The Diablo 3 Server Checker monitors the status of servers in Europe, North America and Asia. It can be downloaded from Google Play now.
It is developed by Eluamous, the team behind similar apps for World of Warcraft and Star Wars: The Old Republic.
Diablo 3 launched earlier this week, but has encountered problems as the game's servers struggle to cope with the high levels of traffic.
Blizzard has issued an apology to users and claims to be monitoring the problem closely, confirming that scheduled maintenance will need to take place in the future.
The game is free to users who sign up for the World of Warcraft annual pass, a yearly subscription to the popular MMO.
A Starter Edition of the game has also been confirmed, offering a limited introduction to Diablo 3 with content similar to its private beta.
> 'Diablo 3' poll: What do you think of the dungeon-crawler?
Watch the Diablo 3 launch trailer below: