Terms of Use

End User License Agreement · Effective date: 3 August 2026 · Last updated: 3 August 2026

These Terms of Use (the “Terms”, and together with any order confirmation, the “Agreement”) govern your use of the lango.sh mobile application (Android package sh.lango.app; iOS bundle sh.lango.app) and the website at lango.sh (collectively, the “Service”). The Service is operated by an independent developer based in the European Union (“lango.sh”, “we”, “us”).

By downloading, installing, or using the Service, you agree to these Terms. If you do not agree, do not use the Service. Your use of the Service is also subject to our Privacy Policy, which is incorporated into these Terms by reference.

1. The Service

lango.sh is a language-learning writing assistant. You write a thought in your native language and an attempt in your target language; the Service uses artificial intelligence to compare the two and return feedback on meaning, style, and grammar.

AI-generated content. Feedback, corrections, translations, and learning material produced by the Service are generated by automated language models. They may be inaccurate, incomplete, or unsuitable for a given context. The Service is an educational aid, not a professional translation, legal, medical, or certification service. Do not rely on its output where accuracy is critical without independent verification.

2. Eligibility and accounts

• You must be at least 13 years old (16 in the European Economic Area) to use the Service. If you are under the age of majority where you live, you may use the Service only with the involvement of a parent or guardian.
• You may use the Service anonymously, or sign in with Google or Apple. You are responsible for activity that occurs under your account and for keeping your identity provider credentials secure.
• Anonymous accounts are tied to a single installation. Uninstalling the app or losing the device may permanently and irrecoverably delete an anonymous account and its history, including any Crunchies balance.

3. Your content

You retain ownership of the text you submit (“Your Content”). You grant us a non-exclusive, worldwide, royalty-free licence to host, store, process, and transmit Your Content solely for the purpose of operating the Service — principally, sending it to our AI provider to generate your feedback and storing your practice history so you can review it. This licence ends when you delete the content or your account.

We do not sell Your Content and we do not use it to train third-party general-purpose AI models. See the Privacy Policy for details.

You agree not to submit content that:

• is unlawful, or infringes the intellectual property or privacy rights of others;
• contains another person’s personal data that you have no right to share;
• contains credentials, payment details, or other sensitive secrets;
• is intended to harass, defraud, or harm others.

4. Acceptable use

You agree not to:

• reverse engineer, decompile, or disassemble the Service, except to the extent that applicable law expressly permits it despite this limitation;
• access the Service through automated means, scrape it, or resell, sublicense, or redistribute access to it;
• circumvent Crunchies limits, subscription checks, rate limits, or other technical restrictions;
• use the Service to develop a competing product, or to generate training data for another model;
• interfere with the operation or security of the Service or the servers behind it.

5. Crunchies

“Crunchies” are an in-app virtual currency used to perform actions such as checking a translation, requesting a hint, or generating a sentence.

• Daily Crunchies reset each day. Permanent Crunchies are not cleared by that daily reset, and are spent only after your daily balance is exhausted.
• Crunchies have no monetary value, are not property, are not redeemable for cash, and cannot be transferred, sold, or exchanged outside the Service.
• We may change the number of Crunchies granted, the number consumed by an action, and the balance held on any account — including Permanent Crunchies already earned — as the Service evolves, for example when rebalancing rewards or correcting a balance that resulted from an error, bug, or abuse. Such changes may be applied without individual notice; your current balance is always shown in the app.
• Crunchies cannot be bought on their own, so a change to your balance never affects anything you have paid for. An Extra subscription entitles you to the larger daily allowance described in section 6 for as long as it is active, whatever the underlying Crunchies figures are at the time.
• Unused Crunchies are forfeited when your account is deleted or terminated.

6. Subscriptions and billing

6.1 Extra

Extra is an auto-renewable subscription that grants a larger daily Crunchies balance (currently 450 Daily Crunchies). It is offered in two lengths:

• Extra Weekly — a subscription period of one week.
• Extra Monthly — a subscription period of one month.

The price of each option, in your local currency and including any applicable taxes, is displayed on the subscription screen in the app before you confirm a purchase. Prices vary by region and may change; any price change will be disclosed to you and, where required, will take effect only after you consent or at the start of a subsequent period.

6.2 Auto-renewal

Payment is charged to your Apple App Store or Google Play account at confirmation of purchase. The subscription renews automatically for the same period and price unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period.

6.3 Managing and cancelling

You can manage or cancel your subscription at any time in your store account settings:

• iOS: Settings → [your name] → Subscriptions.
• Android: Google Play → Menu → Payments & subscriptions → Subscriptions.

Cancelling stops future renewals. It does not retroactively refund the current period; you keep Extra benefits until the period you have already paid for ends. Deleting the app does not cancel a subscription.

