# 1A2B Fun! vs 飄天文學

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

Both are free to download. 1A2B Fun! sells 1 one-off in-app purchase. 飄天文學 asks for nothing beyond the download.

1A2B Fun! ships an update every 3 months, 飄天文學 weekly. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 1A2B Fun! | 飄天文學 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/1a2b-fun-logic-mastermind/id1459347669/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 29 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ming-Ta Yang](https://appshunter.io/developer/1459347668) | [Diem Quynh Le Thi](https://appshunter.io/developer/1549495688) |

## 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 |


### 飄天文學

[App page](https://appshunter.io/ios/app/id6695763083)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 1A2B Fun! free?

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

### Is 飄天文學 free?

飄天文學 is free to download, with no in-app purchases.

### Do 1A2B Fun! or 飄天文學 have ads?

1A2B Fun! shows ads; 飄天文學 does not.

### Which is updated more often, 1A2B Fun! or 飄天文學?

1A2B Fun! ships an update every 3 months, and 飄天文學 weekly. Most recently, 1A2B Fun! was updated on October 24, 2026 and 飄天文學 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.*