Acoustic Tachometer (RPM)

If you are Android owner,you now can download Acoustic Tachometer (RPM) for free from Google Play. The application is designed for use in English language. It weighs in at only 10MB to download. The new Acoustic Tachometer (RPM) app version 1.0.0 has been updated on 2014-11-20. The Apple Store includes a very useful feature that will check if your device and iOS version are both compatible with the app. Most iPhone and iPad are compatible. Here is the app`s compatibility information: 2.1 and up

interesting app pretty good not exactly 100 percent accurate but close enough to get the job I was working on done my brother and i were timing the engine of an old 280z the tach in the car didnt work this app was actually a huge help I believe the option for 2 stroke and 4 stroke are backwards was accurate as possible with the 2 stroke setting and was way off on the 4 stroke setting regardless not bad at all                 Jason Dreager

Not sure why the poor reviews Works inside the cabin of my SS just fine I think the some of the bad reviews are from the lack of understanding about how it works Could update a little quicker though                 Kevin McCarthy

too sensitive app just picked up all background noise as rpm tried it in a quiet a room as possible and just varied between 3 5000 rpm when i actually put it close to a motorcycle it made no difference at all     rob young

Always read 9000 rpm Never gave anywhere near accurate reading     Steve Warriner

Works rather well on my motorcycle 4 stroke single cylinder however the resolution is quite high 161 made it difficult to set an exact idle speed                 Rudi Pickering

With my bike idling it says 8000rpm Not very accurate     Richard Carr

Sorry to say it didn t work for my chainsaw Readings were clearly wrong eg reading went lower when the motor speeded up Maybe too close to the motor Any instructions             William Wright

Doesn t work at all Single cylinder 4 stroke bike engine No background noise it just sits at random numbers Waste of time     Maki Stavros

slow but it works went on YouTube and tested it on a V10 LFA                     Mr.ActionGal101

erroneous doesnt work on a toyota 4runner with a four cylinder and exhaust immediately uninstalled     Will E

Does not work Would give it 0 stars     Ken Cook

Worst app no any rotating parts still showing 2000 rpm     Sagar Tupe

This app is stupid the first picture he s doing it using a ford fiesta but one problem my car or truck can t do it     Car and Truck Kid

doesn t seem to work at all     Christopher Reagh

don t download it will not working     jenu valiyattil

Better choice to find rpm                     A kumarmba26

it will show you numbers in vacuum too totally fake     Ram yadav

dont have actual rpm simply counting the number         Amal K Raju

this app working my phone best 97 ok working                     karthi karthi

useless u0026timewasting app     Udaivir Singh

No good for 2 cylinder old diesel engines that run sub 500 rpm     Random Name

it s more use for bore wells                     Lo gu

doaent work at all     Justin ferguson

it s not a rpm meter     Harsh Takodara

I think this needs a sensativity slider like my music tuner so it can exclude extraneous noise It kinda works but jumps up when the engine chainsaw is clearly idling steadily My chainsaw is clearly plenty loud so I don t need it so sensative             A Google user

No use whatsoever options adjusted to reflect engine type yet app insists it idles at 6000rpm and goes down when revved up     Matthew Halfpenny

As people have said before useless numbers that don t relate to anything even in a silent room Next to my bike it said over 1900revs on idle and decreased when I increased the revs     Alex Bond

I tested it in Assetto Corsa and apparently my AE86 idles at 7k and redlines at 8k Seems legit             Z a c h

Great for setting up running speeds for petrol lawnmower and strimmer Remember to put correct settings in BEFORE using this app Thanks guys                 Simon Cousins

Absolutely useless Think my motor idles at 18 000 rpm Uuuhhhh nope     battlehammer25

Dose NOT work Said my bike on idle is 7523 rpm This app Sucks     paul maitoza

Not accurate Tell me my car is at 4500 5000 rpm even if lower the idling         Warren Zurcher

Used on a 200 EFI Mercury motor Seemed to be accurate above 1500 didnt do well when idling             Chris Battisto

Works well as long as there is minimal background noise                 Rob Wellman

Doesn t work Just spits out random numbers in a silent room     Josh Worrall

Don t know who was such a dumb ass hole who made it     J UL Y

Doesn t work it flashed between 2000 and 7400 in a quiet room and 4400 to 8800 with my motorcycle idling     Chris Aydon

Display was reading 4500rpm in total silence     A Google user

Works as long as not idling But Cool that it works at all                 Ron Dijcks

I used this to tune a lawnmower and it worked brilliantly Finer control of the minimum and maximum RPM would be nice                 Tim Rawlinson