Thank you. I am always willing to pay a premium for kids apps that don't have any dark patterns, subscription crap or in app purchases. It's sad that the market has been so corrupted that now customers are asked to pay a premium to keep kids safe and sane.
You'll be pleased to know that the app is not only a one-time payment, but also has zero tracking – no analytics, no logging, no adverts, and no data collection of any kind.
Can I see the source code? Else it's just words :/
Source code wouldn't help, because there's no way to verify any code I showed would be the same as the version on the App Store. Fortunately, you can just watch the network packets leaving from your device when you run the app, and you'll see literally nothing coming to me.