Apps like Sariel's Gear Calculator

Here are some great alternatives to Sariel's Gear Calculator by Sariel.pl :
RC Gear Calculator Pro
RC Gear Calculator Pro
★4.8
MTB Gear Ratio
MTB Gear Ratio
★4.8
RC Car GearCalc
RC Car GearCalc
★4.3
RC Calc
RC Calc
★3.7
BicyCalc - Bicycle Calculator
BicyCalc - Bicycle Calculator
★4.2
2-Stroke ToolKit
2-Stroke ToolKit
★3.3
Cycling Calculator
Cycling Calculator
★4.0
GearBuddy RPM-MPH Calculator
GearBuddy RPM-MPH Calculator
★4.3
RC Speed Calculator Pro
RC Speed Calculator Pro
★4.9
Hot Rod Calc
Hot Rod Calc
★5.0
RPM And Pulley Diam Calculator
RPM And Pulley Diam Calculator
★4.2
MotorSim 2
MotorSim 2
★4.4
MOTORUN ENGINE TOOLS - PRO
MOTORUN ENGINE TOOLS - PRO
★3.8
eTuning - For Shimano Steps
eTuning - For Shimano Steps
★4.3
FixedGears
FixedGears
★4.0
Gear Design 3D in TrueGeometry
Gear Design 3D in TrueGeometry
★3.8