Terms of Use
By using Dutie you agree to these terms. We have written them in plain language; please take a few minutes to read them.
1. About Dutie
Dutie is an app (iOS and Android) that plays historic calligraphy copybooks from National Palace Museum Open Data and Wikimedia Commons. It is operated under the name “Dutie” (讀帖). These terms apply to the app and to this website. “We” means the people who run Dutie.
2. Free and paid copybooks
Copybooks are either free or paid. Free copybooks can be read right away. Paid copybooks can be previewed first; to read one in full, you buy it individually.
Each paid copybook is a one-time purchase: you pay once for one copybook. There is no subscription, nothing renews automatically, and no account is needed. Prices are whatever the App Store or Google Play shows; please check before you buy.
3. Purchases and payment
Purchases and payments are handled by the App Store or Google Play and are subject to that store’s terms. Your payment details never pass through us. After a purchase, our server checks the transaction with the store and provides the paid copybook’s files only once it is confirmed.
4. Restoring purchases and platforms
On any device signed in to the same store account, you can tap “Restore Purchases” in the app to get back the copybooks you bought.
Purchases on iOS and Android are separate: a copybook bought on the App Store cannot be used on Android, and vice versa.
5. Refunds
Refunds are requested from the App Store or Google Play, not from us, and the store decides according to its own rules. After a successful refund, the copybook stops being provided according to the store’s refund result; there may be a short delay. See Support for how to apply.
6. Licensing and permitted use
- Copybook sources include National Palace Museum Open Data and Wikimedia Commons, under the license shown on each copybook. See Sources & License for the source and the changes we made.
- What you buy is the right to read that copybook in the app, for your personal use.
- The rights in the app’s interface, software and camera movements belong to Dutie.
- You remain free to obtain the open data from the Museum yourself and use it under CC BY 4.0. These terms do not limit that.
7. Please do not
- Get around purchase verification to obtain paid copybooks you have not bought.
- Attack or disrupt our servers, or use scripts to request files in large or repeated numbers.
8. Changes to the service
We may add, change or remove copybooks, and may adjust features of the app and website. The service may also be temporarily unavailable because of the stores, the network or our cloud provider.
9. Disclaimer and limit of liability
The app and the copybooks are provided “as is”. The text and descriptions of the copybooks come from the Museum’s data; we do our best to organize them but do not guarantee they are free of errors.
To the extent the law allows, we are not liable for indirect loss arising from using or being unable to use Dutie. These terms do not affect any rights you have under the law (for example consumer protection law) that cannot be excluded by contract.
10. Governing law
These terms are governed by the laws of the Republic of China (Taiwan).
11. Changes to these terms
When we change these terms we will update the “Last updated” date in the footer; major changes will be explained clearly on this page. If you keep using Dutie after a change, you agree to the changed terms.
12. Contact
For any question about these terms, write to my@esast.com.