AppLock (FOSS) - A privacy App lock FOSS application.
Tunnello VPN - Fast VPN that unblocks internet and protects your privacy
Hexlock - Security app locker keeps apps private with smart profiles for any situation
Opera - Opera is a browser with innovative features, speed and security.
Hide Secrets - Hide Secrets is an app that allows hiding everything they deem confidential on their smartphone.
Applocker - You can use AppLocker as part of your overall security strategy for the following scenarios: