Heartbleed Security Scanner is a very simple app from Lookout Mobile Security that tells you whether your phone is at risk from the OpenSSL Heartbleed bug.

It's exceptionally simple to use because there are virtually no options: open the app and it will automatically scan and tell you if your device is compromised.

Unfortunately, the simplicity means that it's incredibly limited and there's no detailed breakdown to see what apps could be affected, but it still works as a quick check in a pinch.