Security and Privacy Apps for Phones Android and IOS

Signal (IOS)
Signal (Android/Play Store)
Signal is a service that gives you free fully encrypted messaging and voice calls without SMS or calling fees.

Bitdefender Antivirus (Free, Android/Play Store)
Bitdefender Antivirus (Paid - 14 day Trial, Android/Play Store)
Bitdefender Antivirus comes with a virus scanner as well as a privacy adviser, anti-theft measures and real-time web security for browsing, .

ChatSecure (Android/Play Store)
ChatSecure (IOS)
"ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to an existing Google account, create new accounts on public XMPP servers (including via Tor), or even connect to your own server for extra security."

Orbot (Android/Play Store)
In short "Orbot is a free proxy app that empowers other apps to use the internet more securely", it can be used as a VPN or can be used with other apps like ChatSecure to anonymize their services.

Orfox: Tor Browser (Android/Play Store)
This is a version of the Tor browser made to be used on Android for anonymous web browsing. **Note This App is Still in Beta**

Crypt4All Lite (Android/Play Store)
Crypt4All is a easy free app for mobile device encryption with 256 bit AES algorithm (AES Crypt version 2).
App Ops (Andoid/Play Store)
App Ops is a free app you can use to look at and control the permissions given to the apps you have installed.