Terms of Service (Terms and Conditions)

Last updated: August 2026

1. Scope and provider

1.1 These Terms of Service ("ToS") govern your use, as a user ("you", "user"), of the language learning app FlowLingua ("App") and its associated website ("Services").

1.2 The provider and contractual partner is:

Tomas Chladek
Altkönigstr. 20
61169 Friedberg
Germany
Email: support@flowlingua.com

1.3 Use of the Services requires your consent to these ToS. By registering, purchasing a subscription or using the Services for the first time, you agree to be bound by these ToS (Section 305(2) of the German Civil Code (BGB)).

2. Description of services

2.1 FlowLingua is an application for learning languages. You can import your own content (books, documents, audio files, videos) and have it processed by machine-based methods, including:

2.2 The Services are offered in the following tiers:

2.3 All machine-generated content (translations, transcripts, definitions, de-codings) is AI-generated content. It is provided without any warranty as to accuracy, completeness or freedom from errors (cf. Section 8).

2.4 The App is available for Android (Google Play), iOS (Apple App Store) and as a web app in the browser. System requirements and update obligations are displayed in the app or in the respective store. Changes to the feature set in the course of further development remain reserved insofar as this is reasonable for the user.

3. Registration and account

3.1 Using the Services generally requires the creation of an account. You can register by email and password or via your Google account (OAuth).

3.2 Your details must be truthful and complete. You are obliged to keep your access credentials confidential and to report any unauthorized use without undue delay.

3.3 As a rule, only one account may be created per person. Sharing accounts with third parties is not permitted.

3.4 You can delete your account at any time in the app (for details on how we handle your data, see the Privacy Policy). When the account is deleted, your authorization to use the Services ends; paid subscriptions must additionally be cancelled via the channels set out in Section 5.5 — for store purchases via the subscription settings of the respective store (Google Play or Apple App Store), and for purchases via the web app via the cancellation process using the "Cancel contracts here" button (https://flowlingua.com/app/cancel).

4. Minimum age

4.1 The Services are aimed at persons aged 16 and over. Minors under the age of 16 may only use the Services with the consent of their parents or legal guardians.

4.2 By registering, you confirm that you meet the minimum age requirement or have the consent of your parents or legal guardians.

5. Prices, payment, subscriptions and cancellation

5.1 Unless expressly marked as free of charge ("Free"), the Services are offered as a subscription. The prices displayed in the app apply. All prices are understood to be final prices including any applicable value added tax; the value added tax is settled depending on the purchase channel: on Android via Google Play and on iOS via Apple (included in the price). For purchases via the web app we sell as a small business within the meaning of § 19 of the German Value Added Tax Act; no value added tax is therefore currently charged or shown (all prices are final prices).

5.2 The following subscriptions apply (as of: September 2026):

5.3 A free trial period of 7 days ("trial period") is granted for the Flow subscription, insofar as displayed in the app. If you do not cancel before the end of the 7-day trial period, the subscription converts into the paid subscription you have selected – 2.99 EUR/month for the monthly subscription or 24.99 EUR/year for the yearly subscription – and renews automatically for the respective billing period until you cancel it. We will remind you by email before the end of the trial period that it will otherwise convert into a paid subscription and how you can end the trial period in time (cf. Section 5.5).

5.4 Payment is made depending on the purchase channel: on Android via Google Play Billing (Google), on iOS via the Apple App Store (StoreKit / Apple in-app purchases), and when purchasing via the web app via Stripe (payment service provider: Stripe Payments Europe, Ltd. and its affiliates). The contract for web-app purchases is concluded with us (Tomas Chladek); the technical management of the subscription is handled by RevenueCat and payment processing by Stripe; their terms of service and payment terms apply. We only receive information from the payment providers about the subscription status and purchase history (not your payment data).

5.5 Automatic renewal and cancellation: The subscriptions renew automatically; the modalities of renewal and cancellation differ depending on the purchase channel and the type of subscription:

a) Monthly subscriptions (all purchase channels): Monthly subscriptions may be cancelled at any time. Cancellation takes effect at the end of the current month; access to the premium features remains available until then.

b) Yearly subscriptions via the stores (Android/Google Play, iOS/Apple): Yearly subscriptions concluded via a store may be cancelled at any time via the subscription management of the respective store (Google Play: the subscription settings of your Google Play account or https://play.google.com/store/account/subscriptions; iOS: the subscription settings of your Apple ID). Cancellation takes effect at the end of the then-current subscription period; access remains available until then. For store purchases, no pro-rata refund is granted in the event of early cancellation, unless the respective store provides otherwise or the law provides otherwise.

