Terms of Service

Last updated: August 4, 2026

These Terms of Service ("Terms") govern your use of the Viglot mobile application and related services (together, the "Service") provided by Viktor Pergjoka, Kolonnenstr. 8, 10827 Berlin, Germany ("we", "us", "our"). By creating an account or using the Service, you agree to these Terms. If you do not agree, please do not use the Service.

1. The Service

Viglot is an AI-assisted language learning app. It generates scenario-based practice material, provides spoken and written exercises, and tracks your progress. Some exercises use speech input; some produce text and audio content using artificial intelligence.

We continuously develop the Service and may add, change, or remove features within the limits described in section 13. Access to specific features may depend on the device, the operating system version, your subscription tier, and the availability of third-party infrastructure.

2. Eligibility and Account Registration

You must be at least 16 years old — or, if higher, the minimum age required in your country to consent to the processing of personal data — to use the Service. By creating an account, you confirm that you meet this age requirement.

You are responsible for keeping your account credentials confidential and for all activity that occurs under your account. Notify us at info@viglot.com if you suspect unauthorized access.

3. Subscriptions, Payment, and Renewal

The Service offers a free tier with limited usage and a paid subscription that unlocks additional functionality and higher usage quotas. The paid subscription is offered as a recurring monthly plan; the exact price in your local currency, the term, and any current trial conditions are shown in the app on the purchase screen before you confirm. Payment is processed by the operator of the app store you used to install the app. For purchases through Apple's App Store, Apple is the merchant of record; for purchases through Google Play, the payment is processed by Google. In both cases, the store handles billing, receipts, and payment methods. We use a third-party subscription-management service to confirm your subscription status, but we never receive or store your payment-card details.

Automatic renewal: The monthly subscription renews automatically for successive one-month periods unless you cancel it. Because billing is handled by the app store, you cancel directly in your Apple App Store or Google Play account settings; per the store rules a cancellation generally takes effect at the end of the current billing period if made at least 24 hours before it ends. The subscription has no minimum term beyond the current billing period and can be canceled at any time with effect from the end of that period.

Price changes: We may change subscription prices with effect for future billing periods only. Price changes are implemented through the price-change procedures of the Apple App Store or Google Play, which notify you in advance and, where required by the store's rules or by applicable law, request your express consent before a price increase takes effect; if consent is required and not given, the subscription ends at the close of the current billing period at the previous price. A price change never applies retroactively, and you can in any event cancel at any time with effect from the end of the current billing period.

Trials: When available, we currently offer a 7-day free trial. The applicable trial terms (duration, eligibility) are also shown in the app at the time of the offer. A trial converts to a paid monthly subscription automatically unless you cancel before the trial ends. The app store notifies you before a trial converts to a paid subscription.

Taxes: The price shown on the purchase screen and in the app store listing is the final amount payable and already includes value-added tax (VAT) or equivalent sales tax where such tax applies to your country of residence. No tax is added on top at checkout. For purchases in the Republic of Korea, the displayed price includes Korean VAT of 10%.

Confirmation of payment: The app store confirms a completed payment immediately on screen and sends a receipt to the email address registered with your store account. Premium is unlocked in the app straight away, and you can review your subscription status and next billing date at any time under Settings → Subscription.

A plain-language summary of prices, tax, cancellation, and refunds is available on our Support & Purchase Information page (한국어).

4. Right of Withdrawal and Refunds

You may withdraw from a purchase and request a refund. The period depends on where you live; where more than one rule could apply, the one more favourable to you applies.

Consumers in the Republic of Korea: you may withdraw from a purchase within 7 days of the purchase date in accordance with the Content User Protection Guidelines. To do so, request the refund from the app store that sold you the subscription — App Store: reportaproblem.apple.com; Google Play: your Play order history. The store is the merchant of record: it decides the refund and issues it to your original payment method through its own refund process. Payment and refund handling both run through the store, so refund requests need to be addressed to the store directly. Korean-language details of this procedure, together with our contact details, are on our 고객지원 안내 page. Withdrawal may be restricted for content whose supply has been completed with your prior express consent; even then, you may seek a refund for the portion you have not used, and an ongoing subscription period is not treated as completed merely because you have started using the Service.

