# Concentration Game, 9Bubbles vs Brain training game/Tap Number

The clearest difference is review sentiment: Brain training game/Tap Number at 100% against Concentration Game, 9Bubbles's 55%. Concentration Game, 9Bubbles's advantage is rating (4.4 vs 1.0) and update cadence (every 10 days vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Concentration Game, 9Bubbles sells 4 one-off in-app purchases and Brain training game/Tap Number sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Concentration Game, 9Bubbles holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Concentration Game, 9Bubbles has 46 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 55% of Concentration Game, 9Bubbles's written reviews are positive against 100% of Brain training game/Tap Number's, so the app with the better star average is not the one people write more warmly about.

Concentration Game, 9Bubbles ships an update every 10 days, Brain training game/Tap Number every 2 months. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Concentration Game, 9Bubbles | Brain training game/Tap Number |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (46 ratings)](https://appshunter.io/ios/app/concentration-game-9bubbles/id1366569537/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/brain-training-gametap-number/id1580661603/reviews) |
| Number of ratings | **46** | 1 |
| Positive reviews | 54.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 43 MB | 56 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lisfee, Inc.](https://appshunter.io/developer/1146331015) | [ryo fujise](https://appshunter.io/developer/1580661605) |

## What reviewers say

### Concentration Game, 9Bubbles

[App page](https://appshunter.io/ios/app/concentration-game-9bubbles/id1366569537)

This game challenges your memory and concentration by requiring you to memorize and recall the colors and positions of bubbles. Designed to improve cognitive skills and creativity, it offers increasing difficulty across 28 stages.

**Highlights:** Memorize colors and positions, Burst bubbles based on memory, Improves memory power, Enhances creative ability, 28 challenging stages, Trains the right side of the brain

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FEEL GOOD | $1.99 | one-time |
| TRY STAGE28 | $1.99 | one-time |
| 10 LIFEs | $1.99 | one-time |
| DELETE ADs | $1.99 | one-time |


### Brain training game/Tap Number

[App page](https://appshunter.io/ios/app/brain-training-gametap-number/id1580661603)

A simple yet addictive game that tests your reflexes by tapping numbers or alphabets in sequential order. With increasing grid sizes and difficulty levels, it's perfect for quick brain training and boosting concentration.

**Highlights:** Number and Alphabet Modes, Adjustable Difficulty Levels, Global Ranking System, Quick Play Option, Daily Brain Training, Boosts Reflexes and Focus

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove in-app advertisements. | $0.99 | per month |


## Frequently asked questions

### Is Concentration Game, 9Bubbles free?

Concentration Game, 9Bubbles is free to download, with in-app purchases available.

### Is Brain training game/Tap Number free?

Brain training game/Tap Number is free to download, with in-app purchases available.

### Which has better reviews, Concentration Game, 9Bubbles or Brain training game/Tap Number?

Concentration Game, 9Bubbles is rated higher. Concentration Game, 9Bubbles averages 4.4 out of 5 from 46 ratings, while Brain training game/Tap Number averages 1.0 from 1 ratings.

### Do Concentration Game, 9Bubbles or Brain training game/Tap Number have ads?

Both Concentration Game, 9Bubbles and Brain training game/Tap Number show ads.

### Which is updated more often, Concentration Game, 9Bubbles or Brain training game/Tap Number?

Concentration Game, 9Bubbles ships an update every 10 days, and Brain training game/Tap Number every 2 months. Most recently, Concentration Game, 9Bubbles was updated on October 22, 2026 and Brain training game/Tap Number on October 17, 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.*