BNStopwatch vs Engine Builder Pro

A digital stopwatch with big, bold numbers. Simple and easy to use. ■ Large, Clear Display The oversized numbers fill the screen, making them easy to read even from a distance. Perfect for group activities, parties, games, and sports timing. ■ Lap Time Recording Record and view lap times in a list. Great for sports training and performance tracking. ■ Color Customization Change the background and text colors to suit your style. ■ Multi-Device Support Available on iPhone, iPad, and Apple Watch. Use the iPad's large screen for meetings and events. Check your time at a glance with Apple Watch. ■ Perfect For ・Lightning talk (LT) time management ・Party and board game timers ・Sports timing and training ・Cooking and experiment timing ・Meeting and presentation time tracking

Engine Builder Pro brings engine build records and practical workshop calculators together in one place. Create detailed customer build sheets, store measurements and component specifications, attach build photos, generate PDF reports and keep portable backups. Calculators can use values from the current job, reducing repeated entry and helping keep calculations connected to the build being assembled. Workshop tools include: • Static and dynamic compression calculations • Target compression and engine stack-up solving • Piston-to-valve clearance visualisation • Cam degree and valve-train setup tools • Carburettor sizing with camshaft inputs • Ring-gap, rod-ratio, head-porting and measurement calculators • Job-linked build checks and missing-input guidance • PDF build sheets, photos and portable backups Cam-card details are entered manually, keeping the recorded figures under the builder's direct control. Engine Builder Pro is intended as a recordkeeping and calculation aid for knowledgeable engine builders. Users remain responsible for checking measurements, inputs, component instructions and final assembly decisions.