# Big Math vs Curious World

The clearest difference is update cadence: Curious World at fortnightly against Big Math's every 11 months. Curious World also leads on device support (3 vs 1) and iOS requirement (13.0 vs 15.6). Big Math's advantage is price ($1.99 vs $3.99). On ads and in-app purchases there is nothing between them.

Big Math costs $1.99 and Curious World $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Big Math ships an update every 11 months, Curious World fortnightly. The most recent releases landed on October 19, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Big Math | Curious World |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Size | 18 MB | 2 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eaglet LLC](https://appshunter.io/developer/449193510) | [Be Nguyen](https://appshunter.io/developer/1491278288) |

## What reviewers say

### Big Math

[App page](https://appshunter.io/ios/app/big-math/id591862472)

**Features:** macOS Compatibility

**In-app purchases:** none


### Curious World

[App page](https://appshunter.io/ios/app/curious-world-preschool-learn/id1495127196)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Big Math free?

Big Math costs $1.99, with no in-app purchases.

### Is Curious World free?

Curious World costs $3.99, with no in-app purchases.

### Do Big Math or Curious World have ads?

Neither Big Math nor Curious World shows ads.

### Which is updated more often, Big Math or Curious World?

Big Math ships an update every 11 months, and Curious World fortnightly. Most recently, Big Math was updated on October 19, 2026 and Curious World on October 26, 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.*