If Watsin fails to conform to an applicable warranty, you may notify Apple, and Apple may refund the price you paid for the app, if any. To the maximum extent permitted by law, Apple has no other warranty obligation for Watsin.
We, not Apple, are responsible for addressing any claims by you or a third party relating to Watsin or your use of it, including product liability claims, claims that Watsin does not meet a legal or regulatory requirement, and claims under consumer protection, privacy or similar laws.
If a third party claims that Watsin or your use of it infringes their intellectual property rights, we, not Apple, are responsible for investigating, defending, settling and discharging that claim.
You must comply with the export and sanctions rules set out in the Standard EULA.
Apple and its subsidiaries are third-party beneficiaries of these Terms. Once you accept these Terms, Apple has the right to enforce them against you as a third-party beneficiary.

15Governing law and disputes

These Terms are governed by the laws of the Republic of Estonia. If you are a consumer living in another country, you also keep the protection of the mandatory consumer laws of that country.

If you have a problem with Watsin, please contact us first at contact@watsin.app; we will try to resolve it with you. As a consumer you can also turn to the Consumer Disputes Committee (Tarbijavaidluste komisjon) of the Estonian Consumer Protection and Technical Regulatory Authority (https://www.ttja.ee).

Disputes are decided by the Harju County Court (Harju Maakohus) in Estonia, unless the law gives you the right to bring proceedings in the courts of the country where you live.

16Changes to these Terms

We may update these Terms, for example when we change Watsin or when the law changes. When we do, we will update the “Last updated” date above. For changes that materially affect your rights, we will tell you in the app or by email at least 30 days before they take effect. If you do not agree to the changes, you can stop using Watsin and delete your account before they take effect (and cancel any subscription with Apple). If you continue to use Watsin after that, the updated Terms apply.

17General

If any part of these Terms is found invalid, the rest remains in effect.
If we do not enforce a right straight away, we have not given it up.
We may transfer our rights and obligations under these Terms to another company, for example if Watsin is sold, and we will tell you if we do. Your rights under these Terms are not affected. You may not transfer your account or your rights under these Terms to anyone else.
These Terms, together with the Standard EULA, are the whole agreement between you and us about Watsin.

18Contact

Synion OÜ Liiva 28, Salme alevik, 93201 Estonia Email: contact@watsin.app Help: https://watsin.app/docs/