NVH – Car Vibration Diagnosis

This app is great! In addition to the function of the app, it contains a WEALTH of information on NVH. The first few times I used it, I didn't really need NVH to diagnose the problem, but the app was spot-on with my conclusions. Faith in the app had been initiated. Today, I replaced the center support bearing on a two-piece drive shaft. I determined the customers' complaint to be the bearing and the app agreed with my diagnosis...a 1st Order Driveshaft vibration. I had my mechanic replace the bearing and the U-joints. After the replacements, I went for a test drive and, indeed, the bearing "growl" was gone. But, now, I noticed what I thought was tire/road noise/vibration. The NVH App disagreed with me. The app diagnosis was a 2nd Order Driveshaft vibration. I went back to the shop and asked my mechanic if he marked the driveshaft pieces for re-assembly. He said that he did, but admitted that in his haste, it was not re-assemble with the marks matching. He corrected the alignment of the two-piece shaft and the 2nd Order Driveshaft vibration went away! This app has proven itself, to me! If you are considering an NVH solution, this app is the REAL DEAL!

Had a slight vibration in my BMW 335i. It sounded like you were driving over a very fine rumble strip, inaudible below 45 mph or above 75 mph and worst at 60-65 mph. I suspected u-joints or the center support bearing found in most BMW, but bent wheels can produce similar symptoms. NVH app told me that my problem was a first order driveling vibration, which ruled out the u-joints (2nd order vibration). This gave me the confidence to remove the driveshaft & replace the CSB. Vibration gone!!

Gives out different things, you can put the phone in different locations and pretty much all the car is bad. Getting a refund is very difficult. No support from their E-mail regarding the refund, very difficult to get your money back, if you want to try this app, beware you will not get a refund easily. Once I get my money back I will edit this review.

I have done 23 measurements and they all average between front tires, rear tires and prop shaft. Each time it was something different so pinpoint one item is impossible. I'll have to recheck everything manually as it doesn't seem to be consistent, and therefore I'm questioning the accuracy.

I re-purchased this again. Now I'm not just disappointed, but angry!!! The developer (A) IS NOT TRANSPARENT + (B) IS ACTUALLY DECEPTIVE.... (A) They do not list thier database in a simple text format anywhere... (B) They advertise having models A-to-X of X, Y,Z Manufacturers and say from 1960-to-2023 from X, Y,Z Manufacturers. Yet IN REALITY, the database is just say Model C and D from 1960-to-2023... This App is plainly an overpriced grift with a bad UI and a dodgy (under)developer. Filthy mad.

Really need a trial version. Waste of money for me. Was very vague with its diagnosis and gave a long list of things to try. Was better off Googling the issue based on my own observations. Definitely not worth it for personal use, better off applying that money to the actual repair. Doesn't look like you can get a refund even if you use it once and uninstall it. Buyer Beware