Reuhurinne book (published by Otava) series includes tasks and teasers, quizzes and puzzles, laughs and learning.
What we did was a digital Reuhurinne friend book. An app for both Android and iOS. During the project we worked close with the enthusiastic team from Otava. The first part of the project was to introduce a demo version of the app for children in the age between 7 and 12. The testing was documented and the project continued based on the results.