# CrewAlert vs Atlas Winds

The clearest difference is review sentiment: Atlas Winds at 100% against CrewAlert's 25%. Atlas Winds also leads on rating (4.7 vs 4.0) and update cadence (weekly vs every 2 months). CrewAlert's advantage is device support (4 vs 2) and iOS requirement (15.6 vs 17.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. CrewAlert sells 2 in-app purchases, starting at $1.99 per month and Atlas Winds sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Atlas Winds holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Atlas Winds has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 25% of CrewAlert's written reviews are positive against 100% of Atlas Winds's.

CrewAlert ships an update every 2 months, Atlas Winds weekly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CrewAlert | Atlas Winds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/crewalert/id391351389/reviews) | **[4.7 (21 ratings)](https://appshunter.io/ios/app/atlas-winds/id1540515755/reviews)** |
| Number of ratings | 2 | **21** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 14 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeppesen Systems AB](https://appshunter.io/developer/391351392) | [Scott Brenner](https://appshunter.io/developer/1458439440) |

## What reviewers say

### CrewAlert

[App page](https://appshunter.io/ios/app/crewalert/id391351389)

This app helps airline professionals and crew manage fatigue risk by predicting and analyzing alertness levels. It offers tools for proactive and reactive fatigue reporting, risk reduction, and data collection, built on a scientific alertness model.

**Highlights:** Predictive fatigue analysis, Proactive fatigue data collection, Simplified fatigue reporting, Context-sensitive fatigue mitigation, Alertness prediction model, Sleep diary and data collection, What-if scenario planning

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CrewAlert (1 Month) | $1.99 | per month |
| CrewAlert Yearly (12 months) | $19.99 | per year |


### Atlas Winds

[App page](https://appshunter.io/ios/app/atlas-winds/id1540515755)

Calculate approach wind additives for specific Boeing aircraft models. Input runway winds in knots or meters per second to get your wind additive in knots.

**Highlights:** Calculate approach wind additives, Supports 737, 747, 767, 777 fleets, Input winds in knots or m/s, Output wind additive in knots

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $9.99 | per year |


## Frequently asked questions

### Is CrewAlert free?

CrewAlert is free to download, with in-app purchases available.

### Is Atlas Winds free?

Atlas Winds is free to download, with in-app purchases available.

### Which has better reviews, CrewAlert or Atlas Winds?

Atlas Winds is rated higher. CrewAlert averages 4.0 out of 5 from 2 ratings, while Atlas Winds averages 4.7 from 21 ratings.

### Do CrewAlert or Atlas Winds have ads?

Neither CrewAlert nor Atlas Winds shows ads.

### Which is updated more often, CrewAlert or Atlas Winds?

CrewAlert ships an update every 2 months, and Atlas Winds weekly. Most recently, CrewAlert was updated on October 27, 2026 and Atlas Winds 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.*