A full version program for Android, by Manoj Kumar Yadav.
The free design and engineering toolbox provides a gateway to generate true geometry from engineering to free-form shapes, on your mobile and computer.
Generate gears, cams, and other mechanical components using a variety of profiles and geometrical shapes. Use the app to design a gear, find its dimensions, and generate its profile. The app can generate a variety of components such as a gear, a wheel, a pulley, and an axis.
Use the app to design a cam and a follower. The app allows you to specify the follower shape, the angle it forms with the cam, the radius of the circle it forms, and the pitch of the teeth.