# Preposition Builder Master Pro vs Happy by Harmon Hall

The clearest difference is monetization model: Happy by Harmon Hall at free against Preposition Builder Master Pro's paid. Happy by Harmon Hall also leads on iOS requirement (13.0 vs 15.6). On price, review sentiment, update cadence and ads there is nothing between them.

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

Preposition Builder Master Pro ships an update every 2 months, Happy by Harmon Hall every 3 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Preposition Builder Master Pro | Happy by Harmon Hall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (19 ratings)](https://appshunter.io/ios/app/preposition-builder-master-pro/id1236551326/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 45 MB | 27 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Imanol Fernandez Gorostizaga](https://appshunter.io/developer/313095639) | [Talisis](https://appshunter.io/developer/1648987582) |

## What reviewers say

### Preposition Builder Master Pro

[App page](https://appshunter.io/ios/app/preposition-builder-master-pro/id1236551326)

Learn English prepositions and grammar by correctly placing words to form sentences and common sayings. This game offers multiple difficulty levels, from beginner to expert, and includes a fun way to master idioms and expressions. Compete with others or practice solo to improve your language skills.

**Highlights:** Sentence building with prepositions, Multiple difficulty levels (Beginner to Expert), Proverbs and Sayings level, Time penalties for errors, Scoring based on speed and accuracy, Online multiplayer mode, Game Center integration

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

**In-app purchases:** none


### Happy by Harmon Hall

[App page](https://appshunter.io/ios/app/happy-by-harmon-hall/id1454299392)

This educational app offers interactive vocabulary, pronunciation practice, and offline functionality based on a renowned language learning methodology. It provides exclusive access for students enrolled in specific programs, ensuring a tailored learning experience.

**Highlights:** Interactive image gallery, Vocabulary and pronunciation practice, Offline functionality, Notifications, Harmon Hall methodology

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Preposition Builder Master Pro free?

Preposition Builder Master Pro is free to download, with no in-app purchases.

### Is Happy by Harmon Hall free?

Happy by Harmon Hall is free to download, with no in-app purchases.

### Do Preposition Builder Master Pro or Happy by Harmon Hall have ads?

Neither Preposition Builder Master Pro nor Happy by Harmon Hall shows ads.

### Which is updated more often, Preposition Builder Master Pro or Happy by Harmon Hall?

Preposition Builder Master Pro ships an update every 2 months, and Happy by Harmon Hall every 3 months. Most recently, Preposition Builder Master Pro was updated on November 2, 2026 and Happy by Harmon Hall on November 2, 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.*