# Flags vs CatStack!

The clearest difference is in-app purchases: CatStack! at none against Flags's 7. CatStack! also leads on ads (none vs shown). Flags's advantage is iOS requirement (15.1 vs 18.5). On price and device support there is nothing between them.

Both are free to download. Flags sells 7 in-app purchases, starting at $0.69 per 7 days. CatStack! asks for nothing beyond the download.

## The numbers

| Metric | Flags | CatStack! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (35 ratings)](https://appshunter.io/ios/app/flags-world-geography-quiz/id6737687944/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 97.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 78 MB | 42 MB |
| Requires iOS | **15.1** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yauhen Siarko](https://appshunter.io/developer/1605937454) | [TAKURO INOUE](https://appshunter.io/developer/1806841917) |

## What reviewers say

### Flags

[App page](https://appshunter.io/ios/app/flags-world-geography-quiz/id6737687944)

Test your knowledge of world flags, capitals, and maps with this engaging offline quiz game. Featuring three difficulty levels, it's designed for both beginners and trivia masters to learn and compete. Enjoy educational fun and challenge friends anytime, anywhere.

**Highlights:** Learn and guess country flags, Identify capital cities, Master world maps, Three difficulty levels, Offline play, Internal US states quiz, Compete with friends

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $0.69 | per 7 days |
| Premium Monthly | $1.69 | per month |
| Premium Annual | $9.99 | per year |
| 2 000 | $0.39 | one-time |
| 5 000 | $0.99 | one-time |
| 25 000 | $1.99 | one-time |
| Lifetime Premium | $17.99 | one-time |

**What reviewers like**

- 👍 Fun learning experience
- 🧠 Educational and informative
- 🎮 Gamified and engaging
- ✨ Neat and well-designed interface
- 👨‍👩‍👧‍👦 Great for kids and family

**What reviewers complain about**

-  busy App can be busy
- ❓ Hint system broken in quizzes

**Reported bugs**

- Blank screen when starting challenge
- Daily rewards can be collected multiple times by spamming claim button

**Requested features**

- Evaluate user usage for busy interface
- Improve hint system in quizzes (provide capital or language)
- Consider global ranking feature
- Add notifications for daily reminders


### CatStack!

[App page](https://appshunter.io/ios/app/catstack/id6747741193)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flags free?

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

### Is CatStack! free?

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

### Do Flags or CatStack! have ads?

Flags shows ads; CatStack! does not.

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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.*