Free
$0
forever
Library
500 tracks
- Up to 500 tracks
- Local BPM / key / energy analysis + Genre DNA
- Crate Digger with reasons
- Set Plan, Set Canvas and Set Architect
- Auto Flow, Spiral Paths and Set Check
- JSON backup
Build the night before you play it.
Plan the set, check every transition, then play it your way.
Free up to 500 tracks. Your files stay in your browser.
SPIRAL ARCHITECTS THE NIGHT.
Your library already has the set inside it.
SPIRAL helps you find it.
From thousands of tracks to one night that makes sense.
Set the intention once. SPIRAL carries it through all nine stages, from library to booth.
Define the night
before you build it.
Tell SPIRAL what kind of night you’re building, with energy planning from the opening to the peak. The rest of the system works from that intention: the Architect, Auto Flow, Spiral Paths, the transition checks and the Set Check all read from the Brief.
DURATIONVENUESTARTING ENERGYPEAK ENERGYPEAK TIMINGBPM DIRECTIONVOCAL PREFERENCESTYLE FREEDOMMUST-PLAYSENDING INTENTION
No decisions without context.
SET BRIEF2H CLUB SET
Starting energyE4.2
Peak energyE8.8
Peak timing70%
BPM direction120 → 126
Vocal preferenceBalanced
Style freedomBalanced
Must-plays3 tracks
Ending intentionEmotional finish
Energy arc: E4.2 → E8.8 at 70% → emotional close
Know what’s actually
in your library.
SPIRAL reads BPM, Camelot key, energy, danceability and waveform on your machine, and Genre DNA classifies genre and sub-genre with a confidence score, from the audio itself.
Night Bloom8A123 BPME7.3
HouseAfro House84% CONFIDENCE
MULTI-SEGMENT LOCAL ANALYSISMANUAL OVERRIDENO CLOUD CLASSIFICATION
And keep the library clean: titles, artwork and metadata, written directly into supported files.
Find what fits from here.
Discover individual tracks that fit from here. Pick the track playing now and SPIRAL finds harmonic matches: compatibility, energy direction and the reason why, scored before you commit.
NOW PLAYINGNeon Harbour · 8A · E7.2 · 123 BPM
01Silver Static9A+1 stepKeeps the groove, lifts energy gently
02Glass Horizon7A−1 stepSmooth release without losing the floor
03Amber Fields10A+2 stepsStrong build, hold until the peak
MATCHHOLDLIFTRESETSURPRISEGEMS
Every match comes with the reason it fits.
A set is more than a list of compatible tracks.
Define where the night begins, where it peaks and how it closes. Set Canvas and Set Architect shape the arc, and Auto Flow reshapes the running order around it.
BEFORE
random energy · weak order
Track AE7.4
Track BE5.6
Track CE8.8
Track DE6.3
AFTER SPIRAL
intentional progression · energy arc
OPENINGE4.8
BUILDE6.1
PEAKE8.8
CLOSINGE7.0
Plan the journey and keep the freedom to change it.
Where can the night go from the plan I already have?
Prepare alternative paths around the running order you’ve already built. You plan the main route. SPIRAL prepares the exits: HOLD, LIFT, RESET and SURPRISE for every point of the set, with the numbers and the reason behind each move.
Alternatives never repeat a track that is already in your set. The plan stays the plan; the exits are new music that fits.
Use as branchBlend MapReplace planned nextLock a choice
SPIRAL PATHS · NOW: Neon Harbour · 8A · E7.2 · 123 BPMΔ AGAINST NOW
PRIMARYMidnight Transit · 8A · E7.6 · 125Δ BPM +2 · ΔE +0.4 · 8A → 8A· your plan; alternatives below
HOLDSilver Static · 9A · E7.3 · 124Δ BPM +1 · ΔE +0.1 · 8A → 9A· Holds the groove while the room breathes
LIFTFirst Light · 8A · E8.1 · 126Δ BPM +3 · ΔE +0.9 · 8A → 8A· Raises the energy inside the same key
RESETDeep Current · 6A · E5.6 · 119Δ BPM −4 · ΔE −1.6 · 8A → 6A· Drops the room, breaks the pattern
SURPRISEGolden Hour · 11A · E7.6 · 124Δ BPM +1 · ΔE +0.4 · 8A → 11A· Three steps away, a colour change that still mixes
Know where to enter and where to leave.
SPIRAL analyses how two tracks move together. Structure, the exact mix-in and mix-out points, vocal overlap and how the energy travels.
