# FlyAcross vs E100/SOSMex

The clearest difference is rating: E100/SOSMex at 5.0 against FlyAcross's 3.8. On price, ratings volume, 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.

E100/SOSMex holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

FlyAcross ships an update every 3 months, E100/SOSMex every 2 months. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | FlyAcross | E100/SOSMex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/flyacross/id1205736533/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/e100sosmex/id1571087906/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 36 MB | 83 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Servicios Aereos Across S.A de C.V.](https://appshunter.io/developer/1279340185) | [Kizara Labs, S.A.S. de C.V.](https://appshunter.io/developer/1518530698) |

## What reviewers say

### FlyAcross

[App page](https://appshunter.io/ios/app/flyacross/id1205736533)

Book flights and discover ferry and charter options conveniently and quickly. Receive notifications for your favorite destinations and enjoy a unique travel experience.

**Highlights:** Flight booking, Ferry flight options, Charter flight requests, Flight notifications, Convenient and fast booking

**Features:** macOS Compatibility

**In-app purchases:** none


### E100/SOSMex

[App page](https://appshunter.io/ios/app/e100sosmex/id1571087906)

This app provides an emergency alert button for immediate assistance from the security office when you are in danger. It ensures a swift response to critical situations.

**Highlights:** Emergency alert button, Immediate security response, Supports iPhone and Apple Watch, Free to download

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FlyAcross free?

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

### Is E100/SOSMex free?

E100/SOSMex is free to download, with no in-app purchases.

### Which has better reviews, FlyAcross or E100/SOSMex?

E100/SOSMex is rated higher. FlyAcross averages 3.8 out of 5 from 4 ratings, while E100/SOSMex averages 5.0 from 4 ratings.

### Do FlyAcross or E100/SOSMex have ads?

Neither FlyAcross nor E100/SOSMex shows ads.

### Which is updated more often, FlyAcross or E100/SOSMex?

FlyAcross ships an update every 3 months, and E100/SOSMex every 2 months. Most recently, FlyAcross was updated on September 26, 2026 and E100/SOSMex on October 1, 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.*