6.4 Refunds

Purchases are processed by Apple or Google, not by us, and refunds are governed by the policies of whichever store you purchased through. We cannot issue refunds for store purchases directly. If you are an EU/EEA consumer, your statutory rights of withdrawal apply as provided by law and are not limited by this section; note that by starting to use digital content immediately you may be asked to waive the 14-day withdrawal period.

For help with a purchase, contact support@lango.sh.

7. Availability and changes

We aim to keep the Service available but do not guarantee uninterrupted operation. We may add, change, suspend, or discontinue features. If we discontinue a paid feature you are actively subscribed to, we will provide reasonable notice and, where required by law, a pro-rated refund via the relevant store.

8. Termination

You may stop using the Service at any time and delete your account and all associated data from Settings within the app. We may suspend or terminate your access if you materially breach these Terms, if required by law, or to protect the Service or its users. Where practical and lawful, we will give notice first.

9. Disclaimers

To the maximum extent permitted by applicable law, the Service is provided “as is” and “as available”, without warranties of any kind, whether express or implied, including implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement. We do not warrant that the Service will meet your learning goals or that its output will be accurate or error-free.

Nothing in these Terms excludes or limits rights that cannot be excluded or limited under the law applicable to you, including mandatory consumer-protection rights in the European Economic Area and the United Kingdom.

10. Limitation of liability

To the maximum extent permitted by applicable law, we will not be liable for indirect, incidental, special, consequential, or punitive damages, or for loss of profits, data, or goodwill, arising out of or in connection with your use of the Service. Our total aggregate liability arising out of or relating to the Service is limited to the greater of (a) the amount you paid us for the Service in the twelve months preceding the event giving rise to the liability, or (b) EUR 50.

These limitations do not apply to liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or to any other liability that cannot be limited under applicable law.

11. Changes to these Terms

We may update these Terms. The “Last updated” date above reflects the latest revision. Material changes will be communicated in-app or by email before they take effect. Continued use of the Service after an update constitutes acceptance of the revised Terms. If you do not accept them, stop using the Service and cancel any subscription.

12. Governing law

These Terms are governed by the laws of Hungary, without regard to its conflict-of-law rules, and the courts of Hungary have jurisdiction over any dispute arising out of them.

If you are a consumer resident in the European Economic Area or the United Kingdom, this does not deprive you of the protection of the mandatory provisions of the law of your country of residence, and you may bring proceedings in the courts of that country.

13. Contact

Questions, complaints, or claims relating to the Service: support@lango.sh.

14. Apple App Store — additional terms

The following applies where you obtained the app from the Apple App Store. In the event of a conflict, this section prevails over the rest of these Terms with respect to Apple.

• Acknowledgement. These Terms are concluded between you and lango.sh only, and not with Apple Inc. (“Apple”). lango.sh, not Apple, is solely responsible for the app and its content.
• Scope of licence. lango.sh grants you a non-transferable licence to use the app on any Apple-branded products that you own or control, as permitted by the Usage Rules set out in the Apple Media Services Terms and Conditions, except that the app may be accessed and used by other accounts associated with you via Family Sharing or volume purchasing.
• Maintenance and support. lango.sh is solely responsible for providing any maintenance and support services for the app. Apple has no obligation whatsoever to furnish any maintenance and support services with respect to the app.
• Warranty. lango.sh is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. In the event of any failure of the app to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any) for the app to you. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the app, and any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty will be lango.sh’s sole responsibility.
• Product claims. lango.sh, not Apple, is responsible for addressing any claims by you or any third party relating to the app or your possession and/or use of the app, including (i) product liability claims, (ii) any claim that the app fails to conform to any applicable legal or regulatory requirement, and (iii) claims arising under consumer protection, privacy, or similar legislation, including in connection with the app’s use of the HealthKit and HomeKit frameworks.
• Intellectual property rights. In the event of any third-party claim that the app or your possession and use of the app infringes that third party’s intellectual property rights, lango.sh, not Apple, will be solely responsible for the investigation, defence, settlement, and discharge of any such intellectual property infringement claim.
• Legal compliance. You represent and warrant that (i) you are not located in a country that is subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a “terrorist supporting” country; and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties.
• Developer name and address. Questions, complaints, or claims with respect to the app should be directed to support@lango.sh.
• Third-party terms. You must comply with applicable third-party terms of agreement when using the app.
• Third-party beneficiary. You acknowledge and agree that Apple, and Apple’s subsidiaries, are third-party beneficiaries of these Terms, and that upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary thereof.

15. Google Play — additional terms

Where you obtained the app from Google Play, your use is additionally subject to the Google Play Terms of Service. Google is not a party to these Terms and is not responsible for the app. Purchases made through Google Play are processed by Google and are subject to the Google Play refund policy.

See also: Privacy Policy · Account & data deletion.