Agelong Tree has a multilingual interface. You can change the interface language in the menu "Settings" - "Language". The interface is currently translated into the following languages (in alphabetical order):

Arabic
Armenian
Bashkir
Belarusian
Bulgarian
Chinese
Croatian
Czech
English
Estonian
French
Galician
German
Hungarian
Italian
Latvian
Lithuanian
Polish
Romanian
Russian
Serbian
Slovak
Spanish
Tatar
Turkish
Turkmen
Ukrainian

You can contribute to the development of Agelong Tree by translating the interface into your own language. Please contact us and tell us which language you can translate into. In exchange we will provide a license for Agelong Tree for free.