# PosterMap vs Metal Detector. Magnetometer

The clearest difference is in-app purchases: Metal Detector. Magnetometer at none against PosterMap's 3. PosterMap's advantage is update cadence (every 9 days vs every 3 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PosterMap sells 3 in-app purchases, starting at $4.99 per month. Metal Detector. Magnetometer asks for nothing beyond the download.

PosterMap ships an update every 9 days, Metal Detector. Magnetometer every 3 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PosterMap | Metal Detector. Magnetometer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 3 months |
| Size | 98 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ali Goktas](https://appshunter.io/developer/1604433091) | [Alejandro Cordon](https://appshunter.io/developer/553178609) |

## What reviewers say

### PosterMap

[App page](https://appshunter.io/ios/app/postermap-custom-map-maker/id6760111420)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $19.99 | per year |
| Lifetime Pro Unlock | $39.99 | one-time |


### Metal Detector. Magnetometer

[App page](https://appshunter.io/ios/app/metal-detector-magnetometer/id6761862180)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PosterMap free?

PosterMap is free to download, with in-app purchases available.

### Is Metal Detector. Magnetometer free?

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

### Do PosterMap or Metal Detector. Magnetometer have ads?

Both PosterMap and Metal Detector. Magnetometer show ads.

### Which is updated more often, PosterMap or Metal Detector. Magnetometer?

PosterMap ships an update every 9 days, and Metal Detector. Magnetometer every 3 months. Most recently, PosterMap was updated on September 17, 2026 and Metal Detector. Magnetometer on September 10, 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.*