Yes, leitura de voz is free to download, however it contains in-app purchases or subscription offerings.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
leitura de voz has several in-app purchases/subscriptions, the average in-app price is €5.99.
To get estimated revenue of leitura de voz app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.