OK Don't Laugh but what is the Best andriod app for Dyno, and Speed tests?

[crazylegs]

i picked one up the other day PerfExpert and i actually paid for it but something about it's consistency i don't like.

Just looking for something that is fairly consistent if that is possible so i can test my upgrades, to see if there was even a tiny bit of improvement. the last car i modded was 13 years back and we didn't have a dyno in the city. so i would just do a stop watch test run the car from 2000rpm to redline in 2nd gear and a buddy would time it. SO i think an app could do that and take out human error on the stop watch

so in reality is there an app that more accurately record this type of test it would be nice it would start and stop based on the RPM then i could floor the car at 1500rpm in 2nd gear and the timer would start at 2000 and stop at 6500 or whatever i have it set at.

i might dyno my car and hit the track stock before the season is up just to get a real baseline and then compare it after a bunch of mods are done but i don't think i would want to waste the money on dynoing every mod i do. same with hitting the track it might just be a once year thing as the nearest track is over 1 hour away and it's boring drive.