Tuesday Commenter App Roundup

What new app did you find this week that you want to share? Addictive game, helpful tool, or something completely different?


1. Please form your responses with: [OS] App Name that links to app store location.
2. ONE app only please. Do you like a few? Come back next week and submit your 2nd.
3. You can choose whatever OS you like. iOS, Android, OS X, Windows, whatever.


[PC/Mac/Linux] Dota 2 - free - Since it has opened up from beta yesterday, I've played the tutorials and look forward to getting some time to really dig into online play.