# Turns Counter (Magnetic) — for Coil Winding Machine

> Counts coil winding turns using smartphone magnetic sensor. (iPhone/iPad app by Dmitriy Kharutskiy.)

- Source: https://appshunter.io/ios/app/turns-counter-magnetic/id1463609810 (this page in markdown: same URL + `.md`)
- Developer: [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 4.80/5 from 26 App Store ratings · 14 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 1 MB
- Languages: Dutch, German (Germany), Russian, Swedish, European Spanish, American English, Italian, Japanese, Czech, Brazilian Portuguese and 1 more
- Released: 2019-05-20
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/turns-counter-magnetic/id1463609810/reviews.md

## What is Turns Counter (Magnetic)?

The app is designed to calculate the number of turns when winding an inductor (inductance coil). A MAGNET SHOULD BE ATTACHED TO THE ROTATING PART. The app (by means of the built-in smartphone magnetic field sensor) determines the number of rotations of the magnet and, therefore, the number of coil turns. It is also possible to determine the rotation of a smartphone without using the magnet (e.g., when winding a large coil).

BEFORE TAKING ANY MEASUREMENTS, IT IS NECESSARY TO CALIBRATE THE MAGNETOMETER. To do this, you need to put the smartphone at the selected place (where measurements will be taken), make sure that there is no magnet nearby, and press the TOP "0" button.

To reset the number of turns, press the DOWN "0" button TWO TIMES.

• Selection of the magnetometer axis.
• Sensitivity setting (threshold level).
• Alert on reaching the required number of turns.
• Notification about each addition of a certain number of turns. For example, a beep after adding every 15 turns. To do this, click on the button with the bell and write down the line "+15!!" (without spaces). The number of exclamation marks ("!") is used to select the sound signal. Can be from 0 to 5 exclamation marks.
• Countdown. Write a negative number for the countdown.
• A photo with the result of the measurement written on it.
• Maximum rotation speed: 1000 rpm (16 Hz). AVOID HIGH ROTATIONAL SPEEDS, BECAUSE THE MAGNET CAN COME OFF AND BREAK THE SMARTPHONE.
• Measurement of rotation speed (0-1000 RPM, ±2%).

DO NOT USE VERY LARGE MAGNETS. THEY ARE VERY INCONVENIENT TO USE AND CAN BREAK ANYTHING OR INJURE YOU.

Sometimes the iPhone's speakers can interfere with magnetometer measurements. Therefore, at revolutions over 400 rpm, the sound that sounds after each revolution is turned off.

## Key features

- Magnetometer rotation detection
- Rotation counting without magnet
- Customizable turn alerts
- Sensitivity adjustment
- Rotation speed measurement
- Countdown timer

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full version | $1.99 | one-time |


## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/turns-counter-magnetic/id1463609810/reviews.md

### 1/5 — Ужас

*2026-01-08*

Почему все платно??? Невозможно нормально намотать!

**Developer response:** Можно считать витки и в бесплатной версии. Не понятно почему для Вас это невозможно. А когда Вы используете абсолютно бесплатное приложение, то значит товаром являетесь Вы!

### 5/5 — Awesome

*2025-10-07*

One of the best & most useful apps I have ever used. Using on coil winding machine with faulty counter. This makes it very easy.

### 5/5 — Knitting

*2025-02-01*

This is wonderful for knitting machines. And the creators were helpful
when I asked for help.

### 5/5 — So many uses!

*2024-03-14*

This is so useful well beyond what it was designed for. You will never know how helpful this is for me. I have a panel knitting machine with no counter. This is a game changer. I just put the magnet on the back of the carriage and my phone behind the middle of the board and it accurately counts my knit rows for me. Thanks so much.

### 5/5 — Coil turns smart phone counter App.

*2023-11-28*

So far this app does all what I need and I like it .

### 5/5 — Coil wire windings counter with smartphone.

*2023-01-07, version 1.1.2*

Found this counter app.read application. Put small magnet on the drill chuck, under   Chuck install smartphone. Turn on drill and counter  works well. Phone start count turns. Yes, this application was helpful and easy  to use.

### 4/5 — Use it for accounting sock rows on my circular sock machine

*2022-06-21*

Yea Yea yea

### 5/5 — Clever

*2022-01-13, version 1.0*

Best app ever !!!!
Crazy you can do that and exploit the full functionnality of the phone
Would be nice to turn it into a tachometer

### 5/5 — Electric motor repair

*2021-10-16*

This app will be a good back up for our machines that makes the coils !

### 5/5 — Perfect for my little project!

*2021-09-16*

Exellent app for my temp coil winding project. Might end up being there longer if my old counter can not be repaired.

Thanks!

## Frequently asked questions about Turns Counter (Magnetic)

### How does Turns Counter (Magnetic) work?

Turns Counter (Magnetic) utilizes your smartphone's built-in magnetic field sensor to detect rotations. You can attach a magnet to the rotating part or use the app without a magnet for larger coils.

### Do I need a magnet for Turns Counter (Magnetic)?

While attaching a magnet to the rotating part is recommended for optimal accuracy, the app also supports rotation detection without a magnet, which can be useful for winding larger coils.

### How do I calibrate the magnetometer in Turns Counter (Magnetic)?

Before taking measurements, calibrate the magnetometer by placing your smartphone in the intended measurement area, ensuring no magnet is nearby, and pressing the top '0' button.

### Can Turns Counter (Magnetic) alert me when I reach a certain number of turns?

Yes, the app features an alert system that can notify you upon reaching a required number of turns. You can also set notifications for every addition of a specific number of turns, like every 15 turns.

### What is the maximum rotation speed supported by Turns Counter (Magnetic)?

The app supports a maximum rotation speed of 1000 RPM (16 Hz). It is advised to avoid excessively high rotational speeds to prevent the magnet from detaching and potentially damaging your smartphone.

### Does Turns Counter (Magnetic) have ads?

No, this application is ad-free, allowing for an uninterrupted user experience during your coil winding tasks.

### What devices is Turns Counter (Magnetic) compatible with?

Turns Counter (Magnetic) is available for iPhones and iPods, utilizing their internal magnetic field sensors for its functionality.

### How often is Turns Counter (Magnetic) updated?

The latest version of Turns Counter (Magnetic) is 1.2.3, last updated on February 17, 2026. This indicates a commitment to ongoing development and improvements.

## Version history (last 5 releases)

### 1.2.3 — 2026-02-17

• Bugs fixed.

### 1.2.2 — 2025-10-30

• Minor changes in text design.

### 1.2.1 — 2025-04-25

• Small improvements.

### 1.2 — 2023-05-10

• Notification about each addition of a certain number of turns. For example, a beep after adding every 15 turns.

### 1.1.2 — 2022-12-22

• Fixed an error in large text mode.

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All apps by Dmitriy Kharutskiy: https://appshunter.io/developer/817385891

## Related topics

[magnetic](https://appshunter.io/ios/topics/magnetic) · [coil](https://appshunter.io/ios/topics/coil)

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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 2026-08-24.*