# Shock Math Calculator vs World Explorer Pro

The clearest difference is in-app purchases: Shock Math Calculator at none against World Explorer Pro's 1. World Explorer Pro's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. World Explorer Pro sells 1 one-off in-app purchase. Shock Math Calculator asks for nothing beyond the download.

Shock Math Calculator ships an update every 3 weeks, World Explorer Pro weekly. The most recent releases landed on October 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Shock Math Calculator | World Explorer Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 5 MB | 9 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Gregory Manley](https://appshunter.io/developer/1650623300) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Shock Math Calculator

[App page](https://appshunter.io/ios/app/shock-math-calculator/id6443923018)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### World Explorer Pro

[App page](https://appshunter.io/ios/app/world-explorer-pro/id6746413810)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Feature | $0.99 | one-time |


## Frequently asked questions

### Is Shock Math Calculator free?

Shock Math Calculator is free to download, with no in-app purchases.

### Is World Explorer Pro free?

World Explorer Pro is free to download, with in-app purchases available.

### Do Shock Math Calculator or World Explorer Pro have ads?

Neither Shock Math Calculator nor World Explorer Pro shows ads.

### Which is updated more often, Shock Math Calculator or World Explorer Pro?

Shock Math Calculator ships an update every 3 weeks, and World Explorer Pro weekly. Most recently, Shock Math Calculator was updated on October 5, 2026 and World Explorer Pro on September 28, 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.*