ACRA is a free library for automatically reporting crash or debug information from an Android application to some server over the network.
ACRA, which stands for Application Crash Report for Android, is a popular and free library that enables an Android application to automatically send a crash report or debug information, using Google doc is used as a typical "hello world" target. Google Doc is no longer recommended for production use, however the related open-source project Acralyzer provides a backend reports-analysis webapp built on a full open stack. A variety of other reporting connectors (e.g., HTTP POST, E-mail, etc.) are also available. ACRA also supports rolling-your-own reporting sender.
More information is available at the ACRA website.