ABC for Toddlers

My intention when making this app was primarily to make a distraction-free little game that would keep the kids focused on learning the letters. My own son tested a similar app as a very young child and managed to learn the letters very fast.
The first version of the app was in Serbian. It was released three years ago as a free Android game, and without any advertising, it got over 10,000 installs and a five-star rating.
I decided to make this English version for iOS and Android. The app contains no ads and no in-app purchases, so nothing comes in the way of the toddlers' full attention to fun and learning. The app price is $1.99.
I pencil-drew all the illustrations and recorded the voices with my wife. Initially I had made the app prototype in React Native, but it turned out the audio performance was poor so I decided to use Godot for the production version of the app.
I’d love to hear from other parents or solo devs—how do you handle the 'subscription fatigue' when trying to sell a one-time paid app in 2026?