# Category Topic vs Speed Card Duel

The clearest difference is update cadence: Speed Card Duel at daily against Category Topic's every 8 days. Category Topic's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Category Topic sells 10 one-off in-app purchases and Speed Card Duel sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Category Topic ships an update every 8 days, Speed Card Duel daily. Both last shipped on November 10, 2026.

## The numbers

| Metric | Category Topic | Speed Card Duel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (185 ratings)](https://appshunter.io/ios/app/category-topic-mahjong-sort/id6794221849/reviews)** | — |
| Number of ratings | **185** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 8 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 405 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [SAMZU LIMITED](https://appshunter.io/developer/1820834040) | [Masafumi Ota](https://appshunter.io/developer/1720613631) |

## What reviewers say

### Category Topic

[App page](https://appshunter.io/ios/app/category-topic-mahjong-sort/id6794221849)

Engage in a cozy tile-sorting puzzle game where you match cute mahjong-style tiles to their correct categories. Explore diverse topics and categories, solve increasingly challenging puzzles, and train your brain with hundreds of levels.

**Highlights:** Mahjong-inspired tile sorting gameplay, Diverse topics and categories, Hundreds of brain-training levels, Cute, colorful tile designs, Helpful boosters, Satisfying animations

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack 1 | $1.99 | one-time |
| Revive | $4.99 | one-time |
| No Ads Package 1 | $7.99 | one-time |
| Coin Pack 2 | $7.99 | one-time |
| No Ads Package 2 | $9.99 | one-time |
| No Ads Bundle | $14.99 | one-time |
| Coin Pack 3 | $14.99 | one-time |
| Mega Bundle | $19.99 | one-time |
| Coin Pack 5 | $54.99 | one-time |
| Coin Pack 6 | $99.99 | one-time |


### Speed Card Duel

[App page](https://appshunter.io/ios/app/speed-card-duel/id6810015604)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Category Topic free?

Category Topic is free to download, with in-app purchases available.

### Is Speed Card Duel free?

Speed Card Duel is free to download, with in-app purchases available.

### Do Category Topic or Speed Card Duel have ads?

Both Category Topic and Speed Card Duel show ads.

### Which is updated more often, Category Topic or Speed Card Duel?

Category Topic ships an update every 8 days, and Speed Card Duel daily. Most recently, Category Topic was updated on November 10, 2026 and Speed Card Duel on November 10, 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.*