Measure 0-60/Quarter-mile with your iPhone

**trev0006** · 07-30-2008, 12:51 PM

Measure 0-60/Quarter-mile with your iPhone - g-tac turns iPhone into performance meter

One day after spotting the "inexpensive" auto performance measurement tool Dynolicious for the iPhone, we've found another, and it's much cheaper. Liberty For One has released its own automotive measurement tool called g-tac, and its going for just $4.99. For less than half the cost of the Dynolicious tool, you get times and trap speed for the quarter mile, as well as times for 0-60 and 60-0. The g-tac utilizes the iPhone's (and iPod Touch's) accelerometer to determine velocity, so the phone doesn't have to be plugged into the car. The tool also graphs out your last three runs so you can hone your launch technique over time. g-tac's feature list doesn't appear to have the robustness of the Dynolicious app, which also features metrics for Lateral Gs and horsepower, and there isn't much documentation to detail what g-tac can actually do. The early reviews aren't so hot either, as the first seven purchasers have averaged a rating of just 2.5 stars compared to the four star rating for the Dyonlicious app. Since cheaper doesn't typically mean better, we intend to test both apps against an even more expensive hardware unit, and we'll let you know if either iPhone app is worth your hard earned digital dollars.

**eatsrice** · 08-25-2008, 09:22 PM

my friend bought the dynolicious performance meter for the i phone it is bad ass! It has a skid pad and everything....anyone used it before and compared it to your real 1/4 mile times at the track to see how accurate it is

**JoshieDoom** · 08-25-2008, 09:44 PM

I tried doing that with a stopwatch and measuring out the road. It was 13.9 .. lol.

**TempleU_WS6** · 08-25-2008, 09:53 PM

Originally Posted by trev0006

13.86 @ 121?? WTF?? and a 3.17 60ft?!

What the hell car was this?

**B34M3R** · 08-26-2008, 03:19 AM

z06 on bald tires?

or, g-tac failure.

**third_shift|studios** · 08-26-2008, 05:14 AM

COOOOL!!! makes me wish i had an iPhone now...

**SeVeReDiStOrTiOn** · 08-26-2008, 07:06 AM

Dynolicious is a sweet program...it's 13 bucks well spent. As you save you can put in your mods at the time to record any gains...and you can get averages from all your runs.

**nhraformula** · 08-26-2008, 08:22 AM

those little programs are decent, but personally i much rather spend 20 bucks at the track to race.

**86 IROC-Z** · 08-26-2008, 09:32 AM

It's a cool idea in concept, but they'll realize their mistake when assholes start stopping on the highway to estimate thier track times...

**00 formula** · 08-26-2008, 10:40 AM

Originally Posted by 86 IROC-Z

It's a cool idea in concept, but they'll realize their mistake when assholes start stopping on the highway to estimate thier track times...

Can you imagine all the ricers doing time trials on the street.... yea that's awsome.

I mean heck 1/4 mile times them SOBs will be flying around at 80-85 MPH