# BRAIN 99 vs 1A2B 猜數字

The clearest difference is ads: 1A2B 猜數字 at none against BRAIN 99's shown. BRAIN 99's advantage is update cadence (every 8 days vs every 4 months) and iOS requirement (12.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. BRAIN 99 sells 10 one-off in-app purchases and 1A2B 猜數字 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

BRAIN 99 ships an update every 8 days, 1A2B 猜數字 every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | BRAIN 99 | 1A2B 猜數字 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-99-quick-brain-battle/id6456751981/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 311 MB | 24 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [XOGAMES Inc](https://appshunter.io/developer/1133102824) | [Yi-Chun Yu](https://appshunter.io/developer/1822792140) |

## What reviewers say

### BRAIN 99

[App page](https://appshunter.io/ios/app/brain-99-quick-brain-battle/id6456751981)

Engage in real-time brain battles with friends and family. This game offers over 20 challenges to activate different parts of your brain, improving memory, observation, and calculation skills. Compete for rewards and titles to boost your IQ.

**Highlights:** Real-time multiplayer brain battles, Over 20 brain-activating challenges, Improves memory, observation, analysis, focus, calculation, Competitive rankings and rewards, Intuitive gameplay for all ages, Unlock new challenges and titles

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coins x1100 | $1.99 | one-time |
| Coins x2500 | $3.99 | one-time |
| Starter Pack Lv.2 | $3.99 | one-time |
| No Ads | $5.99 | one-time |
| Starter Pack | $5.99 | one-time |
| Coins x7500 | $7.99 | one-time |
| Starter Pack All | $7.99 | one-time |
| Coins x14900 | $14.99 | one-time |
| Coins x27000 | $17.99 | one-time |
| Coins x50000 | $22.99 | one-time |


### 1A2B 猜數字

[App page](https://appshunter.io/ios/app/1a2b-number-guessing-game/id6749831242)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 新手挑戰包 | $0.99 | one-time |
| 高手挑戰包 | $1.99 | one-time |
| 終極挑戰包 | $3.99 | one-time |


## Frequently asked questions

### Is BRAIN 99 free?

BRAIN 99 is free to download, with in-app purchases available.

### Is 1A2B 猜數字 free?

1A2B 猜數字 is free to download, with in-app purchases available.

### Do BRAIN 99 or 1A2B 猜數字 have ads?

BRAIN 99 shows ads; 1A2B 猜數字 does not.

### Which is updated more often, BRAIN 99 or 1A2B 猜數字?

BRAIN 99 ships an update every 8 days, and 1A2B 猜數字 every 4 months. Most recently, BRAIN 99 was updated on November 3, 2026 and 1A2B 猜數字 on October 30, 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.*