Hide text messages, create hidden contacts.
It's disguised as "FuzzyBalls".
When you open the app, you would see bouncing balls. But wait till you see what happens when you shake the mobile.
Shake the mobile, enter password and you are in. Here you can do settings, send text messages, check the hidden messages.
No one will come to know that anything like text/sms hiding app even exists on the phone! Even notifications are disguised.

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"PassiveSms" enables you to respond automatically to an incoming call with a pre-prepared personalized SMS message.