Safish can help you choose which fish to eat, and how often to eat them, based on their mercury levels and nutritional value.
It is meant especially for women who are pregnant and breastfeeding and young children and it is built based on data released by the US FDA.
It is a simple and lightweight application, offering quick access to recommendations about several types of seafood commonly available in supermarkets, restaurants and many other venues.
Safish does not require any Internet connection, so it is particularly helpful when travelling and an online connection might not be available.