# Pole Detector vs Kelch

The clearest difference is update cadence: Pole Detector at every 10 days against Kelch's every 2 months. Pole Detector also leads on iOS requirement (11.0 vs 15.3). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pole Detector ships an update every 10 days, Kelch every 2 months. The most recent releases landed on September 26, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Pole Detector | Kelch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/pole-detector/id1445904845/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free | — |
| Size | 24 MB | 32 MB |
| Requires iOS | **11.0** | 15.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Webcraft AG](https://appshunter.io/developer/1445904844) | [Kelch-MES GmbH](https://appshunter.io/developer/1789752730) |

## What reviewers say

### Pole Detector

[App page](https://appshunter.io/ios/app/pole-detector/id1445904845)

Easily identify the north and south poles of a magnet using your smartphone's Teslameter. This tool is ideal for scientific experiments or any production involving magnets.

**Highlights:** Identify north and south magnetic poles, Uses smartphone Teslameter, Assists with magnet experiments, Useful for magnet production

**Features:** macOS Compatibility

**In-app purchases:** none


### Kelch

[App page](https://appshunter.io/ios/app/kelch-bt/id6740400960)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pole Detector free?

Pole Detector is free to download, with no in-app purchases.

### Is Kelch free?

Kelch is free to download, with no in-app purchases.

### Do Pole Detector or Kelch have ads?

Neither Pole Detector nor Kelch shows ads.

### Which is updated more often, Pole Detector or Kelch?

Pole Detector ships an update every 10 days, and Kelch every 2 months. Most recently, Pole Detector was updated on September 26, 2026 and Kelch on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*