737 Handbook vs 737 Master Caution
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
737 Handbook
An interactive technical guide for pilots, offering quick reference for sim or interview preparation. Features interactive schematics, photos, videos, and a flight deck mock-up. Content is organized for flexible learning, from essential information to in-depth system exploration.
- Interactive schematics
- Videos of malfunctions and systems
- FMC simulator with CPDLC/ACARS
- 737 Flight Deck Mock-up
- Photo galleries
- Offline content access
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The 737 Handbook is an interactive technical guide for pilots which provides a quick reference for sim or interview preparation from initial type rating to command upgrade. The app features interactive schematics, photos and videos with unique content. The information is sorted in different levels from most essential information on the page to in-depth information in pop-up windows. This enables you to choose the way you want to learn. Should you require quick reference you can go through the main text in the chapter. Should you, however, wish to explore the systems more in-depth you can do so by opening different pop-up windows, text and playing around with fully interactive schematics. Try it out yourself! Main features: * 226 pages divided into 18 chapters * Over 20 videos of different engine malfunctions and various systems operation * FMC simulator with CPDLC and ACARS * Fully Interactive schematics including Electrical, Fuel, Air Systems and many more * 737 Flight Deck Mock-up * Photo galleries * News section with technical blog posts * All of the content is available offline when online the app checks for content updates Note: The 737 Handbook comes with one chapter and one interactive schematic for free. The rest of the content is available as one time in-app purchase. ——————————————————————————— Terms & Conditions In-App Purchases * The 737 Handbook application offers an “in-app” purchase option which will unlock features listed on the “Unlock Premium Access” page * The “in-app” purchase is valid only on the ecosystem where the “in-app” purchase was made (no cross-platform support) * The “in-app” purchase will unlock premium access on all devices within the ecosystem, provided that the devices are signed in under the same ID * All amounts are payable and charged: * (i) for career pass (lifetime subscription) at the time you place your order * (ii) for type rating pass (6 monthly subscription), at the beginning of the subscription and, because each such subscription renews automatically for an additional period equal in length to the expiring subscription term until you cancel it, at the time of each renewal until you cancel. * You must cancel your subscription before it renews to avoid the billing of the fees for the next subscription period * Your subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. * Your account will be charged for renewal within 24-hours prior to the end of the current subscription period. Automatic renewals will cost the same price you were originally charged for the subscription * You can manage your subscriptions and turn off auto-renewal by going to your Account Settings on the App Store after purchase. * You can cancel the renewal of your subscription with the App Store * You will not receive a refund for the fees you already paid for your current subscription period, and you will continue to use premium access until the end of your current subscription period * App Store subscriptions can be managed from a mobile device or computer that is signed in using the same Apple ID as the initial purchase. The 737 Publishing s.r.o. cannot manage App Store subscriptions. * By purchasing the “premium access” you accept these terms & conditions Full Terms and Conditions: https://737-handbook.s3.us-east-1.amazonaws.com/Terms+and+Conditions.pdf Privacy Policy: https://737-handbook.s3.us-east-1.amazonaws.com/Privacy+Policy.pdf
737 Master Caution
This app provides a comprehensive reference for over 200 warning lights and messages across B737 Classic, NG, and MAX aircraft families. It includes tools for abbreviations, FMC messages, circuit breakers, and electrical buses, aiding pilot training and aviation enthusiasts.
- References over 200 B737 warning lights and messages
- Filter by aircraft family (Classic, NG, MAX)
- Full text search for specific lights
- Personal notes and bookmarking
- Reference tools for abbreviations, FMC messages, circuit breakers, and electrical buses
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This app references more than 200 warning lights and messages of the B737 Classic, NG and MAX families. You are a pilot preparing your initial 737 type rating training, or an aviation enthusiast, or a flight simulator fan. You should enjoy this app. - Warning lights are grouped by FCOM chapters. - You may filter warning lights by airplane family / generation (Classic, NG or MAX). - Full text search to find a specific light. - Add your personal notes for each light and use the app as a notebook. - Place a bookmark to specific warning lights. You will also find 4 other tools, as reference : - A complete list of abbreviations with more than 400 definitions. - Full explanation of more than 100 FMC messages. - Position of more than 500 circuit breakers, sorted by ATA codes or by panels. - List of all electrical buses and more than 500 associated services. A great tool during your initial type rating training or during a refresher later. For training purposes ONLY. Do not use in-flight. Should you spot any error or have any suggestion, feel free to contact : support@babdreams.com Enjoy.
Screenshots
Verdict
The clearest difference is in-app purchases: 737 Master Caution at none against 737 Handbook's 2. 737 Master Caution also leads on iOS requirement (13.0 vs 16.4). 737 Handbook's advantage is rating (4.9 vs 4.4) and update cadence (every 3 weeks vs every 3 months). On price, ads and device support 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
Both are free to download. 737 Handbook sells 2 in-app purchases, starting at $16.99 per 6 months. 737 Master Caution asks for nothing beyond the download.
737 Handbook holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: 737 Handbook has 247 ratings behind it against 7, so its average is the more settled of the two.
737 Handbook ships an update every 3 weeks, 737 Master Caution every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | 737 Handbook | 737 Master Caution |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (247 ratings) — better | 4.4 (7 ratings) |
| Positive reviews | 87.4% of reviews | — |
| Number of ratings | 247 — better | 7 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 51 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 737 PUBLISHING S.R.O. | Studio BabDreams |
Customer experience
737 Handbook
737 Master Caution
Bugs and requests
737 Handbook
Reported bugs
7 issues- App doesn't work offline
- Stuck at loading percentages (e.g., 56%, 57%)
- Premium content not available after purchase
- App fails to start after updates
- App not working on iOS 12.5.5
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- App crashes often
- Interactive components are very sensitive to touch
Requested features
6 requests- Make app available offline
- Improve interactive component intuitiveness
- Develop app for other aircraft models (e.g., 777)
- Add feature to highlight words and make in-app notes
- Consider sales/discounts on the app
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- Develop an app for maintenance engineers
737 Master Caution
Not enough reviews yet to summarise bugs or requests.
In-app purchases
737 Handbook
- Type Rating Pass (6-monthly)$16.996 Months
- Career Pass (Lifetime)$54.99
737 Master Caution
No in-app purchases
Questions
Is 737 Handbook free?
Is 737 Master Caution free?
Which has better reviews, 737 Handbook or 737 Master Caution?
Do 737 Handbook or 737 Master Caution have ads?
Which is updated more often, 737 Handbook or 737 Master Caution?
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