# PassFinder vs Sentence Builder Master Pro

The clearest difference is rating: Sentence Builder Master Pro at 4.6 against PassFinder's 3.1. Sentence Builder Master Pro also leads on iOS requirement (15.6 vs 18.0). PassFinder's advantage is monetization model (free vs paid). On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

Sentence Builder Master Pro holds the better App Store score, 4.6 against 3.1. Both are backed by a comparable volume of ratings — 30 and 49 respectively. Written reviews complicate that: 39% of PassFinder's written reviews are positive against 33% of Sentence Builder Master Pro's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PassFinder | Sentence Builder Master Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (30 ratings)](https://appshunter.io/ios/app/passfinder/id721125800/reviews) | **[4.6 (49 ratings)](https://appshunter.io/ios/app/sentence-builder-master-pro/id1236551331/reviews)** |
| Number of ratings | 30 | **49** |
| Positive reviews | **39.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 5 MB | 46 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Hansen](https://appshunter.io/developer/721033532) | [Imanol Fernandez Gorostizaga](https://appshunter.io/developer/313095639) |

## What reviewers say

### PassFinder

[App page](https://appshunter.io/ios/app/passfinder/id721125800)

Track the International Space Station's visible passes over your location. Receive precise timing information to observe the ISS with the naked eye.

**Highlights:** ISS pass tracking, Visible pass notifications, Naked-eye observation guidance, Location-based timing

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentence Builder Master Pro

[App page](https://appshunter.io/ios/app/sentence-builder-master-pro/id1236551331)

Learn English grammar and vocabulary by unscrambling words to form correct sentences. This educational game offers multiple difficulty levels and a fun way to improve language skills for learners of all ages. Compete with others or play solo to master sentence structure and idioms.

**Highlights:** Word unscrambling for sentence formation, Multiple difficulty levels (Beginner to Expert), Proverbs and Sayings level for idioms, Online multiplayer mode, Game Center integration, Time penalties for incorrect order

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

**In-app purchases:** none


## Frequently asked questions

### Is PassFinder free?

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

### Is Sentence Builder Master Pro free?

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

### Which has better reviews, PassFinder or Sentence Builder Master Pro?

Sentence Builder Master Pro is rated higher. PassFinder averages 3.1 out of 5 from 30 ratings, while Sentence Builder Master Pro averages 4.6 from 49 ratings.

### Do PassFinder or Sentence Builder Master Pro have ads?

Neither PassFinder nor Sentence Builder Master Pro shows ads.

### Which is updated more often, PassFinder or Sentence Builder Master Pro?

PassFinder ships an update every 3 months, and Sentence Builder Master Pro every 3 months. Most recently, PassFinder was updated on October 20, 2026 and Sentence Builder Master Pro on October 24, 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.*