Comparison

CrewAlert vs Review Explorer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CrewAlert

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
Read full description

CrewAlert is the leading mobile app for fatigue risk management for airline safety professionals, crew scheduling departments and airline crew. CrewAlert assists fulfilling vital parts of the ICAO requirements on a FRMS: - Predictive: Help crew and crew schedulers compare and identify upcoming fatiguing flight duties. - Proactive. Assists safety departments to efficiently collect fatigue data from your operation – so called fatigue surveys. - Reactive. Greatly simplifies fatigue reporting for crew but also for safety departments. - Risk reduction: Built-in context sensitive fatigue mitigation functionality for crew. CrewAlert contains a lot of functionality, but please note that some parts are unlocked only conditioned a paid-for subscription. Such functionality is marked with an asterisk (*) below. --- As part of a joint safety initiative, Boeing and Jeppesen have been developing tools for allowing better management of alertness and fatigue. CrewAlert is the first app designed specifically to help airlines and their crews manage alertness and fatigue. Built on the Boeing Alertness Model (BAM), a mathematical prediction model of alertness, the CrewAlert app puts scientific knowledge in the palm of your hand. Please Note: This application is designed for professional pilots and the airlines that they work for. Before you purchase, please read this description in full as well as the Application License Agreement to see if CrewAlert is for you. For Everyone: - CrewAlert provides the functionality of much more expensive alertness modeling products at a fraction of the cost. - While CrewAlert is designed with flight deck and cabin crews in mind, it is applicable to any 24/7 operation where human performance is crucial to safety. For Crew: - Prediction of future alertness levels from schedule information, prior sleep and personal settings - creating risk awareness - Allows for creation of what-if scenarios - Allows for entry of sleep diaries of either actual or planned sleep, which can be used to investigate the effectiveness of potential sleep strategies. - Allows for collection of sleep (also via Apple Health*) and alertness data for own use, to learn over time what strategies work best. - Built-in fatigue mitigation strategies* - Efficient fatigue reporting* - Participate in fatigue data collection - Alerts and predictions also on Apple Watch* - Acclimatisation advice - Estimated body clock time* For Crew Schedulers: - Investigate likely effect on crew members from different scheduling options - Investigate common causes of recurring problems in schedules, and to consider alternatives - Simple import of roster data and sharing of scenarios* For Airline Safety Officers: - Efficient modelling of fatigue reports, incidents and accidents in multiple scenarios* - Analysis mode for investigating fatigue causes* - Analysis of collected fatigue data via efficient import* - Import and share data also via iCloud Drive* - Detailed fatigue reports, received from CrewAlert, can be imported and are pre-modelled using BAM, reducing manual work.* *) The paid for subscription-version of CrewAlert unlocks the following functionality; integration with Apple Health, use of iCould Drive, scenarios, fatigue mitigation strategies, roster import, analysis view, day/night theme, local light conditions and display of estimated body-clock time.

About

Review Explorer

Gain global market intelligence by aggregating and analyzing user reviews from over 175 storefronts. Utilize on-device AI for sentiment analysis, per-star insights, and AI-enhanced translation to uncover trends, identify weaknesses, and spot market gaps.

Highlights
  • Global review aggregation from 175+ storefronts
  • On-device AI sentiment analysis
  • Per-star rating insights
  • AI-enhanced translation
  • Targeted filtering by star rating
  • Persistent offline research
Features
Read full description

Review Explorer: Global Market Intelligence See what the world is saying. Review Explorer is a market intelligence app that gives you a direct window into global user sentiment. By aggregating customer feedback from 175+ storefronts into a single view, you can audit reviews across every App Store region to identify trends, spot weaknesses, and uncover market gaps in seconds. Analyze Trends with AI Insights Don't get buried in thousands of reviews. On iOS 26, on-device Apple Intelligence analyzes feedback to generate instant Sentiment Analysis reports. Get a high-level summary across all reviews, then drill into any star rating for targeted insights to see exactly why users leave 1-star complaints or 5-star praise. Break the Language Barrier Understand international feedback without installing language packs. Review Explorer uses on-device translation to detect and convert reviews into your language with a single tap. When standard translation models aren't available, an AI-Enhanced fallback powered by Apple Intelligence steps in to give you more translations on more language pairs than ever before. Look for the AI-Enhanced badge to see when on-device intelligence is working for you. Key Features: - Sentiment Analysis (iOS 26): On-device AI summaries provide a snapshot of user sentiment, globally and per star rating. - Per-Star Insights (iOS 26): Filter by star rating and get targeted analysis of what drives each rating level. - AI-Enhanced Translation (iOS 26): Automatic review translation with an intelligent fallback that extends coverage beyond standard language packs. - 175+ Global Storefronts: Seamlessly jump between regions to track international feedback. - Targeted Filtering: Isolate specific types of user feedback by star rating to surface technical complaints, feature requests, or praise. - Persistent Research: Recent search data is saved locally so you can continue your research offline. Who Is This For? - Product Managers: Audit market fit across regions. Identify which countries have the most vocal demand to inform localization and use per-star insights to refine your roadmap to address real user frustrations. - Marketing Teams: Understand how customers talk about competing products in their own words. Identify messaging angles grounded in real sentiment. - Competitive Intelligence Analysts: Deconstruct any app’s strengths and weaknesses globally. Spot emerging technical issues or market gaps in competing products so you can fill them first. - App Publishers: Monitor your global reputation in a single view. Leverage on-device AI to spot emerging trends before they impact your rating and prioritize fixes by region. Transform raw feedback into your next strategic move. Download Review Explorer today. Privacy Policy: https://matthewclower.com/review-explorer/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CrewAlert4 screens
Review Explorer4 screens

Verdict

The call

The clearest difference is price: CrewAlert at Free against Review Explorer's $0.99. CrewAlert also leads on device support (4 vs 2) and iOS requirement (15.6 vs 17.0). Review Explorer's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 2). On ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

CrewAlert is free to download; Review Explorer costs $0.99 up front. CrewAlert sells 2 in-app purchases, starting at $1.99 per month. Review Explorer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Review Explorer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

CrewAlert ships an update every 2 months, Review Explorer every 3 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 3 level
CrewAlert versus Review Explorer: the parameters behind the verdict, then further details
ParameterCrewAlertReview Explorer
PriceFree — better$0.99
Rating4.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews25.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size34 MB3 MB
Age rating4+4+
DeveloperJeppesen Systems ABMatthew James Clower

Customer experience

CrewAlert

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive25.0%
Neutral33.3%
Negative41.7%

Review Explorer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

CrewAlert

Subscriptions2
  • CrewAlert (1 Month)$1.991 Month
  • CrewAlert Yearly (12 months)$19.991 Year
None

Review Explorer

No in-app purchases

Questions

Is CrewAlert free?
CrewAlert is free to download, with in-app purchases available.
Is Review Explorer free?
Review Explorer costs $0.99, with no in-app purchases.
Which has better reviews, CrewAlert or Review Explorer?
Review Explorer is rated higher. CrewAlert averages 4.0 out of 5 from 2 ratings, while Review Explorer averages 5.0 from 1 ratings.
Do CrewAlert or Review Explorer have ads?
Neither CrewAlert nor Review Explorer shows ads.
Which is updated more often, CrewAlert or Review Explorer?
CrewAlert ships an update every 2 months, and Review Explorer every 3 days. Most recently, CrewAlert was updated on November 1, 2026 and Review Explorer on October 31, 2026.

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