Only 10 tests. Just enough to get you in trouble. – RPM - Turntable Speed Accuracy Review

App only lets you do 10 tests (which it counts ANY detection of movement as a test) before requiring you to purchase the Pro version. I can’t review it for accuracy, but all the niceties are Pro version only. All the trial does is test RPM and wow/flutter, which, if it’s accurate, is pretty good, but I doubt it takes phone weight/case weight into account since it never asks. Also, In the trial version, there’s no green light to tell you you’re in the sweet spot, but you don’t really need it, just like this app. Print out a stroboscope and use one of the several strobe apps that lets you select frequency (60Hz in US, 50Hz elsewhere in case you’re wondering). If I was relying ONLY on this app, I’d be screwed because right now, my TT is way too slow, thanks to this app making me think I should play with the speed.
Review by letmespeakmymind on RPM - Turntable Speed Accuracy.