3,247
DENSITY ALTITUDE

YOUR AI CREW CHIEF
FOR DIRT

Scale sheet that learns your car. Gear calc for 37 classes. Tire log with 50+ compounds. Hunter AI crew chief who's been on dirt for 40 years. Built by a racer, not a software company.
APPLY FOR THE FOUNDING 100
FREE 3-DAY SNEAK PEEK · NO CREDIT CARD · JUST APPLY
NOW ACCEPTING APPLICATIONS
THE FOUNDING 100
We're hand-picking the first 100 racers to shape what Black Book becomes. Every applicant gets a free 3-day sneak peek — full access, no credit card, no strings. See everything. Touch everything. Then tell us what you think.
If you're accepted into the Founding 100, you get free access through development. Your feedback builds the product. When we launch, you're locked in at the best rate we'll ever offer.
3 DAYS
FREE FOR ALL APPLICANTS
$0
NO CARD NEEDED
100%
FULL ACCESS
APPLY NOW
Real racers only. Real car. Real track. We verify every application.
SPOTS REMAINING: 100

SCALE SHEET

Enter your four corners. Cross, left, rear, bite — all calculated. Log your adjustment. After 3 changes, the app learns: "On your car, 1/4 turn RR = 3.2 lbs cross."

37

CLASSES IN THE GEAR CALC

410 wing to LO206 junior. Kart to super late. Each class has FDR ranges by track size, RPM bands, tire diameter. Pick your class — get the right gear.

50+

TIRE COMPOUNDS

Hoosier D10 through D60. American Racer SD23 through HD70. Maxxis, Bridgestone, Evinco, Vega, MG, LeCont, Mojo. Durometer targets auto-fill when you pick a compound.

HUNTER AI CREW CHIEF

Ask him anything. Tight on entry? He'll tell you what to move. Walking the track? Send him a photo. He's coached through 40 years of every kind of car on every kind of dirt.

22

POINT TRACK WALK

Map every turn, every groove, every transition. Inclinometer for banking. Surface photos. Hunter reads your walk and calls the setup before you turn a wrench.

275

TRACKS

Geofenced. Pull into the parking lot and Black Book knows where you are, loads the track profile, adjusts the weather, and starts your race night.

You don't need a smarter app. You need a crew chief who gives a damn about what your car does on Saturday night. That's what I do.
HUNTER — AI CREW CHIEF

PICK YOUR PLAN

7-DAY FREE TRIAL · CANCEL ANYTIME
CADET
$8 /mo
Save setups to cloud
Hunter AI crew chief
Scale sheet + gear calc
Tire log + parts tracker
1 car slot
START FREE TRIAL
MOST POPULAR
WARRIOR
$15 /mo
Everything in Cadet
Surface science suite
Tire prep advisor
Photo setup log
Race night tools
3 car slots
START FREE TRIAL
CHIEF
$55 /mo
Everything in Warrior
22-point track walk
Night Chief unlock
Season analytics
Priority support
5 car slots
START FREE TRIAL
PROMOTER
$80 /mo
Everything in Chief
Promoter HQ dashboard
Fan engagement tools
Pit reporter + Go Live
10 car slots
START FREE TRIAL
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