# Complicated problem solving vs WordHub

The clearest difference is update cadence: WordHub at every 3 days against Complicated problem solving's every 9 days. Complicated problem solving's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Complicated problem solving ships an update every 9 days, WordHub every 3 days. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Complicated problem solving | WordHub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wordhub/id6812649164/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | — | Free |
| Size | 48 MB | 9 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Man Hung Sun](https://appshunter.io/developer/1471605573) | [北京花花草草科技有限公司](https://appshunter.io/developer/1095274671) |

## What reviewers say

### Complicated problem solving

[App page](https://appshunter.io/ios/app/complicated-problem-solving/id1526663206)

**Features:** macOS Compatibility

**In-app purchases:** none


### WordHub

[App page](https://appshunter.io/ios/app/wordhub/id6812649164)

An offline dictionary and vocabulary learning tool for English learners. Import your own MDict dictionaries to quickly look up words, read entries, and listen to pronunciations without an internet connection. Explore word origins and relationships, and use features like collections, study plans, and reviews to retain new vocabulary.

**Highlights:** Offline MDict dictionary import and search, Read entries and listen to pronunciations, Explore word etymology and relationships, Collect words, create study plans, and review, Supports iPhone and iPad

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

**In-app purchases:** none


## Frequently asked questions

### Is Complicated problem solving free?

Complicated problem solving is free to download, with no in-app purchases.

### Is WordHub free?

WordHub is free to download, with no in-app purchases.

### Do Complicated problem solving or WordHub have ads?

Neither Complicated problem solving nor WordHub shows ads.

### Which is updated more often, Complicated problem solving or WordHub?

Complicated problem solving ships an update every 9 days, and WordHub every 3 days. Most recently, Complicated problem solving was updated on October 6, 2026 and WordHub on October 11, 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.*