Open the code or at least its parts

[PatrykMis]

The software needs privacy-sensitive permissions to work properly. Targeting old and unsupported SDK versions does not help too. Code obfuscation and encrypting lua scripts do not make it trustworthy at all, even Google is not doing it for their TalkBack's Play Store variant.

We can understand that it relies on some pre-paid functionality so even partial disclosure of the source code (for which Baidu and other external services are not needed) would help a bit.