Trackbook is not available in different languages (yet). I plan to get an account for Trackbook on [Weblate](https://hosted.weblate.org/). In the meantime... If you want to help out, please contact me and check out [strings.xml](https://github.com/y20k/trackbook/blob/master/app/src/main/res/values/strings.xml).
Help is very welcome. Be it in the form of code, or artwork, or enhancements to the website, or tutorial videos, or whatever.
**But please** suggest new features or enhancements in advance on the [Issue Tracker](https://github.com/y20k/trackbook/issues) before implementing them.