From a review:
[おかえりなさいませご主人様]というセリフはうっかり第三者に聞かれてしまうと恥ずかしい。家族の前で使用する際は注意が必要だ。セリフパターン変更機能がほしかった。
It’s embarrassing if strangers hear lines like “Welcome back, master”. Caution is needed when using the app in front of family. It would be nice if it were possible to change her speech patterns.
Direct link: Google Play. Free, but region locked. :'(