Smart Dyno Free displays your cars power output in real-time.

This app contains ads, Smart Dyno is also available as a paid version without ads.

Instructions: https://www.youtube.com/watch?v=uOm28j6K-CI

Multiple gauges and graphs from 0-50 bhp to 0-1000 bhp.

Accuracy is 0.5 - 3% depending on the quality of your phones accelerometer.

Simply enter your vehicle weight and transmission loss % and smart dyno uses accelerometer data and GPS to calculate your cars power output and display it in real time.

Features power gauges (0-50 0-100 0-200 0-300 0-500 0-1000 bhp)
Dyno graphs (0-50 0-100 0-200 0-300 0-500 0-1000 bhp)
Peak power hold (digital display)
GPS speed
G-Force graph

For best results mount your phone vertically with the screen landscape.

Smart Dyno gives highly accurate power figures and is great for AB testing the effects of modifications. Rolling road dynos often do not take into account total rolling resistance or aerodynamic drag so may produce higher figures than Smart Dyno. This can be mitigated by using the transmission loss adjustment.