One person. No reviews yet.
Here’s the proof instead.
CortexDJ is built, supported, and sold by one person, and there isn’t a single customer testimonial on this site. Most software pages would bury both of those facts; I’m leading with them, because what I have instead is evidence you can check yourself. Receipts, not promises.
The evidence trail — and what it means for you
Hear it on music you know
The first set needs no key and no email, so you can judge CortexDJ on your own folder before you hand over anything. Our public demo sets are offline while we re-record them with music we have the rights to share (why); the new ones will again timestamp every transition.
A shipping record you can scroll
The changelog is public — dozens of releases from v2.12 onward, with kick-locked beatmatching, controller auto-detection, library management, mashups, natural-language set building and free license keys landing release after release. The app you get today keeps getting better — and you don’t have to take my word for the pace.
Your existing work counts
Already tagged your library in Mixed In Key or bought from Beatport? CortexDJ reads the key tags in your files, and analyzes everything else on your own machine. Export goes the other way too: your set in play order for rekordbox, Serato and five more DJ apps, free. For rekordbox you choose whether the beat grids and hot cues you set there stay.
No fake reviews. Hard audits instead.
There are no testimonials here because none exist yet, and I refuse to fake them. What you get instead: before big releases, the code goes through multiple adversarial review rounds — defects found and fixed before an update ever reaches you. I audit hard before I ship.
Why one person is a feature, not a risk
The direct line
hello@cortexdj.com goes straight to the person who wrote the code. No ticket queue, no tier-1 script. I usually reply within a day — and I can fix what I find.
Your music stays yours
Your music is analyzed on your machine and never uploads anywhere. That’s a design decision, not a settings toggle. What the app does send (activation, Pro renewal, update checks, a free-key request when you ask for one, which sends the e-mail you type, and optional diagnostics) is listed in the privacy policy.
Nothing to hide behind
A big company can absorb one unhappy customer; I can’t. So the home tier is free forever, Pro cancels anytime, and Lifetime carries a 30-day money-back guarantee.
Hear it on your own music
Start with the free home tier: the first set needs no key. Pro is $7.45/month or $59/year (cancel anytime); Lifetime is $127 with a 30-day money-back guarantee. Checkout is handled by Lemon Squeezy, our merchant of record.