Consumers in the EU: you have in principle the right to withdraw from a distance contract within 14 days without giving a reason (§ 355 BGB).

Purchases through the app stores: Subscriptions and trials are purchased through the Apple App Store or Google Play, and each store provides its own withdrawal and refund information at the time of purchase. For App Store purchases, Apple is the merchant of record and your contractual counterpart for the payment transaction: address withdrawal and refund requests to Apple via reportaproblem.apple.com. For Google Play purchases, you can request a refund from Google Play through your order history; in addition, to the extent your purchase contract is concluded with us, you may exercise your right of withdrawal directly against us by sending a clear statement of your decision (for example, by email to info@viglot.com) — you may use the model withdrawal form below, but this is not obligatory. We do not process payments ourselves; refunds are executed through the respective store's payment systems.

Digital services: The subscription is a contract for the supply of a digital service. For such contracts, the right of withdrawal expires before the end of the 14-day period only when the service has been fully performed, and only if performance began with your prior express consent and your acknowledgement that you lose the right of withdrawal upon full performance (§ 356 Abs. 4 BGB). During an ongoing subscription period, the right of withdrawal does not lapse merely because you have started using the Service; if you withdraw after performance has begun at your request, a proportionate amount may be owed for the part of the service already provided.

Model withdrawal form (complete and return this form only if you wish to withdraw from the contract):

If you have questions about withdrawal, you can also contact us at info@viglot.com.

5. Acceptable Use

You agree not to:

• Use the Service for any unlawful purpose or in violation of any applicable law or regulation.
• Attempt to bypass, disable, or interfere with security, authentication, quota, or abuse-prevention mechanisms.
• Access the Service using automated means (scrapers, bots) except through interfaces we explicitly provide for that purpose.
• Submit prompts or inputs intended to extract, corrupt, or manipulate the AI systems that power the Service.
• Use the Service to generate content that is harmful, harassing, defamatory, infringing, sexually explicit involving minors, or otherwise unlawful.
• Resell, rent, or commercially exploit the Service or its outputs without our written consent.
• Reverse engineer, decompile, or attempt to extract source code from the app, except as permitted by applicable law.
• Create multiple accounts to circumvent usage quotas, trial limitations, or bans.

We may suspend or terminate accounts that violate these rules, with or without notice, depending on severity.

6. Your Content and Inputs

You may create custom courses and scenarios and provide inputs such as topics, vocabulary, and voice recordings. Content you create is stored privately to your account and is not shared with or made visible to other users of the Service.

You retain ownership of your original inputs. By submitting inputs to the Service, you grant us a non-exclusive, worldwide, royalty-free license to process, store, and transform them solely as required to operate the Service (for example, to generate exercises based on your inputs, to analyze pronunciation, and to improve your personal learning experience).

We do not use your personal inputs to train general-purpose AI models.

7. AI-Generated Content

The Service uses artificial intelligence to generate exercises, dialogues, explanations, and audio. AI-generated content can be inaccurate, incomplete, or inappropriate for your specific context despite our safeguards. You should not rely on AI-generated content for professional advice (medical, legal, financial) and should verify important information independently.

We make reasonable efforts to filter harmful outputs, but we cannot guarantee that every generated output is free of errors or inappropriate material. If you encounter problematic content, please contact us at info@viglot.com.

8. Intellectual Property

The Service, including its design, source code, branding, and pre-built learning materials, is owned by us and protected by intellectual property laws. These Terms do not grant you any ownership rights in the Service itself.

We grant you a limited, personal, non-transferable, revocable license to use the Service for private, non-commercial learning purposes for as long as you comply with these Terms.

9. Third-Party Services

The Service integrates with third-party platforms for authentication, payments, infrastructure, and diagnostics. Your use of features that depend on those platforms is also subject to their terms. We are not responsible for the availability, policies, or actions of those third parties beyond what our Privacy Policy describes.

