Best DJ Library Tool 2026 — Music Library Doctor vs Lexicon, Mixo, Cratehackers, MLT

TL;DR — which one for which job?

Pick Music Library Doctor if

You want a one-time-purchase, local-only desktop tool that handles cross-DJ library health (Rekordbox, Serato, VirtualDJ), fake-320/fake-FLAC detection, acoustic-fingerprint duplicate scanning, and missing-track repair. $49 lifetime, $19 founder price for the first 100 users. Free tier scans + scores forever.

Pick Lexicon DJ if

You need the broadest multi-app surface (Rekordbox, Serato, Traktor, VirtualDJ, Engine DJ) in a single tool and you're OK paying $100–200+ lifetime or recurring tiers for that breadth.

Pick Mixo.dj if

You DJ across multiple devices and your top priority is cloud sync of your library, crates, and cues across Mac, Windows, iOS, and Android — and a monthly subscription fits your budget.

Pick Cratehackers if

You want AI-driven crate building from text prompts, Spotify-to-crate import, Record Pool integrations (DMS, BPM Supreme, Beatport, DJcity, Beatsource), and zero-knowledge cloud sync — and the $15–30/month or $197–297/year fits your workflow.

MLT (Music Library Tool) is free but Serato-only, so it's a good companion to a Serato-focused workflow rather than a category competitor for the others. The full feature-by-feature breakdown is below.

Feature comparison

✅ = full support · ⚠ = partial / with caveats · ❌ = not supported

Feature	MLD	Lexicon	Mixo	Cratehackers	MLT
Pricing model	$49 lifetime ($19 founder)	~$100–200 lifetime + tiers	Subscription	$15–30/mo or $197–297/yr	Free
Free tier	✅ Full scans + scoring	⚠ Limited trial	⚠ Trial	⚠ Trial	✅ Free
Rekordbox (encrypted 6+)	✅ Native	✅ Native	✅ Native	⚠ via Rekordbox export	⚠ via Serato bridge
Serato DJ	✅ Native	✅ Native	✅ Native	✅ Native	✅ Native
VirtualDJ (incl. Favorite Folders)	✅ Native, ★ supported	⚠ Partial	✅ Native	❌	❌
Engine DJ	⚠ Roadmap	✅	✅	⚠ Via Rekordbox/Serato	❌
Traktor	⚠ Roadmap	✅	✅	❌	❌
Folder Library mode (no DJ software)	✅ First-class	❌	❌	❌	❌
Acoustic fingerprint duplicate detection	✅ Chromaprint	⚠ Metadata-based	⚠ Metadata-based	✅ AI Duplicate Killer	⚠ Basic
FFT audio quality scoring (fake-320, fake-FLAC)	✅ 0–100 per track	❌	❌	❌	❌
Library Health Score (0–100)	✅	⚠ Individual issue counts	❌	❌	❌
Missing-track bulk repair (cross-DJ-app)	✅ One-pass across apps	✅	✅	⚠ Per-app	✅ Serato only
Playlist conversion (all directions)	✅ 56 conversion pairs	✅	✅ 15+ apps	⚠ Limited	⚠ Serato↔Rekordbox
Folder consolidation wizard	✅ Playlist-aware	⚠ Manual workflow	⚠ Manual	❌	⚠ Serato only
Smart Source Upgrade (swap low-quality copies)	✅ In-app, Pro feature*	❌	❌	❌	❌
AI crate generation (text-to-crate)	❌	❌	❌	✅ Crate Text	❌
Spotify → library matcher	⚠ Roadmap (Track Matcher)	❌	❌	✅ Spotify→Crate	❌
Record Pool integration (Beatport, DMS, etc.)	❌ By design	❌	❌	✅ 5+ pools	❌
Cloud sync across devices	❌ Local-first by design	⚠ Optional tier	✅ Core feature	✅ Zero-knowledge	❌
Local-only / offline operation	✅ Full	✅ Mostly	⚠ Needs cloud	⚠ Needs cloud	✅ Full
Encrypted local database	✅ SQLCipher	❌	❌	✅ Zero-knowledge cloud	❌
Mac (Apple Silicon + Intel)	✅	✅	✅	✅	✅
Windows 10 / 11	✅	✅	✅	✅	✅
Mobile (iOS / Android)	❌ Desktop only	❌	✅	✅	❌

* Smart Upgrade is a Pro feature; you are responsible for ensuring you have rights to obtain replacement content.

Pricing in detail

Tool	Entry price	Lifetime cost (5 yrs)	Recurring
Music Library Doctor	$19 (founder, first 100) / $49 (regular)	$19–49 total	None
Lexicon DJ	~$99 starter tier / $199 lifetime	$99–199	Optional tiers
Mixo.dj	~$10–20/month	$600–1200	Monthly
Cratehackers	$15–30/month or $197–297/year	$900–1500	Monthly / Yearly
MLT	Free	$0	None

Five-year cost estimates assume current pricing holds and no extra add-ons. Lexicon's specific tier pricing has shifted multiple times; Mixo and Cratehackers reflect public pricing as of May 2026.

What MLD deliberately does not do

Every comparison has trade-offs. The features MLD intentionally leaves off — and why:

Cloud sync across devices. MLD runs entirely on your machine. Music files and the local database never leave the computer. If multi-device sync is your top priority, Mixo or Cratehackers fits better.

AI crate generation from text. Cratehackers' "Crate Text" is a polished product feature; MLD's scope is library health, not set-building.

Record Pool integration (Beatport, DMS, BPM Supreme, etc.). Cratehackers' core differentiator. MLD cleans what's on your disk; it doesn't help you acquire new music.

Mobile companion app. MLD is desktop-only — library work happens where the DJ software runs.

Engine DJ and Traktor support today. On the roadmap. Until then, Lexicon and Mixo are the multi-app tools that cover those platforms.

In return, MLD gives you a one-time purchase, fully local operation, FFT-based audio quality scoring (nobody else does this), the Library Health Score, the Group Scorer for dedupe, Folder Library mode for non-DJ users, and 56 native cross-app conversion paths.

Best DJ library tool in 2026