You still make the move, and the preparation tells you it works before you get there.
TRANSITION MAP8A → 8A
TRACK A · Neon HarbourMIX OUT 04:18
↓32 BARS· VOCALS SAFE· ENERGY +0.4
TRACK B · Midnight TransitMIX IN 00:31
WHY THIS WORKS
- · Same Camelot key
- · Phrase boundaries align
- · Vocals remain separated
Set Check the night
before the room does.
SPIRAL checks the set as a whole. Energy, pacing, BPM, vocals, structure, transitions, style and must-plays, with evidence for every finding.
Every finding shows its evidence; you decide what to do with it. Issues can be marked intentional, dismissed, fixed with Spiral Paths or opened in the Blend Map.
Mark intentionalFix with Spiral PathsOpen Blend MapReview
SET HEALTH0 critical3 warnings2 notices
Peak arrives 14 min early
Target peak at 70% · actual at 58%
4 vocal-heavy tracks in a row
Tracks 6–9 · overlap risk across mixes
Transition risk between 12 → 13
Key jump +3, BPM +6
Artist repeated too soon
Same artist at 04 and 11
Prepare here and play where you already play.
When the set is ready, export the exact running order to the DJ workflow you already use, or print a booth sheet with keys, BPM, mix points and set times.
M3U8CSVRekordbox XMLBooth sheetJSON backup
Bring existing sets into SPIRAL.
Import a set you already built elsewhere into a chapter. The audio has to already be in your local library; only the list comes from the file.
REKORDBOX XMLTRAKTOR NMLM3U / M3U8CSVTXT
Your library should get smarter
every time you use it.
SPIRAL remembers what you planned and what you actually played. Prepared and played are tracked separately, and the honest record makes every next preparation better.
GIG MEMORY
SET HISTORY
12 sets prepared · 7 gigs confirmed
TRACK HISTORY · CONFIRMED GIGS
Played 86 · Skipped 14 · Unknown 6
Last played (this track)8 months ago
Typical positionLate / Peak
Prepared ≠ playedalways separate
Rotation windowlast 10 sets
FORGOTTEN GEMS
Find the tracks you
stopped looking at.
The engine crosses musical fit, freshness, underuse, transition fit and diversity, then tells you why it’s back.
FORGOTTEN GEMLAST PLAYED 11 MONTHS AGO
Amber Fields · 10A · E8.1
WHY IT’S BACK
- · Fits the Peak phase of this set
- · E8.1 matches the energy target
- · Compatible key with the planned next track
- · 0 appearances in the last 15 sets
Bring it back
STEP 01 OF 09
DJ software performs.
SPIRAL prepares.
The preparation layer between your library and the booth. Plan the night, check the risks and test the set before the room hears it.
Your music stays yours.
BPM, key, energy, Genre DNA, transitions and Gig Log run in your browser. No cloud analysis and no audio uploads.
100% on your machineNo audio uploadsWorks offlineJSON backup
Your files
↓
Your browser
↓
Spiral analysis, local
↓
Your local library
× No cloud audio
Prepare here. Play there.
Set Plan, Auto Flow, Spiral Paths and Set Check shape the order. Export M3U8, CSV, Rekordbox XML or a booth sheet; DJ Mix is the rehearsal room.
Spiral Agent plans with you, but it never mixes or replaces the DJ.
Hear the set before the booth.
DJ Mix is the local rehearsal room for the set you built. Check cues, loops, sync and transitions; then export the order and play it in your usual software. It is a test room, not a performance mixer.
YOUR SET OR PLAYLISTLOCAL AUDIOTRANSITIONSCUESLOOPSSYNC
Test a set in DJ Mix
Look inside the studio.
Start with your music.
Upgrade when SPIRAL becomes your workflow.
No card required to start. Your library stays on your machine on every plan.
Pro Monthly
$6.99
per month
Library
Unlimited
- Unlimited library
- Professional exports: M3U8, CSV, Rekordbox XML
- Printable booth sheet
- Gig Log and Forgotten Gems
- Cancel any time
Pro Yearly Recommended
$59
per year
Library
Unlimited
Everything in Pro Monthly.
$4.92/month equivalent, billed yearly.
Save 30% versus monthly.
Start free with no card.
Built by DJs. Spiral DJ is made by a small team of DJs in Portugal. It grows out of our own sets, the same preparation we used to do by hand.
The Spiral DJ team · Portugal · 2026
Payments by Stripe. Your card never touches our servers No ad trackers · anonymous usage counts are optional Your library stays local. Remove it any time