couchbaselabs/TouchDB-Android — comment on commit 272351eb0037df2d938b4d4e35e05e61239492ea
File:  line 0
By mschoch:

TouchDB-Android-Listener is an optional component that allows it to behave more like CouchDB by being an HTTP server. For CouchApp style applications where the documents contain javascript which callback to the database, this feature is essential. For many traditional mobile applications this module will not be necessary.