Tachometer For Iphone

The Acoustic RPM is the one I use on Android phone and is pretty accurate.

Andras, does your Acoustic RPM app have an icon that looks like this:



I have that one, but have yet to test it on anything dependable.

Yes Rusty, see in the bottom line..:

The good thing about it is that in split screen mode on your phone you can watch a vid on your plane or engine on the e.g. bottom half and measure the rpm on the top half:

Jim,

it was a small key-chain camera fixed to the wing with a Velcro tape, with which I shot the vid then uploaded it on youtube.


(This is a similar in-flight vid I posted on youtube ...)
Then, opening and playing the youtube vid on my phone in split screen mode allows me to run the RPM Gauge app in parallel, and the sound of the vid played on my phone is used by the app on my phone to calculate the engine rpm...and the split screen mode allows the simultaneous viewing of the vid and the RPM Gauge app both. Then it is only a matter of screenshot that finally made that picture that I posted here.

It simply senses the sound the phone emits while playing the video...nothing special..

Balogh
That is a really cool picture of the .051 cruising along. Very nice. Decent RPM as well.

Thanks
Ice

It really revs up going downhill.

Yes it downloads over 24k in dives..

I read through a few articles on the Forum. I am definitely Not Tech Savy, and don't have an I Phone for a decent app for a tach. Fine with my Android Samsung Galaxy2. I had picked up an old New in the Box Hobbico Digital Mini Tach for earlier projects. I am now Very interested in a Hand-Held Tachometer, that does not cost an arm and a leg. I have been performing a few modifications to the good old Cox 8cc Production engine. Deck Height, Tank and Backing Plate modifications, glow head testing and so on. The RPM's I am coming up with on the Old Hobbico cannot be right, swinging a 5-2Prop.
Would someone out here in the Forum be kind enough to make some suggestions?
Respectfully, Jim P Jenuine-Motor
P.s. Please don't recommend building a Tach, I already have too many "Irons In the Fire"

You may want to download the Android RPM Gauge app from Google play


Do not be mislead by the Hungarian language, it will download in your native English.

Has proven to some of us here on CEF to equal in accuracy  any photocell based handheld gadgetry sold by Hobbyco and others.