Yes, ดัมมี่แห่งความสุข is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
ดัมมี่แห่งความสุข is free.
To get estimated revenue of ดัมมี่แห่งความสุข app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.