The essential offline engineering calculation and diagnostics toolbox for mechanics, technicians, and car builders.
Over 12+ precision calculators including tire & rim fitment with 2D diagrams, wheel offset poke, drivetrain dyno math, trailer towing safety margins, and VIN camera recognition. Zero internet required.
Pure specialized functionality built with uncompromising performance.
2D scaled suspension diagrams comparing OEM vs aftermarket tires, wheel offset (ET), inner strut clearance, and speedometer error.
Calculate Wheel vs Crank Horsepower, drivetrain parasitic losses across FWD/RWD/AWD, and quarter-mile ET trap speeds.
Verify GVWR, GCWR, payload limits, and tongue weight percentages to prevent dangerous highway trailer sway.
Point your camera to scan 17-character VIN barcodes and read tire sidewall specification markings instantly on-device.
Designed natively for iOS with fluid animations and tactile controls.
Start free. Upgrade anytime with transparent monthly, annual, or perpetual options.
Access to tire size calculators, speed-at-RPM matrices, and basic automotive converters.
All 12+ calculators, suspension strut diagrams, and digital garage vehicle logging.
Unlimited offline camera OCR, towing safety checks, CSV exports, and priority features.
Have questions, feature requests, or need technical assistance with Pocket Mechanic? Our team is available 24/7 to support you.