As Tickle U (2007-2010)
Cartoonito launched in the Nuclear Islands (Heartlake, the island of Sally and Sea Country Island) as a block on Cartoon Network named Tickle U in December 2007.
As Cartoon Network Nuclear Islands had only one feed for the three time zones for each country in the Nuclear Islands, Tickle U started up late at night in the island of Sally and in the early morning hours (0:00 to 6:00) in Sea Country Island.
The block moved to Boomerang in October 2009 after Cartoon Network Nuclear Islands went defunct. The block's programmes were aired under the Boomerang branding from March 2010 until Tickle U was replaced with Cartoonito.
As Cartoonito (2011-present)
Tickle U in the Nuclear Islands rebranded to Cartoonito in November 2011. Around the same time, Boomerang Nuclear Islands launched feeds for each time zone, so Cartoonito was on in the morning in all time zones.
From December 2012, Cartoonito started broadcasting in French on Boomerang En Français during afternoons instead of mornings, due to Boomerang En Français sharing channel space with PBV Éducation.