Sir Steel is popular! In almost every country the app of this picture book-hero is featured by Apple. En lots of children help him build his hot air balloon.


We’ve got some great news for al the people who adore the professor: the app is being extended! Because of the most written comments: ‘The app is finished so quickly!’ So keep an eye the App Store, because Sir Steel will hold on to you a little longer within a few weeks.

Download in Appstore

There’s also a picture book of Sir Steel, unfortunately, it’s written in Dutch. But a pretty one it is!