# RailMobile (BS) vs ACOS4YOU

The clearest difference is iOS requirement: ACOS4YOU at 12.0 against RailMobile (BS)'s 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

RailMobile (BS) ships an update every 9 months, ACOS4YOU every 13 months. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | RailMobile (BS) | ACOS4YOU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 13 months |
| Size | 66 MB | 29 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Binary System s.r.l.](https://appshunter.io/developer/563464510) | [Acos Energia SPA](https://appshunter.io/developer/1725509485) |

## What reviewers say

### RailMobile (BS)

[App page](https://appshunter.io/ios/app/railmobile-bs/id6448062159)

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

**In-app purchases:** none


### ACOS4YOU

[App page](https://appshunter.io/ios/app/acos4you/id6475982359)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RailMobile (BS) free?

RailMobile (BS) is free to download, with no in-app purchases.

### Is ACOS4YOU free?

ACOS4YOU is free to download, with no in-app purchases.

### Do RailMobile (BS) or ACOS4YOU have ads?

Neither RailMobile (BS) nor ACOS4YOU shows ads.

### Which is updated more often, RailMobile (BS) or ACOS4YOU?

RailMobile (BS) ships an update every 9 months, and ACOS4YOU every 13 months. Most recently, RailMobile (BS) was updated on September 21, 2026 and ACOS4YOU on September 12, 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.*