Terms of use and purchase

Last updated: 31 October 2026

1. Provider and scope

Hanzi By Heart is provided by Konstantin Moritz van Megen, trading as Hanzi By Heart, Pionierstraße 12, 40215 Düsseldorf, Germany. Contact: support@hanzibyheart.com, +49 177 6922060.

These terms describe the app’s services and supplement the App Store licence where validly agreed. The licence is governed by Apple’s Standard End User License Agreement unless a valid custom EULA applies at acquisition. Applicable Apple terms determine Apple’s role in purchase, payment processing and billing. Statutory claims against the responsible party remain unaffected. Apple is not responsible for the app support we provide.

2. Service, requirements and account

Hanzi By Heart supports Chinese vocabulary learning through reading, listening, writing and scheduled review. The specific purchased offer defines its scope. The current app includes HSK 1–6 vocabulary and audio. The audio is computer-generated (text-to-speech). No particular exam result or error-free professional translation service is promised. Statutory conformity requirements remain applicable.

The app is intended for people aged 16 and over (age rating 16+ in the App Store).

The app is designed for iPhone. Compatible devices and required iOS versions are listed in its App Store entry. Local learning is available offline after access is unlocked; purchases, restoration, accounts and synchronization require the relevant services. This description does not promise unlimited use without any later entitlement verification or compatibility with every future OS version; it does not restrict legally required services or updates.

A Hanzi account is optional for local learning with valid access. Accounts enable synchronization. Keep credentials confidential and do not submit other people’s data through free-text fields. Optional analytics consent is not a condition of learning, purchase or account use. The privacy policy supplies information and is not a blanket consent.

3. Purchase and price

Before purchase, the applicable tax-inclusive price, service scope, billing period, any trial and subsequent charges are shown. The purchase is completed in Apple’s purchase sheet under its applicable terms. The app displays localized store prices; a monthly equivalent of an annual price does not mean monthly billing for an annual subscription.

A successful purchase is verified and its access unlocked. Restore purchases restores eligible access. Contact support with necessary details if this fails; do not send complete card information. Existing rights do not automatically change through a new text or an app update.

4. Monthly and yearly subscriptions

A subscription grants the described access during its term and renews under the Apple conditions disclosed before purchase unless cancelled in time through Apple. A free trial applies only when Apple confirms eligibility; subsequent charges and cancellation terms are shown before it begins.

Manage subscriptions through your Apple Account. Deleting the app, signing out or deleting a Hanzi account does not cancel an Apple subscription. Paid access continues until its scheduled end, subject to effective refunds, statutory rights or other justified grounds. The app’s plan display may be delayed; Apple’s billing/cancellation information is authoritative.

5. One-time purchase

The one-time purchase is paid once and is not a subscription; it does not renew automatically. The one-time purchase unlocks all Premium features of Hanzi By Heart, including those we add later. It remains valid as long as we operate Hanzi By Heart and ends when we fully discontinue the app. This refers to the operating life of the app, not the user’s lifetime. We provide the required updates, including security updates, for the entire operating life.

Business deregistration, a change of name or a transfer of the app to another person does not count as discontinuation. If we plan to fully discontinue the app, we will inform users in good time in the app and on the support site. Statutory rights, in particular to updates, remedies, price reductions, termination, refunds and damages, remain unaffected.

6. Updates and changes

Legally or contractually required updates, including security updates, will be provided with the required information. Further changes to continuously supplied digital products occur only under the statutory conditions, including required notice, no additional costs and applicable termination rights. These terms do not reserve a general right to remove paid core features at discretion.

7. Refunds, withdrawal and defects

Request an App Store payment refund through Apple’s Report a Problem. Apple assesses that request. For faults or missing access, also contact our support. Apple’s process does not exclude claims against the responsible contracting party.

For withdrawal, Apple's German purchase terms describe opening Purchase History in the Apple Account, selecting the order and using “Transaktion widerrufen” (withdraw from the transaction). Apple's terms also describe the time limit, possible exceptions and alternative ways to give notice. Withdrawal differs from ordinary subscription cancellation and from a refund request. Our own statutory performance obligations remain unaffected.

Statutory withdrawal rights depend on the contract and proper information. They do not expire merely because the app was installed or labelled digital. Where early expiry for immediate supply is legally permitted, the necessary conditions, including required express declarations and confirmation, must be met. The information supplied at purchase is relevant. Statutory remedies for defects remain separate from a discretionary Apple refund. The withdrawal route described applies to purchases under Apple's terms for Germany, the EU, the EEA and Switzerland; outside these countries, the statutory rights of the respective country apply.

8. Liability

Liability is unlimited for intent or gross negligence, including that of our legal representatives and vicarious agents, injury to life, body or health, and under mandatory liability provisions. Any guarantees apply according to their terms. For ordinary negligence, liability for breach of essential contractual duties is limited to foreseeable loss typical of the contract at conclusion. Essential duties are those necessary for proper performance and on whose observance users may ordinarily rely. Otherwise, liability for ordinary negligence is excluded only insofar as legally permitted. Mandatory claims, including under data protection and product liability law, are not restricted.

9. TestFlight beta

For a version expressly identified as TestFlight/Sandbox testing, test purchases do not charge real money or become production purchases. Test access/builds may end; they are not paid Lifetime purchases. Beta software may contain errors. This does not remove mandatory rights or authorize unlawful personal-data processing. Apple supplies additional TestFlight terms and privacy information.

10. Applicable law and contact

Where a valid choice of law can be agreed, German law applies without removing mandatory consumer protection of the country of habitual residence. No exclusive venue is imposed to consumers’ detriment. Questions or complaints can be sent to support@hanzibyheart.com or the address in section 1.

11. Separately licensed components

Included open-source components and separately licensed data are also governed by their respective licences. Associated copyright notices and licence texts are available in Settings → About Hanzi By Heart → Licences & acknowledgements. These supplemental terms do not restrict rights those licences grant for the relevant components. This does not grant a general licence to redistribute the whole app or its other content.