RPM - the turntable speed accuracy checker. 5/5
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RPM - the turntable speed accuracy checker.

By Philip Broder
Supported Devices : iPad 2 3G , , iPad 2 Wifi , , , , , , iPad 4th Gen , iPad 4th Gen 4G , , , iPad Mini , , , , iPad Mini 4G , , , , , , , , , , iPad 3rd Gen , iPad 3rd Gen 4G , , , iPhone 4S , , iPhone 5 , iPhone 5C , , , iPhone 5S , , iPhone6 , , iPhone6 Plus , , , , iPod Touch 5th Gen , , , , , ,

Release Notes

16/02/2017 | Version : 2.0 | Size : 26.7 MB
V2 is here with an amazing new feature to visualise wow and flutter variations of your turntable unique to RPM.
RPM already has the continuous chart showing variation over time, now this information is also plotted around the vinyl image centre to show a heat map of where in the turntable rotation the inaccuracies occur.
There are many ways of testing the average RPM of your turntable, many turntables even have it built in, however there is no other practical way of showing the wow/flutter variation over time than RPM.

12/01/2017 | Version : 1.9 | Size : 26.2 MB
Fix detection of 33 1/3 as rpm target in iOS10

10/01/2017 | Version : 1.8 | Size : 26.2 MB
Expanded the graphing range to +/- 5% rpm accuracy to cover those really bad turntables!
iOS10 SDK

Description

Test the RPM accuracy of your turntable, whether 16, 33 1/3, 45, or 78.

RPM uses the gyroscope in your iPhone to determine the rotation speed of your turntable, automatically determines which speed setting you're on and reports how accurate it is.

Simply place your iPhone on your turntable, close to the centre but doesn't have to be over the centre spindle. As the iPhone rotates the display will remain stationary from your perspective for easy reading.

The UNIQUE feature of RPM is that it shows a scrolling graph of the rpm accuracy variation over time, this shows wow/flutter effects, especially those associated with the turntable not being level, belt wear, etc. You can even detect the small drag caused by the stylus resting in the grooves of the record.

And now with the release of V2 there is the amazing new innovative feature to visualise wow and flutter variations plotted around the vinyl centre to show a heat map of exactly where in the turntable rotation the inaccuracies occur.

There are many ways of testing the average RPM of your turntable, many turntables even have this built in, however there is no other practical way of showing the wow/flutter variation over time than RPM.

For Upgraders the history graph parameters can be customised to:
- Set the moving average sample size.
- Accuracy at which to turn the rpm circle sold green.
- Set a duration after which the display updates will freeze so they can continue to be read after the turntable is stopped.
- detect and graph 16, 45, & 78 records.

The graphs kicks in when the rpm accuracy is better than +/- 5% and scales up to show extra detail right down to a +/- 0.5% charting range.

The iPhone gyroscope is very accurate, however if you are in any doubt you should calibrate RPM first using a quality turntable of known rpm.

Screenshots iPhone / iPod :

Screenshots iPhone / iPod Screenshots iPhone / iPod Screenshots iPhone / iPod Screenshots iPhone / iPod

Category

Utilities , Music


Comments and Ratings for RPM - the turntable speed accuracy checker.

RPM (1.9)
14/02/2017 10:00:00 5/5 By Moddy67
Brilliant app!!!

Brilliant Essential Tool (1.9)
24/01/2017 14:50:00 5/5 By Spitting nails
If you have a quality turntable and you can adjust your speed then RPM is an essential tool for setting the correct speed, even if you move your turntable it should be recalibrated. Paired with a stylus tracking weight gauges out are confident your deck is operating how it is meant to.

Rpm (1.7)
10/11/2016 14:35:00 5/5 By floripa jim
Brilliant!

Very Impressed (1.5)
09/05/2016 19:48:00 5/5 By Ajr1956
I got this app as it was free. But I was so impressed that I decided to upgrade and pay for it. My turntable was running fast and this app made it simple to set it to the correct speed.

Review (1.5)
08/05/2016 23:22:00 5/5 By Finish that
Clever app - it works and allows you to quickly test any changes you make to the turntable . For example I could show that a new belt stabilised my platter rpm without any guesswork .

Amazing app 😀😀😀 (1.1)
02/02/2016 00:47:00 5/5 By Sean peach
Helped me to gain the right speed of my technics turntable. Also I love how the numbers move around with the platter. Thank you so much Phillip A+++

VERY useful for any vinyl enthusiast (1.1)
26/01/2016 16:39:00 5/5 By seantobin
This app comes in very handy for any vinyl enthusiast. I always had a wondering if the speed my turntable was spinning was correct or not, and this soon helped me work that out. Five stars!!! :)


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