Terms of service

Effective date: 27 August 2026

By using HanFlow, you agree to these terms. If you do not agree, do not use the application.

Learning tool

HanFlow provides educational practice and automated feedback. Generated explanations, pronunciation assessments, translations, and handwriting assessments can be imperfect and should not be treated as professional certification.

Your data and accounts

You remain responsible for your Google account, configured AI-provider accounts, API charges, backups, and device security. You may use HanFlow without connecting any account.

Advertising and ad-free access

Advertising may appear after the stated free allowances. The optional HanFlow ad-free product is a non-consumable purchase handled by Google Play. It removes HanFlow advertising while the purchase remains valid and can be restored through the purchasing Google Play account. Refunds, reversals, and payment disputes are handled under Google Play's terms and may revoke the entitlement.

Web ad-free access requires Google synchronization with the same HanFlow progress profile. Availability can be delayed while purchase status or synchronization is refreshed.

Acceptable use

Do not use HanFlow to violate law, interfere with services, bypass provider limits, or access another person's data without authorization.

Availability

HanFlow is provided as available, without a guarantee that every device, speech engine, AI model, or third-party service will remain compatible or continuously available.

Changes

These terms may be updated as HanFlow changes. A revised effective date will identify the current version.

Contact

Questions: hanflow@davidkuc6.uk.