# HitOrGuard vs Concentration Game

The clearest difference is ads: HitOrGuard at none against Concentration Game's shown. HitOrGuard also leads on iOS requirement (13.0 vs 15.0). Concentration Game's advantage is update cadence (every 5 months vs every 38 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HitOrGuard ships an update every 38 months, Concentration Game every 5 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | HitOrGuard | Concentration Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (18 ratings)](https://appshunter.io/ios/app/concentration-game-solo/id1616382609/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Every 5 months** |
| Monetization | — | Ad-supported |
| Size | 5 MB | 103 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [Hirokazu Uno](https://appshunter.io/developer/1570016990) |

## What reviewers say

### HitOrGuard

[App page](https://appshunter.io/ios/app/hitorguard/id687675702)

**Features:** macOS Compatibility

**In-app purchases:** none


### Concentration Game

[App page](https://appshunter.io/ios/app/concentration-game-solo/id1616382609)

A classic single-player card game where you match pairs of numbers. The challenge increases with a decreasing time limit as you advance through levels. Enjoy a brain-training experience with this solo card game.

**Highlights:** Single-player card game, Match numbered pairs, Time limit decreases with level, Brain training, Classic card game mechanics

**In-app purchases:** none


## Frequently asked questions

### Is HitOrGuard free?

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

### Is Concentration Game free?

Concentration Game is free to download, with no in-app purchases.

### Do HitOrGuard or Concentration Game have ads?

Concentration Game shows ads; HitOrGuard does not.

### Which is updated more often, HitOrGuard or Concentration Game?

HitOrGuard ships an update every 38 months, and Concentration Game every 5 months. Most recently, HitOrGuard was updated on October 14, 2026 and Concentration Game on October 24, 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.*