Cross DJ - Music Mixer App

Review by eFreeware

Cross DJ is a mobile mixing app from MIXVIBES. It puts a two-deck setup on your phone or tablet, with the tools you need to blend tracks, add effects and share the result. The download is free, and the app has been installed more than 10 million times, holding a 4.2 average across 183,251 ratings.

The main reason to consider it is that it covers both sides of mixing in one place. You can pull in your own files, sort them, and use the app's analysis to line up tracks, or you can stream from SoundCloud and mix what you find there. For someone who wants to try DJing without buying a controller first, that combination is the appeal.

It has been around since March 2014, which is a long run for a mobile music app, and the developer still ships updates. The most recent one, version 4.1.2, added unlimited recording along with stability fixes. That suggests a tool that is being maintained rather than left behind.

The two-deck setup and how a mix comes together

The core of the app is a pair of decks, which is the standard starting point for mixing two tracks together. You import your own audio and sort the library by title, artist, album, BPM or length, so finding the next track is a matter of choosing the right column. The app detects the BPM of each song and also detects its key, which helps you judge whether two tracks will sit well together before you commit to a blend.

Once tracks are loaded, the app handles several jobs that would otherwise take practice. Auto-gain equalizes the levels of the two tracks, and auto-sync lines up their timing so they play in step. Keylock lets you change the tempo without shifting the pitch, which matters if you want to nudge a track into a comfortable range without it sounding wrong. These are the kinds of features that make a first attempt at mixing sound reasonable rather than chaotic.

The waveform view is where you watch the structure of each track, and it is the part of the screen you will look at most. The developer describes it as accurate. Assuming it holds up, the visual guide plus the automatic beat matching gives a beginner a fair chance of producing a listenable transition.

Effects, samples and the performance side

Beyond straight blending, Cross DJ includes a set of performance tools. There are over 70 one-shot samples and 12 loops to trigger during a set, plus a three-band mixer with a DJM EQ preset for shaping the sound. Loops can be launched from 8 beats down to 1/32, and quantize mode places hot cues and loops on the beat automatically so they land in time.

Slip mode keeps the underlying tempo steady while you loop, which is useful for adding a repeated phrase without losing your place in the track. You can set the pitch range anywhere from 4 to 100 percent, and bend it by hand for finer control. There is also a split audio mode that lets you pre-listen to a track in headphones before bringing it into the mix, which is the standard way to plan a transition without the audience hearing it.

If you would rather not mix by hand, automix will play tracks automatically from a playlist, an album or another source. That is a different use case from live mixing, and it suits background music at a gathering where nobody is watching the decks. Ableton Link is supported for playing alongside friends, and the app works with a list of MIDI controllers, including Mixvibes' own U-Mix range and Pioneer's DDJ-200, DDJ-400, DDJ-SB and Wego 2.

SoundCloud streaming and the recording restriction

You can connect a SoundCloud library and mix tracks from it, which saves you from building a local collection before you start. That is a real convenience for anyone who wants to try the app with music they already know. The catch is stated plainly by the developer: recording a mix that uses streamed SoundCloud tracks is not possible because of copyright.

So the recording feature and the streaming feature do not fully overlap. If capturing your set is the point, you will be working with files you have imported yourself, in MP3, AAC, FLAC, WAV or AIFF. Version 4.1.2 lifted the recording limit, which makes that side of the app more useful than it once was, but the restriction on streamed audio stands.

Recorded mixes can be shared, including to SoundCloud. That closes the loop for someone who wants to put a set online, as long as the source material is their own files. It is a limitation worth planning around rather than a flaw in the app itself.

What you need, and what the free download includes

The app is free to download and carries ads. It also offers in-app purchases, and the developer sells monthly and yearly subscription plans that unlock everything at once and cover future features as well.

On the hardware side, the app supports multichannel audio for USB-compliant sound cards, and it can control EQs and the crossfader with external hardware mixers. If you already own a compatible controller, that extends what you can do with the app considerably. If you do not, the touchscreen remains the interface, and the portrait mode option makes one-handed use easier when you are standing up.

The audio engine imports common formats. Latency is the sort of thing that varies by device, so it is worth testing on your own phone before relying on it for a live set. The app also lets you customize the setup with a color of your choice, which is cosmetic but welcome in an app you stare at for long stretches.

Who this fits, given what it is built for

Cross DJ reads as a tool for learning and casual performance rather than a replacement for a full club setup. The automatic beat matching, key detection and auto-gain do a lot of the technical work, which lowers the barrier for someone who has never mixed before. The sample pads, loops and effects give that same person room to experiment once the basics click.

It also suits someone who already mixes on hardware and wants a way to sketch ideas away from their main rig. The MIDI controller support and multichannel audio output point in that direction, and the library sorting by BPM and key makes it practical to plan a set on a phone. The subscription is the main question for that group.

For a listener who simply wants continuous music at a party, automix covers the job without any mixing skill at all. That is a different audience from the one the performance tools are built for, but the app serves both. It is a broad tool, and the free download makes it easy to find out which of those groups you fall into.

A free starting point for mobile mixing

Cross DJ earns consideration because it puts a serious set of mixing tools behind a free download. Two decks, BPM and key detection, keylock, auto-sync, samples, loops, a three-band mixer and SoundCloud streaming cover a lot of ground for someone starting out. The 4.2 average from a large number of ratings suggests the approach has found an audience.

The trade-offs are clear enough. Ads and in-app purchases sit alongside the free download, and the subscription is what unlocks everything at once. Recording is off the table for streamed SoundCloud tracks because of copyright, so anyone hoping to publish a set needs their own files. And the more advanced hardware features only pay off if you own a compatible controller or sound card.

My recommendation is to install it if you want to learn to mix on the device you already carry, or if you want a portable way to work on transitions and set ideas. It is a sensible entry point for beginners and a useful second tool for people with a home setup. Try the free version first, get a feel for the workflow, and decide about the subscription once you know how much you will use it.

What's new in version 4.1.2

Version 4.1.2 : - Unlimited recording - Onboarding and splash screen fixes - Stability Improvement and bug fixes.