# AlertMeter vs Aviation Fatigue Meter

The clearest difference is rating: AlertMeter at 4.4 against Aviation Fatigue Meter's 3.0. AlertMeter also leads on ratings volume (15 vs 2). Aviation Fatigue Meter's advantage is update cadence (weekly vs monthly) and iOS requirement (10.0 vs 16.4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AlertMeter holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: AlertMeter has 15 ratings behind it against 2, so its average is the more settled of the two.

AlertMeter ships an update monthly, Aviation Fatigue Meter weekly. The most recent releases landed on September 8, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | AlertMeter | Aviation Fatigue Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/alertmeter/id1179939295/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/aviation-fatigue-meter/id1209482285/reviews) |
| Number of ratings | **15** | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | Free |
| Size | 25 MB | 107 MB |
| Requires iOS | 16.4 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Predictive Safety SRP, Inc.](https://appshunter.io/developer/1179939294) | [Pulsar Informatics](https://appshunter.io/developer/1154761432) |

## What reviewers say

### AlertMeter

[App page](https://appshunter.io/ios/app/alertmeter/id1179939295)

This app helps identify when fatigue, illness, medication, or distraction may impact cognitive function. It allows individuals to regularly test their alertness levels, providing companies with a daily overview of employees in critical roles. The app is designed to respect employee privacy while assessing fitness for work.

**Highlights:** Personalized alertness testing, Company-wide daily overview, Privacy-respecting employee monitoring, Identifies impact of fatigue/illness, Assesses fitness for safety-critical roles

**Features:** Vision Pro support

**In-app purchases:** none


### Aviation Fatigue Meter

[App page](https://appshunter.io/ios/app/aviation-fatigue-meter/id1209482285)

This app allows aviation professionals to assess their fatigue levels during flight operations using validated alertness tests and customized surveys. Data is automatically synchronized securely for fatigue risk management.

**Highlights:** Psychomotor Vigilance Test (PVT), Customized surveys, Fatigue assessment tests, Automatic data synchronization, Secure data transfer, Robotically calibrated assessments

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AlertMeter free?

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

### Is Aviation Fatigue Meter free?

Aviation Fatigue Meter is free to download, with no in-app purchases.

### Which has better reviews, AlertMeter or Aviation Fatigue Meter?

AlertMeter is rated higher. AlertMeter averages 4.4 out of 5 from 15 ratings, while Aviation Fatigue Meter averages 3.0 from 2 ratings.

### Do AlertMeter or Aviation Fatigue Meter have ads?

Neither AlertMeter nor Aviation Fatigue Meter shows ads.

### Which is updated more often, AlertMeter or Aviation Fatigue Meter?

AlertMeter ships an update monthly, and Aviation Fatigue Meter weekly. Most recently, AlertMeter was updated on September 8, 2026 and Aviation Fatigue Meter on June 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.*