# Grooved: Turntable Calibration — One tap, off the record.

> Turntable speed calibration using device microphone and a record. (iPhone/iPad app by Ivan Mathy.)

- Source: https://appshunter.io/ios/app/grooved-turntable-calibration/id6479003866 (this page in markdown: same URL + `.md`)
- Developer: [Ivan Mathy](https://appshunter.io/developer/1332489186)
- Category: Utilities, Music
- Price: Free
- Rating: 4.90/5 from 124 App Store ratings · 16 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.2 · 4 MB
- Languages: English
- Released: 2024-05-27
- Data updated: 2026-08-31
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/grooved-turntable-calibration/id6479003866/reviews.md

## What is Grooved?

Grooved lets you calibrate the speed of your turntable by simply playing a record.

Maybe you're the lucky owner of one of those turntables with the little strobe thingie that already lets you calibrate the speed visually. I'm not gonna lie to you, if that's your situation then maybe Grooved isn't going to be super helpful but hey, who knows maybe you want to double check. On the other hand if, like me, you didn't think you'd ever need that feature and now realized how strangely complicated it is to get the right RPM set up without it, then this app is for you.

It truly is that simple: pick a song, play it out loud, tap the button. Grooved tells you if your turntable is running fast, slow, or perfectly. It uses your device's built-in microphone, so you don't need any additional equipment. 

If your turntable isn't running at the right speed, simply follow the manufacturer's instructions to adjust the speed, then check again with Grooved until just right. It's free, without ads nor limits, so you can keep checking and tweaking as long as you want to.

I wish I had more to say about it, but the truth is that Grooved is a very simple app that does one thing, and it does it very well. I hope you enjoy using it as much as I enjoyed making it for you.

## Key features

- One-tap turntable speed calibration
- Uses device microphone
- Analyzes playback speed
- Indicates fast, slow, or accurate speed
- Free to use

## Recent user reviews (10 of 16)

All indexed reviews: https://appshunter.io/ios/app/grooved-turntable-calibration/id6479003866/reviews.md

### 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.

### 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 — Great App

*2026-01-30, version 1.0*

Did exactly what was needed within 20 seconds of opening the app

### 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.

### 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.

### 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!

## Frequently asked questions about Grooved

### What does Grooved do?

Grooved is a utility app designed to help you calibrate the speed of your turntable. It uses your device's microphone to listen to a record playing on your turntable and determines if the playback speed is accurate.

### How do I use Grooved to calibrate my turntable?

Simply play a record on your turntable and hold your device's microphone near the speaker. Then, tap the button in the app. Grooved will analyze the sound and tell you if your turntable is running fast, slow, or at the correct RPM.

### Does Grooved require any special equipment?

No, Grooved is designed to work with your device's built-in microphone. You do not need any additional equipment to calibrate your turntable's speed with this app.

### Is Grooved free to use?

Yes, Grooved is completely free to use. It does not have any ads or limits, allowing you to check and tweak your turntable's speed as often as you need to.

### What if my turntable is not running at the correct speed?

If Grooved indicates your turntable is not running at the correct speed, you should consult your turntable's manufacturer instructions for how to adjust the speed. After making adjustments, you can use Grooved again to re-check the speed until it is accurate.

## Version history (last 1 release)

### 1.0 — 2024-05-28

No release notes.

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*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.*