Darrin Sparks

Rated 0.00(0) — Darrin Sparks

Racing Ratio Mobile - Android app to calculate transmission gear ratio's for " Lenco " type planetary racing transmissions. Based on the original Racing Ratio windows program that has been used for over 15 years in the professional and sportsman drag...

Rated 2.00(1) — Darrin Sparks

A simple basic money saving app to easily save cash with no budgets to follow and no bank account or personal information to enter. Follow this simple plan and you will save over $1000 in less than a year. Anybody can do this plan, we all spend more...

Rated 0.00(0) — Darrin Sparks

Racing Ratio Mobile Demo - Limited Version of the new Racing Ratio Mobile appRacing Ratio Mobile - Android app to calculate transmission gear ratio's for " Lenco " type planetary racing transmissions. Based on the original Racing Ratio windows program...