Apps like Digital Slide Rule

Here are some great alternatives to Digital Slide Rule by The Animated Software Company :
HP67 Calculator 2.0
HP67 Calculator 2.0
★4.4
Color Slide Jam
Color Slide Jam
★5.0
Rolling Ball: Slide Block Game
Rolling Ball: Slide Block Game
★4.9
Flight Computer Pro
Flight Computer Pro
★4.0
Flight Computer Sim
Flight Computer Sim
★4.5
RedX Stairs - 3D Calculator
RedX Stairs - 3D Calculator
★3.5
Roll the Ball® - slide puzzle
Roll the Ball® - slide puzzle
★4.2
Circular Slide Ruler
Circular Slide Ruler
★4.4
Ball Slider 3D
Ball Slider 3D
★4.5
Calculator
Calculator
★4.0
Calculator ++
Calculator ++
★4.7
Classic stair calculator
Classic stair calculator
★3.9
Derivative Calculator w/Steps
Derivative Calculator w/Steps
★4.9
COLREGs Lights & shapes
COLREGs Lights & shapes
★4.3
Ruler
Ruler
★4.5
Spiral Roll
Spiral Roll
★3.7