# Arba2B vs World Atomic Week

The clearest difference is update cadence: Arba2B at every 2 months against World Atomic Week's every 8 months. Arba2B also leads on iOS requirement (12.0 vs 14.0). 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.

Arba2B ships an update every 2 months, World Atomic Week every 8 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Arba2B | World Atomic Week |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Size | 61 MB | 75 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ARBA WINE, TOO](https://appshunter.io/developer/1512898191) | [CampuZ OOO](https://appshunter.io/developer/1358580331) |

## What reviewers say

### Arba2B

[App page](https://appshunter.io/ios/app/arba2b/id1664014138)

**Features:** macOS Compatibility

**In-app purchases:** none


### World Atomic Week

[App page](https://appshunter.io/ios/app/world-atomic-week/id6444339662)

**In-app purchases:** none


## Frequently asked questions

### Is Arba2B free?

Arba2B is free to download, with no in-app purchases.

### Is World Atomic Week free?

World Atomic Week is free to download, with no in-app purchases.

### Do Arba2B or World Atomic Week have ads?

Neither Arba2B nor World Atomic Week shows ads.

### Which is updated more often, Arba2B or World Atomic Week?

Arba2B ships an update every 2 months, and World Atomic Week every 8 months. Most recently, Arba2B was updated on October 2, 2026 and World Atomic Week on October 6, 2026.

---

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