Tops the list of paid book apps in Finland, Sweden and Norway.
Moomin e-book and apps have been "extremely well received", says Bulls Licensing.
In Finland, Sweden and Norway, the first interactive e-book – The Book About Moomin, Mymble and Little My – has topped the list of paid book apps. It is currently 11th in the UK list of top paid book apps for iPhone, and at number 25 for iPad.
The Observer newspaper has also listed it as one of the 15 best story apps for kids.
In addition to that app, Moomin and the Lost Belongings, created in co-operation between Spinfy Oy and WSOY, is the latest of the digital publications about The Moomins to have made it to the e-reader screen.
GPS navigation game Moomin Party, created by the Finnish company TAZ, is also available in app stores.
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