Crowash

Crowash is the physics workbench for anyone who moves loads by hand-cart, barrow, sack truck, or trolley. Before you pile on the load and find out the hard way, Crowash tells you exactly how many Newtons your arms will carry, whether the cart will run away on a downhill, and how many trips the job will take. Lay your load on a visual bed plan, place blocks at precise stations, and the force engine recalculates in real time. Define your route leg by leg — choose from ten ground surfaces, set gradient and distance — and read the pull force for every stretch. Nine fault conditions are detected automatically, each with a plain-English fix and a one-tap correction you can apply immediately. Crowash ships with eight classic cart types — navvy barrow, sack truck, market barrow, platform dolly, and more — plus twelve common load types. Need to add your own cart? Drop measurement pins onto a photograph and Crowash reads wheel diameter, axle offset, bed length, and grip height directly from the image. Switch freely between metric and imperial, display gradients in degrees or 1-in-N, and set your personal pull-force ceiling. Works entirely offline. No account, no subscription, no tracking. Just the arithmetic a carter does by feel — made exact.