DOS was the operating system that people born prior to 1983 ended up cutting their teeth on, and for many people the obsolete OS still holds some nostalgic value, particularly for games. Thanks to programs like DOSBox, millions of gamers are returning to the days of Duke Nukem and Commander Keen on their Macs or PCs. However, Power DOS by Power App GmbH, allows you to take all the fun of the 1980s and 1990s with you on your favorite iDevice.