# 1A2B Fun! vs 解答之星

The clearest difference is ads: 解答之星 at none against 1A2B Fun!'s shown. 解答之星 also leads on update cadence (weekly vs every 3 months) and iOS requirement (11.0 vs 13.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 1A2B Fun! sells 1 one-off in-app purchase and 解答之星 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

1A2B Fun! ships an update every 3 months, 解答之星 weekly. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 1A2B Fun! | 解答之星 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/1a2b-fun-logic-mastermind/id1459347669/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 14 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Ming-Ta Yang](https://appshunter.io/developer/1459347668) | [CHIA-WEN HUANG](https://appshunter.io/developer/1488572322) |

## What reviewers say

### 1A2B Fun!

[App page](https://appshunter.io/ios/app/1a2b-fun-logic-mastermind/id1459347669)

Engage in classic logic puzzles with a Mastermind mode and a challenging 5-digit option. Compete with friends to achieve top ranks and test your deductive reasoning skills in this casual brain teaser.

**Highlights:** Classic Mastermind logic game, 5-digit challenge mode, Rankings for friend competition, Casual brain teaser, Deductive reasoning puzzles

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Bottom Ad | $0.99 | one-time |


### 解答之星

[App page](https://appshunter.io/ios/app/id1502377924)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 贊助開發者並且清除廣告 | $0.99 | one-time |


## Frequently asked questions

### Is 1A2B Fun! free?

1A2B Fun! is free to download, with in-app purchases available.

### Is 解答之星 free?

解答之星 is free to download, with in-app purchases available.

### Do 1A2B Fun! or 解答之星 have ads?

1A2B Fun! shows ads; 解答之星 does not.

### Which is updated more often, 1A2B Fun! or 解答之星?

1A2B Fun! ships an update every 3 months, and 解答之星 weekly. Most recently, 1A2B Fun! was updated on October 4, 2026 and 解答之星 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.*