LEGO DUPLO World is arguably the most polished digital toy box for toddlers on the market. It manages to translate the 'click' of physical bricks into a digital space better than almost anyone else, and the educational content is genuinely thoughtful rather than just being 'math problems with a coat of paint.'
However, be prepared for the monetization. The app is a masterclass in 'nag-ware'—showing kids exactly what they're missing out on to get them to hand the tablet back to you for a credit card authorization. If you can get past the paywall friction, the content itself is high-quality, safe, and genuinely enriching for the preschool set.