c) Yearly subscriptions via the web app: Yearly subscriptions concluded via the web app have a fixed initial term of 12 months. After the initial term, the subscription renews automatically for an indefinite period (not for a further year in each case). During the initial term, you may cancel at any time; cancellation takes effect at the end of the initial term, without any further charge being made. After the end of the initial term, you may cancel at any time with immediate effect; amounts already paid for unused days of the current annual period are refunded on a pro-rata basis.

d) Reminder before the end of the initial term: We will remind you by email no later than one month before the end of the initial term of your yearly subscription concluded via the web app of the possibility of cancellation and the modalities of cancellation.

e) Cancellation channels: Cancellation is made via the "Cancel contracts here" button in the app (Settings → Legal) and on the website (https://flowlingua.com/app/cancel). This button leads to an online cancellation process in which you identify yourself via account login or via email and a one-time code, confirm the cancellation with date and time, and immediately receive a confirmation in text form by email. For subscriptions via a store, cancellation is additionally made via the store management pages (see letter b).

5.6 Price adjustments are displayed in the app before they take effect; existing subscriptions generally continue at the prices applicable at the time of the contract.

5.7 A right of withdrawal exists in accordance with the Withdrawal Instructions (see Section 6 and the separate document "Right of Withdrawal").

6. Right of withdrawal and expiry in the case of digital content

6.1 As a consumer (Section 13 of the German Civil Code (BGB)), you generally have a statutory right of withdrawal of 14 days when concluding a distance contract. Please refer to the Withdrawal Instructions, which are provided as a separate document in the app (Settings > Right of Withdrawal) and on our website, for details.

6.2 Special case of digital content: The Services concern digital content that is provided immediately (directly) after the conclusion of the contract. The right of withdrawal expires if you have expressly consented to us commencing performance of the contract before the end of the withdrawal period and have confirmed that you are aware of losing your right of withdrawal as a result of this consent (Section 356(5) of the German Civil Code (BGB)). Before the first purchase, we obtain your express consent in the app that the service begins immediately and inform you that your right of withdrawal expires with the start of performance (checkbox in the purchase flow).

6.3 The right of withdrawal exists only upon the first conclusion of the contract or upon concluding a new subscription. There is no right of withdrawal for automatic renewals; these can be terminated at any time by cancellation (Section 5.5).

7. User content and rules of use

7.1 You can upload or import your own content (e.g. documents, audio files, videos, URLs) ("user content") and have it processed for learning purposes.

7.2 Declaration of rights: You warrant that you hold all rights required in your user content (in particular copyrights, exploitation rights, personality rights of depicted persons) and that the content does not infringe the rights of third parties. In particular, you warrant that you are entitled to process, translate and transcribe the content. When importing third-party content (e.g. books, videos, articles), you are obliged to comply with the terms of service of the respective third-party providers (e.g. YouTube, Google Books).

7.3 Purpose-limited license: By uploading/importing, you grant us a simple, non-exclusive right, limited to the duration of your account, to store, reproduce, translate, transcribe and prepare your user content exclusively for the purpose of providing and processing it within the framework of the Services. To the extent that you release content publicly in the app, it becomes visible to other users in the FlowLingua library (title, author and, where applicable, your display name). For publicly released content, you grant us a non-exclusive, revocable license limited to the purposes of the service (storing, reproducing, translating, making available to other users). Private content is not published. We are entitled to use processors for processing (see Privacy Policy, Section 4).

7.4 Prohibited content and uses: It is prohibited to upload content or use the Services in a way that:

7.5 Content reporting: In the event of violations of these provisions, other users or third parties may report content. We reserve the right to remove unlawful or contractually non-compliant user content, to stop processing and to block accounts (cf. Section 11). Due to statutory obligations, we also remove content once we become aware of specific infringements (notice-and-takedown; cf. Section 9).

7.6 Private (not publicly released) content is visible only to you and is your sole responsibility.

8. Liability and disclaimer

8.1 Machine-generated results: Translations, de-codings, definitions, transcripts and all other machine-generated content are created automatically and may contain errors. We assume no warranty for the accuracy, completeness, timeliness or usability of these results. You are responsible for how you use the results.

