-Featured Product
From gear and food to trip essentials and packout planning — Rig-Locker brings the clarity you need before departure, whether you’re loading for a weekend run or an extended expedition.
Rig-Locker Lite — Free
Clean, simple organization for essential gear, food, and packout — perfect for getting started. Free, permanently. No card, no subscription.
Rig-Locker Pro — $129 one-time
Center of Gravity engine, tilt readiness scoring, axle-by-axle payload analysis, towing safety, power and range planning — plus CAT scale calibration, so the numbers match the ticket, not the estimate.
Founding price: $129 one-time, regularly $179. First 150 rigs. Pay once, own it forever — no subscription, no renewal.
Know Your Rollover Numbers Before You Roll Out
Real output from a loaded 2025 4Runner Trailhunter build (2 people, 5 days). PRO calculates all of it from the exact spots you place your gear — before every trip.
- Loaded SSF: 1.2 — standard truck/SUV range
- Rollover threshold (SRT): 1.2 g — GOOD
- Static tilt limit: 50° · safe side-slope ≈ 25°
- Loaded CG height: 28.4 in (stock 27.5 in)
- Axle bias: 50% front / 50% rear — balanced
- Stability score: 79 / 100
SSF rollover risk calculated with the NHTSA formula. Estimates for planning only — confirm axle weights at a certified scale before departure.
The full Center of Gravity & Stability analysis — every number explained, with a recommendation.
Weigh It Once. Trust Every Number After That.
Every payload app on the market is guessing. It takes your gear list, adds up the weights you typed in, and hands you a number.
Rig-Locker Pro doesn’t have to guess. Take your loaded rig across a CAT scale, enter the steer and drive axle weights off the ticket, and the app corrects itself — permanently. From that moment on, every axle load, every GVWR and GAWR margin, every alert, every tire pressure recommendation and towing calculation is anchored to what the scale actually said, not to what the model assumed.
The correction is per-rig. Calibrate the Tacoma, and the Tacoma is calibrated — your other vehicles are untouched. Change your loadout enough to drift from the ticket, and the app tells you it’s time to re-weigh.
A scale ticket costs about twelve dollars. It’s the cheapest accuracy you will ever buy.
Look for the CALIBRATED tag on your Payload Calculator — that’s the app telling you it’s running on real numbers. (Pro only.)
It Lives on Your Home Screen. It Works Where There’s No Signal.
Rig-Locker isn’t something you download and install like a program, and it isn’t a website you have to keep logging into. Open it once, enter your key, and add it to your home screen — it becomes an app icon like any other. Full screen. No browser bars. No address bar eating the top of your display.
And it works with no signal at all. Activation needs internet exactly once. After that, the app runs entirely on your device — out at the trailhead, in the canyon, wherever you actually need it. Your rig data never leaves your phone.
1. Open the app. Go to ax-mfg.com/app/pro in your browser. Nothing to download.
2. Enter your key. Your license key arrives by email. Paste it in, tap Activate.
3. Add to home screen. iPhone: Share → Add to Home Screen. Android: ⋮ → Install app.
-Lite vs Pro
What's
Included
Rig-Locker by AX-Mfg
& gear management
| Feature | Lite | Pro |
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