Yes, Net Nanny is safe to use, but it could be a bit better — its privacy policy explains in great detail all of the information it collects from your child’s device and how that information is used. All information stored on Net Nanny’s servers is encrypted. This information is deleted from their main servers within 30 days of ending your contract with Net Nanny, but it could take up to 12 months for it to be deleted from its backup servers.
Net Nanny’s privacy policy states that your information may be shared with third parties. This isn’t exactly comforting, especially when competitors like Qustodio don’t share your data without good reason and Norton only does so for advertising and analytics.