True Note vs Wow and Flutter Turntable RPM

Use True Note to test a record player to see if it's playing at the correct speed. Here's how: 1. Download the True Note app and open it 2. Print and cut out the included turntable strobe disc 3. Place the strobe disc on your record player and start it at the 33 1/3 RPM speed 4. Tap "START" in the True Note app and shine the flashing LED light from your iOS device onto the strobe disc If your record player is playing at the correct speed, you should be able to make out the individual lines on the strobe disc - and they should appear to remain in the same position (not drifting in one direction). Many record players have an adjustable speed and can be calibrated with the help of True Note. Perhaps you're shopping for a used record player? The True Note strobe disc is small enough that you can fold it in half to keep in your wallet or iPhone case - ready to use when you're at a thrift store or garage sale and want to make sure the turntable you're considering buying works properly.

Are you sure your turntable is perfectly calibrated? Even high-end audio systems lose their true sound with a 0.1 RPM deviation. Wow and Flutter is a professional-grade calibration tool designed for audiophiles. Simply place your phone on the platter. Using strictly the device's built-in gyroscope (no cameras, no vision AI, 100% offline), it measures your turntable's rotational speed and microscopic variations (Wow and Flutter) up to two decimal places. Experience the heavy brutalist analog VU meter interface and feel the haptic feedback when you hit the perfect 33.33 RPM. FREE FEATURES: - 33 & 45 RPM measurement - Real-time VU meter with needle animation - Wow & Flutter percentage display - Haptic feedback at target lock - 5 free measurement sessions UNLOCK PRO ($6.99 one-time): - Unlimited measurement sessions - 16 & 78 RPM speed modes - Real-time RPM time-series graph - W&F quality grade badge (Excellent/Good/Fair/Poor) - Save measurements & full history log - RPM calibration offset tool Terms of Use: https://prizmchain.github.io/wnf-terms-of-service.html Privacy Policy: https://prizmchain.github.io/wnf-privacy-policy.html