Users can record up to five 140 character memories every day, and make them memorable forever. The short length of each memory makes Memiary accessible for the time poor user, removing guilt associated with making short entries in traditional diaries.

Memiary entries are saved on the iPhone, and backed up to the web service when online. When offline, memories are saved on the iPhone, and synchronised to the server at the next opportunity, thus enabling Memiary as a travel companion. Diary entries can be viewed in last week, month and year length overviews.

Memiary was featured by Apple on the iTunes App Store for a two week period.