# Shielding Tester vs GMCMap

Shielding Tester and GMCMap are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Shielding Tester ships an update every 7 months, GMCMap every 5 months. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Shielding Tester | GMCMap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (19 ratings)](https://appshunter.io/ios/app/gmcmap/id6459882680/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 13 MB | 27 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Velter KZ](https://appshunter.io/developer/1781938634) | [GQ Electronics LLC](https://appshunter.io/developer/1379843069) |

## What reviewers say

### Shielding Tester

[App page](https://appshunter.io/ios/app/shielding-tester/id6444835317)

**Features:** Vision Pro support

**In-app purchases:** none


### GMCMap

[App page](https://appshunter.io/ios/app/gmcmap/id6459882680)

This app provides a real-time radiation map of the world, displaying current radiation levels from monitoring stations globally. It features an interactive map, historical data, and trend analysis for comprehensive environmental vigilance.

**Highlights:** Real-time radiation data, Global coverage map, Interactive map interface, Historical data and trends, Mobile convenience

**In-app purchases:** none


## Frequently asked questions

### Is Shielding Tester free?

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

### Is GMCMap free?

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

### Do Shielding Tester or GMCMap have ads?

Neither Shielding Tester nor GMCMap shows ads.

### Which is updated more often, Shielding Tester or GMCMap?

Shielding Tester ships an update every 7 months, and GMCMap every 5 months. Most recently, Shielding Tester was updated on September 9, 2026 and GMCMap on September 22, 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.*