# The Math Trainer vs World

The clearest difference is in-app purchases: The Math Trainer at none against World's 2. The Math Trainer also leads on ads (none vs shown) and update cadence (every 11 days vs every 2 months). World's advantage is iOS requirement (15.6 vs 17.6). On price and device support there is nothing between them.

Both are free to download. World sells 2 in-app purchases, starting at $1.99 per month. The Math Trainer asks for nothing beyond the download.

The Math Trainer ships an update every 11 days, World every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | The Math Trainer | World |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Every 2 months |
| Size | 5 MB | 147 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jose Antonio Quiles](https://appshunter.io/developer/821531350) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## What reviewers say

### The Math Trainer

[App page](https://appshunter.io/ios/app/the-math-trainer/id6740773081)

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

**In-app purchases:** none


### World

[App page](https://appshunter.io/ios/app/world-flags/id6758343689)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| flags_by_oliva_subscription | $1.99 | per month |
| flags_by_oliva_donation | $1.99 | one-time |


## Frequently asked questions

### Is The Math Trainer free?

The Math Trainer is free to download, with no in-app purchases.

### Is World free?

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

### Do The Math Trainer or World have ads?

World shows ads; The Math Trainer does not.

### Which is updated more often, The Math Trainer or World?

The Math Trainer ships an update every 11 days, and World every 2 months. Most recently, The Math Trainer was updated on October 30, 2026 and World on October 31, 2026.

---

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