The Pacemaker DJ app has gone through several iterations since its debut in 2008, first being a portable device and then years later as the app that could beat-match two Spotify tracks. Now, the Pacemaker continues with an update for the iPhone app that has more features to allow anyone to sound like a professional DJ with little effort.

The app already has a DJ set up within its system called Mallgan. Mallgan suggests songs that will match, beat-wise, the current playing song and then put them in the queue to play next. The update to the Pacemaker DJ app will now allow the user to take any song and have Mallgan play it as they wish.

So a song can transition to the next sooner if the user desires by just dragging it to the appropriate time using the feature called Mix Transitions. Or if a slow song appears accidentally during a party mix, the user can hit the lighting icon, which would activate the "Mix Now" feature, instantly fading into the next song in the playlist.

The app also updated its visual effects to move when the playlist transitions between songs, with "beautiful, new flowing waveform design" according to the Pacemaker. Users can now also save their mixes, which was a problem in earlier versions of the app because of licensing issues.

Another advantage in using the Pacemaker DJ app is that the app still supports the artists through Spotify, as Engadget pointed out. So the artists will still get paid when users choose their tracks. They also don't have to maintain storage on the phone for those tracks because they weren't downloaded.

The DJ circuit has gone under a few changes since the turntables and the rotating vinyl were used. However, the digital world has made its mark, allowing anyone with the technology to make a mix without needing to do all the work manually.

As the CEO of Pacemaker, Jonas Norberg, told The Verge, "DJ is a term that's very elitist. We want to make it possible for anyone to create a great sounding mix. That has always been our ambition."

Despite Pacemaker's applauded first entrance into the DJ market with their portable device, the Tonium Pacemaker, the device was discontinued in 2010. Those purists who prefer the turntables may lament, but the Pacemaker app is allowing anyone who enjoys music, and doesn't want to invest in the large hardware, to create their own mixes for any situation.