Eitje is available in Dutch and English. You can easily switch between the two languages, although you might need to navigate through a few steps in Dutch before you get there. Hopefully the images below will help you!
In the web version
If you're using the web version, and you want to change from Dutch to English, follow these steps:
Navigate to the menu icon in the top right corner, and choose "Persoonlijke instellingen ("Personal settings").
On the left, click "Instellingen en notificaties" ("Settings & notifications"), see image below.
In the top right corner you can now change the language.
In the app
In the app you navigate to the menu icon in the top left corner.
Then, navigate to "Instellingen" ("Settings").
Now, click "Taal aanpassen" ("Change language"), and change to English on the bottom of the screen.