iTunes link: FixGear

FixGear will calculate your bicycle gear ratio and speeds at different cadence (RPMs).  You select your tire size, crank length, front and rear gear then your gear ratio will be displayed.  Also your speeds in MPH or KPH for a range of cadence (40 - 120).  Tap on cadence list to change between MPH and KPH.  Tap on Gear info to switch between Gear Ratio and Gear Inches.

New: Gear History so you can create a list of gear selections to compare them on one screen.  Added Meters Development to the gear ratio information.

It is interesting to see what a change in any item will effect your gear ratio and speeds.  Also if you need any more sizes or lengths please send an email using the link below (ideas@admtech.net).