# Trans4motor S vs SQL

The clearest difference is review sentiment: Trans4motor S at 50% against SQL's 0%. Trans4motor S also leads on rating (4.6 vs 1.0) and update cadence (weekly vs every 5 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Trans4motor S costs $5.99 and SQL $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trans4motor S holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Trans4motor S has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Trans4motor S's written reviews are positive against 0% of SQL's.

Trans4motor S ships an update weekly, SQL every 5 weeks. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Trans4motor S | SQL |
| --- | --- | --- |
| Price | $5.99 | $5.99 |
| Rating | **[4.6 (19 ratings)](https://appshunter.io/ios/app/trans4motor-s/id1561448237/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/sql-er-diagram-pro/id1625278308/reviews) |
| Number of ratings | **19** | 1 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Paid | Paid |
| Size | 127 MB | 31 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kitt Peak, Inc.](https://appshunter.io/developer/399507326) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### Trans4motor S

[App page](https://appshunter.io/ios/app/trans4motor-s/id1561448237)

Explore the inner workings of various four-stroke aircraft engines through detailed CG animations. Experience realistic engine sounds, throttle control, and interactive modes like cutaway views and engine start-up simulations. Learn about engine mechanics and history.

**Highlights:** Transform between engine types, Realistic engine sound and throttle control, Cutaway view of engine internals, Virtual engine start-up procedure, Interactive movie presentations, Machine gun firing simulation

**Features:** macOS Compatibility

**In-app purchases:** none


### SQL

[App page](https://appshunter.io/ios/app/sql-er-diagram-pro/id1625278308)

Design, draw, and share entity relationship diagrams with this app. Generate SQL scripts from your diagrams and access study pages for SQL topics and syntax. Perfect for learning SQL graphically and textually.

**Highlights:** Design and draw ER diagrams, Generate SQL scripts from diagrams, Customizable canvas size, Automatic local saving, Study pages for SQL topics, Learn SQL syntax pages

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

**In-app purchases:** none


## Frequently asked questions

### Is Trans4motor S free?

Trans4motor S costs $5.99, with no in-app purchases.

### Is SQL free?

SQL costs $5.99, with no in-app purchases.

### Which has better reviews, Trans4motor S or SQL?

Trans4motor S is rated higher. Trans4motor S averages 4.6 out of 5 from 19 ratings, while SQL averages 1.0 from 1 ratings.

### Do Trans4motor S or SQL have ads?

Neither Trans4motor S nor SQL shows ads.

### Which is updated more often, Trans4motor S or SQL?

Trans4motor S ships an update weekly, and SQL every 5 weeks. Most recently, Trans4motor S was updated on October 17, 2026 and SQL 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.*