The ticket in the glovebox is from March
You crossed the CAT scale the week you picked up the trailer, before the first long haul west. Since then: a second battery, a bigger toolbox, extra gas cans, and the fresh-water tank is full for this trip. The number on that ticket hasn't changed. The rig behind you has.
Overweight rigs rarely get there in one purchase. They creep, a few pounds at a time, trip after trip, while the paperwork stays frozen on weigh day.
Track the load, and the numbers follow

Add what's on board, and where it sits
Every load lives in a zone, cab, truck bed, pass-through storage, and counts against GVWR, trailer weight rating, axle loads and tongue weight. Move the toolbox from the truck to the trailer and the tongue weight figure moves with it.

Two taps for the weights that change most
Water tanks, propane and gas cans are consumables in loadmate: set the fill level, full, three-quarters, half, quarter, empty, and the effective weight updates. Your score and compliance refresh next time you open the Rig tab.
Changes-Since keeps drift visible
Everything you've added, moved or removed since your last weigh-in, in one list. When enough has genuinely changed, loadmate suggests a re-weigh, based on what moved, not the calendar.
From an App Store review of loadmate v1
โsuch an upgrade from an old spreadsheetโ
Common questions
- Do I need loadmate Pro to track my own rig?
Downloading loadmate and exploring the fully set-up demo rig are free. Tracking loads on your own truck and trailer, adding, editing and moving them, is a loadmate Pro feature.
- Can I try it before I subscribe?
Yes. loadmate is free to download on iOS and Android and opens on a demo rig with loads already set up, so you can see how weight tracking works before you add your own gear.
- Does it keep my GVWR and tongue weight current between CAT scale visits?
Yes. Water tanks, propane and gas cans are set by fill level, and every load counts against GVWR, axle loads and tongue weight, so your numbers update as the rig changes, not only on weigh day.
- How does it know when it's time to weigh again?
loadmate tracks what you've added, moved or removed since your last weigh-in and suggests a re-weigh when enough has genuinely changed, based on what moved, not a fixed calendar reminder.
Sizing up a different combination?
Run Can I Tow It? free in your browser: pick the truck and the trailer, get the verdict.
Try Can I Tow It? freeRead the full guide