The official app for smartphones, tablets and laptops arrives to coincide with the first annual N7 Day.
The Dark Horse app features cloud storage on both Android and iOS Apple versions.
N7 Day celebrates the hit Mass Effect franchise.
The publisher is celebrating with the offer of a free copy of Blasto: Eternity is Forever - a comic written by lead Mass Effect game writer Mac Walters with art by Omar Francia.
Dark Horse owns a range of successful video game and movie tie-in rights, although it has admitted that it is unsure of the future of its Star Wars comics following the purchase of Lucasfilm by Disney.
Watch the Mass Effect 3: Retaliation DLC trailer below: