RPM - Turntable Speed Accuracy
RPM - Turntable Speed Accuracy Summary
RPM - Turntable Speed Accuracy is a with in-app purchases iOS app in the Music And Audio category, developed by Philip Broder. First released 10 years ago(Dec 2015), the app has 2.4K ratings with a 4.40★ (good) average rating.
Recent activity: 1.7K new ratings this week (696 over 4 weeks) with stable momentum. View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Feb 19, 2025.
Store info: Last updated on App Store on May 5, 2025 .
RPM - Turntable Speed Accuracy was last scanned for SDKs 2025-02-19. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
MongoDB
nanopb
Google
Mixpanel
Firebase4.4★
Ratings: 2.4K
Screenshots
App Description
The best Turntable RPM accuracy test mobile app available.
See the RPM speed variations, know as wow/flutter, of your turntable in real time graphics like you've never seen before, continuous display makes it easy to make adjustments as necessary if your turntable allows it.
Test the RPM speed and wow/flutter accuracy of your turntable, whether 16, 33 1/3, 45, or 78.
And now with the Worldwide RPM Turntable Accuracy Database you can research what other RPM users are finding out about their turntable's accuracy and what they think of them.
● RPM is proud to be recommended by Rega Research Ltd, makers of some of the best turntables in the world.
● Great review by Techmoan on Youtube
● Used in high end TT reviews in Stereophile magazine
See the wow/flutter accuracy as the max % deviation from the average rpm of the turntable, as well as graphically in the chart.
Save all your rpm test sessions to the history log for review or sharing later.
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.
The most recent amazing new innovative feature is to visualise wow and flutter variations plotted around the vinyl centre to show a heat map of exactly where in the turntable rotation inaccuracies occur.
There are many ways of testing the average RPM of your turntable, some turntables even have this built in, however there is no other practical way of showing the wow/flutter variation over time than RPM.
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.
The RPM realtime display is reliant on