# World Flags Trainer vs Square of a Binomial Math

The clearest difference is in-app purchases: Square of a Binomial Math at none against World Flags Trainer's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. World Flags Trainer sells 1 one-off in-app purchase. Square of a Binomial Math asks for nothing beyond the download.

## The numbers

| Metric | World Flags Trainer | Square of a Binomial Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (147 ratings)](https://appshunter.io/ios/app/world-flags-trainer/id1583038202/reviews)** | — |
| Number of ratings | **147** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 96 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Philipp Straub](https://appshunter.io/developer/1573167056) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### World Flags Trainer

[App page](https://appshunter.io/ios/app/world-flags-trainer/id1583038202)

Learn world flags effectively with an adaptive spaced-repetition system. Practice through multiple choice or self-assessment, focusing on active recall for long-term retention. Master flags by continent with dual direction learning and track progress with structured knowledge tests.

**Highlights:** Adaptive spaced-repetition learning, Multiple choice and self-assessment modes, Flag to Country and Country to Flag practice, Categorization by continent, Structured knowledge tests with medals, Adjustable categories and question types, Browse and search flashcards

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $4.99 | one-time |


### Square of a Binomial Math

[App page](https://appshunter.io/ios/app/square-of-a-binomial-math/id6504436253)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Flags Trainer free?

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

### Is Square of a Binomial Math free?

Square of a Binomial Math is free to download, with no in-app purchases.

### Do World Flags Trainer or Square of a Binomial Math have ads?

Neither World Flags Trainer nor Square of a Binomial Math shows ads.

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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.*