TongueCheck

About this app

What TongueCheck does

Three numbers on a CAT scale slip stand between you and a safe tow — if you know what to do with them. Most people don't. They pay for the weigh, get a receipt with steer, drive, and trailer axle weights, and then sit in the truck stop parking lot trying to remember which pass to subtract from which and what any of it means for the payload sticker in the door jamb. The forums are full of the same question: help me decipher my scale ticket. TongueCheck answers it on the spot, offline, in the time it takes to type in six numbers. Set up your rig once. Enter the tow vehicle's ratings from the door sticker and owner's manual — GVWR, GCWR, front and rear axle ratings, payload, receiver limits — and your trailer's ratings alongside. Then at the scale, log each weigh pass: truck alone, hitched with the bars off, hitched with the bars on. TongueCheck instantly derives everything the slip never prints: actual tongue weight, tongue percentage, trailer weight, gross combined weight, remaining payload, and exactly how much front-axle load your weight-distribution hitch restored. Fifth-wheel owners get the same treatment with pin weight and pin percentage. Every rating becomes a plain red, yellow, or green margin card — you see at a glance that your rear axle has 380 pounds of headroom and your tongue sits at 12.4 percent, right in the safe band. Tongue weight outside 10 to 15 percent is the classic setup behind trailer sway, and TongueCheck makes that one number impossible to miss. Because loadouts change, every weigh is saved. Add firewood, a generator, a second bike rack — the cargo ledger tracks what each item weighs and where it rides, so you see remaining payload shrink before the scale confirms it. Compare seasons, and export a clean weigh report as your record of a dialed-in rig. TongueCheck runs entirely on your device: no account, no signal needed at the scale, no data leaving your phone. Your ratings, your numbers, your margins — finally legible. • Rig garage for tow vehicle and trailer ratings, entered once • CAT scale multi-pass decoder: tongue weight, tongue percent, trailer weight, GCW • Red, yellow, green margin cards for GVWR, GCWR, axles, payload, and receiver • Weight-distribution hitch before and after comparison with front-axle restoration • Fifth-wheel pin weight and pin percent mode • Cargo ledger that tracks gear weight against remaining payload • Weigh history and shareable PDF weigh report • Fully offline, no account needed