# Grooved: Turntable Calibration — user reviews > 16 indexed App Store user reviews of Grooved by Ivan Mathy, rated 4.90/5 from 124 ratings. - Source: https://appshunter.io/ios/app/grooved-turntable-calibration/id6479003866/reviews - App overview in markdown: https://appshunter.io/ios/app/grooved-turntable-calibration/id6479003866.md - Rating breakdown: 5★ 118 · 4★ 3 · 3★ 1 · 2★ 1 · 1★ 1 ## Newest reviews (3 of 16) ### 5/5 — Does as it says, good enough for you *2024-05-30, version 1.0* Works pretty well. It’s not the most sensitive measurement, but it’s good to the ~1.0% or so. In my first 10 measurements most showed 33-1/3 RPM (perfect) but a couple showed +/- 0.5% (all on the same song, hadn’t touched anything). That is not even a critique though - +/-0.5% is a difference of less than 10 seconds in a 30 min playback and an imperceptible shift in pitch. That said, I’d still like to see a longer sample analyzed down to the 0.1% or so and some measurement of wow and flutter. But yeah, this is definitely good enough for all but the most psychotic audiophile. ### 5/5 — Cool *2024-05-30, version 1.0* Really cool!!! ### 5/5 — Best and easiest to use *2024-05-29, version 1.0* This app is so easy to use and tells you almost instantly how fast or slow your turntable is running. My Technics 100C came out bang on 33 1/3, as expected for a direct drive. My Rega Planar 1 came out 33.26rpm which isn’t unexpected for a belt drive. The only thing it doesn’t do is wow and flutter measurements which some other apps do. But for a quick seed check it’s unbeatable. ## Most critical reviews (10 lowest-rated) ### 1/5 — Inaccurate *2025-09-01, version 1.0* I have three turntables and the app shows them all to be running around 1% too fast. One has a quartz lock adjuster and when I slow it down it increases error showing it slower rather than faster. I don’t think it’s accurate and therefore of limited actual use. ### 3/5 — Inaccurate results *2025-01-19, version 1.0* This app needs to show accurate results because my record player sounds slow Maybe it’s right I don’t know ### 4/5 — Massively inconsistent *2026-03-14, version 1.0* It’s a cool concept for setting pitch but the issue is within the app’s processing. Simple test, play a record, set the phone down, start analysis. Repeat the recording process 10 times and watch how the readings fluctuate over a band of about 1/2 an rpm. So one second its 33.00 and the next its 33.50, which is it?? Most likely neither. As you may have guessed it’s about as useful as a knife made from feathers. ### 5/5 — Excellent App *2026-07-27, version 1.0* Seriously. A game changer. Just set up my turntable to perfection. ### 5/5 — Easy and accurate *2026-05-20, version 1.0* Much better than other ones I’ve tried where you have to put your phone on the turntable. ### 5/5 — Great App *2026-01-30, version 1.0* Did exactly what was needed within 20 seconds of opening the app ### 5/5 — Great Idea! Exactly what I needed. *2025-08-10, version 1.0* I wanted to confirm whether my old Linn Sondek turntable was playing at the right speed after some maintenance. Half I found this! ### 5/5 — Great idea well executed. *2025-06-01, version 1.0* This app works perfectly. Had my turntable back in check in no time. No strobe lights, no printing discs and no ads. Many thanks to the dev. ### 5/5 — Just the Job *2025-05-22, version 1.0* Purchased a new turntable Rega 3, wanted to check speed, HiFix told me about this app, it’s very accurate and so easy to use and best of all it’s free, so a big thanks to the developer ### 5/5 — Fantastic *2025-05-20, version 1.0* Fabulous little app that does its job perfectly. ## Most praised reviews (3 highest-rated) ### 5/5 — Great app *2025-02-14, version 1.0* This app was indispensable for getting my turntable speed dialed in precisely. I used “Thriller” for reference and was able to get it dead-on 33 1/3. Great stuff! ### 5/5 — Seems brilliant and easy to use *2024-12-30, version 1.0* The disclaimer is I’ve nothing lease really to compare the results apart from the rpm app , but this shows similar results and is super easy to use . ### 5/5 — great app! *2024-09-27, version 1.0* does exactly what it says, no more and no less— big ty for this one not sure what I was gonna do otherwise! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*