With Touch DJ, all the mixing can be done 100% visually, without any pre-cueing with headphones. The colored track waveforms are floating in the realm of the futuristic neon-glowing interface, along with the calculated beatmaps. It takes only a single tap in the beatmap zone to activate the "1-Tap Auto-Sync" feature, which will align the tracks perfectly.
Touch DJ Evolution simply makes the mixing too easy, removing the need of technical beatmatching skills. The tracks are simply always in sync, and moreover, the key of the tracks doesn't change when the speed of the track is modified, thanks to the "Master Tempo" ("Key Lock") technology.