# Flag Solitaire by SZY vs Zero Clash

The clearest difference is in-app purchases: Flag Solitaire by SZY at none against Zero Clash's 1. Flag Solitaire by SZY also leads on iOS requirement (15.0 vs 17.0). Zero Clash's advantage is update cadence (daily vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Zero Clash sells 1 one-off in-app purchase. Flag Solitaire by SZY asks for nothing beyond the download.

Flag Solitaire by SZY ships an update every 3 weeks, Zero Clash daily. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Flag Solitaire by SZY | Zero Clash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (54 ratings)](https://appshunter.io/ios/app/flag-solitaire-by-szy/id478580129/reviews)** | — |
| Number of ratings | **54** | — |
| Positive reviews | 71.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Ad-supported | — |
| Size | 73 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shen Zhongyuan](https://appshunter.io/developer/385090494) | [Felix Wang](https://appshunter.io/developer/1889073752) |

## What reviewers say

### Flag Solitaire by SZY

[App page](https://appshunter.io/ios/app/flag-solitaire-by-szy/id478580129)

Engage in a unique solitaire game where you match flags to progress. Earn chances to test your knowledge of countries and their flags through timed quizzes. Learn country profiles, capitals, and locations while improving your flag recognition skills.

**Highlights:** Flag matching solitaire gameplay, Timed country flag quizzes, Country profile information, World map location integration, Leaderboard scores and achievements, Multi-language support

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

**In-app purchases:** none


### Zero Clash

[App page](https://appshunter.io/ios/app/zero-clash/id6761419430)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $0.99 | one-time |


## Frequently asked questions

### Is Flag Solitaire by SZY free?

Flag Solitaire by SZY is free to download, with no in-app purchases.

### Is Zero Clash free?

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

### Do Flag Solitaire by SZY or Zero Clash have ads?

Both Flag Solitaire by SZY and Zero Clash show ads.

### Which is updated more often, Flag Solitaire by SZY or Zero Clash?

Flag Solitaire by SZY ships an update every 3 weeks, and Zero Clash daily. Most recently, Flag Solitaire by SZY was updated on September 30, 2026 and Zero Clash on October 6, 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.*