Useless
Response from developer
Hello, thank you for your feedback, always useful. The trial does limit the duration of the test, and this may be too short for some turntables. I am still working on a good balance between being able to try all the features but still have an incentive to upgrade. I hope you stick with it, it is worth the upgrade😀 Cheers Phil
Inaccurate
Response from developer
Hello, thank you for your feedback, sorry to hear you are not happy with the results. Unfortunately the app is only as accurate as the accuracy of the built in gyroscope, if you are getting such difference from a calibrated tool then it does point to an inaccurate gyroscope. If so then RPM has a solution for that, in settings you enter a calibration factor which then adjusts the rpm readings accordingly in real time from then on. It is also very important the the iPhone is placed absolutely flat over the centre of the platter. I hope that helps, let me know how you get on, of course I would like to improve that 1* rating😀 Phil
Fantastic, and accurate
Very disappointed - Totally inaccurate
I have a strobe and a speed test record to set my HiEnd turntable up with. When I checked with this app it showed a speed of 33.5, rechecked with the test record and strobe and the TT speed was spot on.
I double checked it on my new Technics 1500c quartz locked direct drive turntable, which lives in my office. Again the app displayed the wrong speed. Checked with the strobe and test record which confirmed that this TT was spinning at exactly the correct speed.
So in conclusion this app is totally inaccurate, which as speed accuracy is it only function makes it completely pointless. . .
Response from developer
Hi Charlie, Thanks for the feedback, please contact me on philipbroder (@) gmail.com so we can over this in more detail to make sure you get the best out of RPM. Briefly, iPhone gyroscopes are generally very accurate, and rpm is only as accurate as the built in gyroscope. In your case with trusted strobe and test records then I would say this suggests there is an issue with your gyroscope. This is exactly why there is a calibration setting so you can correct the gyro so that future use of rpm is corrected in real time. For the numbers you mention you would use a calibration factor of 0.994 (33.3/33.5) Also, please be aware of RPMs other big feature which is the real time wow/flutter graph, while precise rpm is of course important it's the wow/flutter variation that is more audible to the ear, rpm is the only app which displays as an aid to helping you correct this. One final thing, please ensure that your iPhone is placed absolutely flat directly over the centre of the platter, if the spindle cannot be removed then use centre of a tape reel or similar to support it. I hope that helps, please get in touch. Cheers, Phil
Not clear that it’s a single trial
Won’t transfer
Response from developer
I received your message on the contact form but you didn’t leave your email address. If you go to the Info screen and tap the Restore button it will apply any upgrades made with the same AppleID. Let me know how you get on.
Garbage software
Upgrade don’t work
Response from developer
sorry you’re having trouble, this is most unusual, and is most likely a problem with the App Store itself. Sometimes the App Store doesn’t respond quick enough, if the purchase did go through you can go back to the Info screen and press the “Restore” button. You will never get charged twice by Apple, check your receipt emails. I hope that works, let me know how you get on.
Works well, but is obnoxious
Fine app, but wouldn’t download
