# Solitaire Fish World vs Category Topic

Solitaire Fish World and Category Topic are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Solitaire Fish World sells 10 one-off in-app purchases and Category Topic sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Solitaire Fish World ships an update weekly, Category Topic fortnightly. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Solitaire Fish World | Category Topic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (122 ratings)](https://appshunter.io/ios/app/category-topic-mahjong-sort/id6794221849/reviews)** |
| Number of ratings | — | **122** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 290 MB | 367 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [MFT Entertainment Limited](https://appshunter.io/developer/1841872171) | [SAMZU LIMITED](https://appshunter.io/developer/1820834040) |

## What reviewers say

### Solitaire Fish World

[App page](https://appshunter.io/ios/app/solitaire-fish-world/id6793841036)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| packscoin1 | $0.99 | one-time |
| packscoin2 | $2.99 | one-time |
| packscoin3 | $4.99 | one-time |
| packscoin4 | $9.99 | one-time |
| normalcoin3 | $12.99 | one-time |
| packscoin5 | $19.99 | one-time |
| normalcoin4 | $24.99 | one-time |
| packscoin6 | $39.99 | one-time |
| normalcoin5 | $49.99 | one-time |
| packscoin7 | $79.99 | one-time |


### Category Topic

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

Engage in a relaxing tile-sorting puzzle game inspired by mahjong. Match cute tiles to their correct categories across a vast array of topics. Progress through challenging levels that test your planning and observation skills.

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

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

**In-app purchases (13)**

| 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 |
| Mini Bundle | $9.99 | one-time |
| No Ads Bundle | $14.99 | one-time |
| Coin Pack 3 | $14.99 | one-time |
| Mega Bundle | $19.99 | one-time |
| Ultra Bundle | $29.99 | one-time |
| Coin Pack 4 | $29.99 | one-time |
| Coin Pack 5 | $54.99 | one-time |
| Coin Pack 6 | $99.99 | one-time |


## Frequently asked questions

### Is Solitaire Fish World free?

Solitaire Fish World is free to download, with in-app purchases available.

### Is Category Topic free?

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

### Do Solitaire Fish World or Category Topic have ads?

Both Solitaire Fish World and Category Topic show ads.

### Which is updated more often, Solitaire Fish World or Category Topic?

Solitaire Fish World ships an update weekly, and Category Topic fortnightly. Most recently, Solitaire Fish World was updated on October 4, 2026 and Category Topic on October 16, 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.*