# B&G System Builder vs S4Y crew app

The clearest difference is ads: B&G System Builder at none against S4Y crew app's shown. B&G System Builder also leads on iOS requirement (9.0 vs 16.6). S4Y crew app's advantage is update cadence (fortnightly vs every 3 months). On price, 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.

B&G System Builder ships an update every 3 months, S4Y crew app fortnightly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | B&G System Builder | S4Y crew app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/b-and-g-system-builder/id1026543356/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 113 MB | 49 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Navico Norway AS](https://appshunter.io/developer/842162153) | [Miroslav Horvat](https://appshunter.io/developer/1542441834) |

## What reviewers say

### B&G System Builder

[App page](https://appshunter.io/ios/app/b-and-g-system-builder/id1026543356)

This business tool helps marine electronics companies create sales quotes and system diagrams for B&G equipment. It ensures correct parts are included for a working system, saving sales staff significant time.

**Highlights:** Generate sales quotes with system diagrams, Ensure correct parts for working systems, Create ethernet and NMEA 2000 connection drawings, Alerts for missing critical parts, Warnings for extra functionality, Access product information, specs, and pricing

**Features:** macOS Compatibility

**In-app purchases:** none


### S4Y crew app

[App page](https://appshunter.io/ios/app/s4y-crew-app/id6473546239)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is B&G System Builder free?

B&G System Builder is free to download, with no in-app purchases.

### Is S4Y crew app free?

S4Y crew app is free to download, with no in-app purchases.

### Do B&G System Builder or S4Y crew app have ads?

S4Y crew app shows ads; B&G System Builder does not.

### Which is updated more often, B&G System Builder or S4Y crew app?

B&G System Builder ships an update every 3 months, and S4Y crew app fortnightly. Most recently, B&G System Builder was updated on November 1, 2026 and S4Y crew app on November 4, 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.*