Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Zenly - Zenly is a GPS tracker to locate your friends in realtime.

Radar Chat - Radar Chat lets you communicate with people nearby and discover things in the world around you.

/Lunchbox - Coordinate lunch trips with colleagues and friends in Slack.

Capture - A great free screen capture utility that allows you to capture either a window or the desktop and save it to either a file or the clipboard.

Questcity - A great way to get to know the city or museum