# Radioactivity vs Xplore Hiroshima

The clearest difference is price: Xplore Hiroshima at Free against Radioactivity's $0.99. Xplore Hiroshima also leads on device support (3 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Xplore Hiroshima is free to download; Radioactivity costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Radioactivity ships an update every 36 months, Xplore Hiroshima every 20 months. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Radioactivity | Xplore Hiroshima |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/xplore-hiroshima/id1523053303/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 20 months** |
| Monetization | — | Free |
| Size | 52 MB | 569 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [TIMELOOPER INC](https://appshunter.io/developer/1198864036) |

## What reviewers say

### Radioactivity

[App page](https://appshunter.io/ios/app/radioactivity-physics/id1136130171)

**Features:** macOS Compatibility

**In-app purchases:** none


### Xplore Hiroshima

[App page](https://appshunter.io/ios/app/xplore-hiroshima/id1523053303)

Explore Hiroshima's history through interactive maps, 3D models, and survivor testimonies. Understand the impact of the atomic bombing and learn from the resilience of its people.

**Highlights:** Interactive historical maps, 3D models of bomb and dome, Survivor testimonies with art, Video footage from the bombing, Guided tour of Peace Park sites, Toggle between past and present views

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Radioactivity free?

Radioactivity costs $0.99, with no in-app purchases.

### Is Xplore Hiroshima free?

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

### Do Radioactivity or Xplore Hiroshima have ads?

Neither Radioactivity nor Xplore Hiroshima shows ads.

### Which is updated more often, Radioactivity or Xplore Hiroshima?

Radioactivity ships an update every 36 months, and Xplore Hiroshima every 20 months. Most recently, Radioactivity was updated on October 3, 2026 and Xplore Hiroshima on October 5, 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.*