Buyers beware!
This app is a waste of money and time and space I bought it and tried it on 2 of my motors and nothing happend! DO NOT BUY
RPM
This App is really hard to use. Be advised you'll need a physics degree to have any success.
It works well when you set it up correctly.
I needed an app to provide a confirmation during calibration of an analogue electronic rev counter in an aircraft. It does provide an excellent, accurate reading (as subsequently checked with an electronic digital tachometer) but it is critical to set the guess, tolerance and harmonics to suit the engine in question. If this process could be simplified or automated the app would be worth 5 stars! Even enabling the (ideally auto) scaling of the graphical display to enable easier matching of harmonics would be a great improvement. Nevertheless it is an ingenious app which could be very useful.
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Learning curve
This app does take some time to learn how to use. You do have to first estimate rpm , but comparing to my digital tach it is +- about 2 rpm. The nice thing is that you do not have to be near the ignition system for it to register
rpm. I use it with an iPod touch 8 gb and a small plug in mic ($3 Internet ).
rpm. I use it with an iPod touch 8 gb and a small plug in mic ($3 Internet ).
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Works!!!
Works as advertised.
However, you must read AND understand the directions.
Caution, you just can't turn it on and expect it to work.
However, you must read AND understand the directions.
Caution, you just can't turn it on and expect it to work.
No good for me
I only tried it on two different stihl chainsaws (2 stroke single cylinder)and it was garbage. At idle(2600rpm) it bounced from 300 to 6000 but mainly stayed around 850. I tried all the different settings with no luck. It was a waste of money for me.
Complete scam
This app does Nothing except generate random numbers. It's a total scam and I'll be pursuing a refund. Stay away.
Very useful app! Cheaper than a photo tach...
I used this app to calibrate alternator-driven tachometers on both a 3 cylinder Diesel and a 1 cylinder Diesel engine with great success. However, you have to use a little common sense when interpreting the readings as they can jump around by a few 1000 RPM's depending on the location of your iPhone and the engine sound it's picking up.
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Expensive app that doesn't work
VERY disappointed in this expensive app. I have previously used an RPM from sound app on a PC and it worked quite well. This one didn't have a clue. Used it in a single engine airplane (recommended use in the app description) and it didn't have a clue. Giving it a hint didn't help at all. Actual RPM was about 2,500 and it would jump from many thousands to a few hundred. And back again. Best use would be as a random number generator. Save your money.
Guess that's what I get for being an early adopter.
Guess that's what I get for being an early adopter.
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