Is Talking Ben the Dog safe?

I've recently stumbled upon a popular children's app called 'Talking Ben the Dog' and it seems to be quite engaging for kids. However, as a concerned parent, I'm wondering about its safety. Could you please elaborate on the security measures implemented in the app? Are there any privacy concerns I should be aware of? Additionally, does the app have any in-app purchases or advertisements that might be inappropriate for young children? It's crucial for me to ensure that my child's online experience is both fun and safe, so your insights would be greatly appreciated.