8.2 External content and services: The App accesses third-party content and services (e.g. YouTube videos, captions, Google Books covers and metadata, content of public third-party providers). We do not adopt this content as our own (Section 7 of the German Digital Services Act (DDG)); we have no influence on its availability, accuracy or lawfulness. We are liable for third-party content only in accordance with the statutory provisions (in particular Sections 8 et seq. of the German Digital Services Act (DDG)). Thumbnails and covers serve exclusively for display within the app.

8.3 Liability of the provider: We are liable without limitation for intent and gross negligence, for injury to life, body and health, and under the Product Liability Act. In the case of slight negligence, we are liable only for the breach of material contractual obligations (cardinal obligations), limited to the contract-typical, foreseeable damage. Otherwise, liability is excluded to the extent permitted by law.

8.4 Availability: The Services are operated with customary care. There is no entitlement to uninterrupted availability. Maintenance work, technical disruptions and dependence on third-party providers (e.g. Supabase, Google Play, AI providers) may cause temporary interruptions.

9. Copyright and notice-and-takedown

9.1 Rights in the App: The App, its features, texts, graphics and technologies are protected by copyright. Any transfer, reproduction, decompilation or abusive use of the App or its components beyond the contractually permitted scope is prohibited. The right to use the App is limited to you personally and is not transferable (statutory rights excepted).

9.2 Rights in user content: The rights in your user content remain with you (cf. Section 7.3).

9.3 Notice-and-takedown: If you believe that content is made available or processed via the Services which infringes your rights (in particular copyrights), you can send us a notice to support@flowlingua.com. We generally process complete notices within 14 days and remove the affected content without undue delay in the case of substantiated infringements. Your notice should contain:

  1. your name and contact details,
  2. the precise designation of the affected content,
  3. the designation of the rights or work infringed,
  4. your assurance that the information is truthful and that you are entitled to submit the notice.

9.4 DMCA agent notice: For notices under the US Digital Millennium Copyright Act (DMCA), we hereby designate the following contact point: email support@flowlingua.com. To the extent the DMCA applies to us, a notice is handled in accordance with its requirements; rights holders based in the USA may address a formal DMCA notice to the same address. In the case of a counter-notice, we will review it and, where appropriate, restore the content.

9.5 Note: Knowingly false notices may have civil and criminal consequences.

10. Availability and changes to the Services

10.1 We endeavor to keep the Services permanently available, but assume no guarantee in this respect (cf. Section 8.4).

10.2 We may change the Services and their feature set in the course of further development or discontinue individual features, insofar as this is reasonable for you (in particular in the event of changes in the legal situation, security requirements or where the operation of individual features is no longer economically viable).

11. Termination by the provider and account blocking

11.1 We may discontinue the provision of the Services as a whole with one month's notice to the end of a calendar month; current paid subscriptions then end early and any amounts already paid but not used are refunded proportionately.

11.2 In the event of a serious or repeated violation of these ToS (in particular Section 7.4) or of applicable law, we are entitled to remove individual content and/or block your account with immediate effect and terminate the contract without notice. Amounts already paid are not refunded to the extent that the violation is attributable to you; this does not apply insofar as a refund is mandatorily required by law.

12. Changes to these ToS

12.1 We may change these ToS for good cause, in particular in the event of changed legal, security or product requirements. Material changes will be communicated to you in good time before they take effect (in the app).

12.2 Changes are deemed approved if you do not object within six weeks of the notification. We will point out your right to object and the deadline in the notification. In the event of an objection, the previous conditions continue to apply; we are then entitled to terminate the contract without notice if the continuation under the previous conditions is not reasonable for us. For material price changes to existing subscriptions, Section 5.6 applies.

13. Governing law and jurisdiction

13.1 These ToS and the contractual relationship are governed by the laws of the Federal Republic of Germany, insofar as this is permissible with regard to consumers; mandatory consumer protection provisions of your country of residence remain unaffected.

13.2 If you are not a consumer, the place of jurisdiction for all disputes arising from this contractual relationship is the provider's registered office (Friedberg). With regard to consumers, the statutory place of jurisdiction applies.

14. Consumer dispute resolution

14.1 We are not willing and not obliged to participate in dispute resolution proceedings before a consumer arbitration board (Section 36 of the German Consumer Dispute Resolution Act (VSBG)).

Final provisions

15.1 Should individual provisions of these ToS be or become invalid, the validity of the remaining provisions remains unaffected. The statutory provision takes the place of the invalid provision.

15.2 Questions about the use of the Services, these ToS or the Privacy Policy should be directed to: support@flowlingua.com.