I will continue to beat the drum for Myflightbook.com

First of all...its free. Its versatile, the app supports android and iOS. The website is easy to navigate and the flight entry page is very customizeable.

There are a couple features available for subscription...i do the 25$ annual and I get nightly backups to my dropbox.

The developer is also responsive over his Facebook and email and is always open to suggestions and recommendations.

Did I mention that its free?