Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.
Navigate a world of jars to rescue kidnapped children. Stick to ceilings and floors to solve puzzles and collect keys. Open doors to progress through 220 levels with secret solutions and alternate goals.
Generate time-based one-time passwords that change every 30 seconds. Share secure verification keys via QR code. Track used codes. Function offline without internet. No registration or server sync required.
