bigbutterbean
Active Member
Next month I plan on finding a way to mount my phone on my bike to use as a speedo. But I was sitting here thinking and wondering if there are any speedo apps that can use your gear ratio and speed to calculate an estimated rpm? I stress ESTIMATED rpm, because I know that it wouldnt be near as accurate as a real tach, but it would give one a BASIC idea of rpm range, and I think it would be cool if there was a speedo app that could do that.