Latest release from guardianproject.info/apps/

This release does not have a Play Store Description, so we grabbed one from version 16.4.1:

Orbot is a free proxy app that empowers other apps to use the internet more securely. Orbot uses Tor to encrypt your Internet traffic and then hides it by bouncing through a series of computers around the world. Tor is free software and an open network that helps you defend against a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security known as traffic analysis.

Orbot is the only app that creates a truly private internet connection. As the New York Times writes, “when a communication arrives from Tor, you can never know where or whom it’s from.”

Tor won the 2012 Electronic Frontier Foundation (EFF) Pioneer Award.

★ ACCEPT NO SUBSTITUTES: Orbot is the safest way to use the Internet on Android. Period. Orbot bounces your encrypted traffic several times through computers around the world, instead of connecting you directly like VPNs and proxies. This process takes a little longer, but the strongest privacy and identity protection available is worth the wait.
★ PRIVACY FOR APPS: Any installed app can use Tor via the Orbot VPN feature, or if it has a proxy feature, using the settings found here: goo.gl/2OA1y Use Orbot with Twitter, or try private web searching with DuckDuckGo: goo.gl/lgh1p
★ PRIVACY FOR EVERYONE: Orbot prevents someone watching your connection from knowing what apps you are using or websites you visit. All anyone monitoring your network traffic can see is that you're using Tor.

***We Love Feedback***
★ ABOUT US: Guardian Project is a group of developers that make secure mobile apps and open-source code for a better tomorrow.
★ OPEN-SOURCE: Orbot is free software. Take a look at our source code, or join the community to make it better: github.com/guardianproject/orbot or gitweb.torproject.org/orbot.git
★ MESSAGE US: Are we missing your favorite feature? Found an annoying bug? We’d love to hear from you! Send us an email: [email protected]

***Disclaimer***
Guardian Project makes apps that are designed to protect your security and anonymity. The protocols that we use are widely regarded as the state of the art in security technology. While we are constantly upgrading our software to combat the latest threats and eliminate bugs, no technology is 100% foolproof. For maximum security and anonymity users must utilize best practices to keep themselves safe. You can find a good introductory guide to these topics at securityinabox.org