10. Availability and Statutory Warranty

We aim for continuous availability but do not guarantee that the Service will be uninterrupted, error-free, or available at any given moment. We may temporarily suspend the Service for maintenance, upgrades, or emergency reasons. Scheduled maintenance will be announced in advance where practical.

Your statutory rights in the event of defects of digital products (§§ 327 et seq. BGB) remain unaffected. Nothing in these Terms limits those rights.

11. Limitation of Liability

We are liable without limitation for damage caused by intent or gross negligence, for injury to life, body, or health, for liability under the German Product Liability Act (Produkthaftungsgesetz), and under any guarantee we have expressly given.

In cases of simple negligence, we are liable only for the breach of essential contractual obligations — obligations whose fulfilment is a prerequisite for the proper performance of the contract and on whose observance you may regularly rely (so-called Kardinalpflichten). In such cases, our liability is limited to the damage that is typical for this type of contract and was foreseeable at the time the contract was concluded.

Any further liability is excluded. This limitation also applies in favour of our legal representatives and vicarious agents. Your statutory rights in the event of defects (§§ 327 et seq. BGB) and any other mandatory statutory liability remain unaffected.

12. Termination

You may stop using the Service and delete your account at any time via the in-app Settings or by contacting info@viglot.com.

We may terminate your account with immediate effect for good cause, in particular a material breach of these Terms; where the breach can be remedied and it is reasonable for us to wait, we will warn you first. We may also terminate a free account for inactivity, but only if you have not signed in for at least 24 consecutive months, and only after notifying you by email at least 30 days in advance so that you can keep the account simply by signing in. We will not terminate for inactivity while you have an active paid subscription. Finally, we may terminate or suspend an account where required by law.

Personal data will be deleted in accordance with our Privacy Policy. The courses and scenarios you created are deleted together with your account; individual generated practice materials (phrases, images, and audio) may be retained as shared, de-identified educational content.

13. Changes to the Service and to these Terms

Changes to the Service: We may modify the Service beyond what is necessary to maintain its conformity where there is a valid reason to do so — in particular adaptation to a new technical environment or to legal or regulatory requirements, security needs, changed usage volumes, or other important operational reasons — provided the modification causes you no additional cost and we inform you about it in a clear and comprehensible manner (§ 327r BGB). If a modification more than insignificantly impairs your access to or your use of the Service, we will inform you in advance by email or another durable medium, and you may terminate the contract free of charge within 30 days of receiving that information (§ 327r Abs. 3, 4 BGB), unless we provide you with continued access to the unmodified Service.

Changes to these Terms: We may amend these Terms with effect for the future where the amendment is necessary because of changes in the law or case law, or because of changes to the Service made in accordance with this section, and the amendment does not materially disadvantage you. We will notify you of amendments in the app and/or by email at least 30 days before they take effect. Amendments that would affect the price, the core features of the Service, or otherwise materially alter the contractual balance require your express consent (for example, through an in-app confirmation); your continued use of the Service alone does not constitute acceptance of such amendments. If you do not agree with an amendment, you may terminate your account at any time before it takes effect.

14. Governing Law and Jurisdiction

These Terms are governed by the laws of the Federal Republic of Germany, excluding its conflict-of-laws rules and the UN Convention on Contracts for the International Sale of Goods (CISG). Mandatory consumer protection laws of your country of residence remain unaffected.

For disputes with consumers, the place of jurisdiction is determined by applicable law. For disputes with merchants or legal persons under public law, the exclusive place of jurisdiction is Berlin, Germany.

The European Commission's Online Dispute Resolution (ODR) platform was discontinued on 20 July 2025 and is no longer available. We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board (Verbraucherschlichtungsstelle) within the meaning of the German Consumer Dispute Resolution Act (VSBG).

15. Severability

If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions continue in full force. The invalid provision will be replaced by a valid one that comes closest to the intended economic and legal effect.

16. Contact

Questions about these Terms? Contact us at info@viglot.com. For help with the app, a payment, a cancellation, or a refund, write to support@viglot.com — see our Support & Purchase Information page (한국어) for contact details, prices and tax, cancellation, and withdrawal procedures.